1 /* 2 * Copyright (c) 1998, 2015, Oracle and/or its affiliates. All rights reserved. 3 * Copyright 2012, 2013 SAP AG. 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_VM_UTILITIES_GLOBALDEFINITIONS_XLC_HPP 27 #define SHARE_VM_UTILITIES_GLOBALDEFINITIONS_XLC_HPP 28 29 #include "prims/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 #ifndef FP_PZERO 45 // Linux doesn't have positive/negative zero 46 #define FP_PZERO FP_ZERO 47 #endif 48 #if (!defined fpclass) 49 #define fpclass fpclassify 50 #endif 51 52 #include <time.h> 53 #include <fcntl.h> 54 #include <dlfcn.h> 55 #include <pthread.h> 56 57 #include <limits.h> 58 #include <errno.h> 59 60 #include <stdint.h> 61 62 // Use XLC compiler builtins instead of inline assembler 63 #define USE_XLC_BUILTINS 64 #ifdef USE_XLC_BUILTINS 65 #include <builtins.h> 66 #if __IBMCPP__ < 1000 67 // the funtion prototype for __dcbtst(void *) is missing in XLC V8.0 68 // I could compile a little test, where I provided the prototype. 69 // The generated code was correct there. This is the prototype: 70 // extern "builtin" void __dcbtst (void *); 71 // For now we don't make use of it when compiling with XLC V8.0 72 #else 73 // __IBMCPP__ >= 1000 74 // XLC V10 provides the prototype for __dcbtst (void *); 75 #define USE_XLC_PREFETCH_WRITE_BUILTIN 76 #endif 77 #endif // USE_XLC_BUILTINS 78 79 // NULL vs NULL_WORD: 80 // On Linux NULL is defined as a special type '__null'. Assigning __null to 81 // integer variable will cause gcc warning. Use NULL_WORD in places where a 82 // pointer is stored as integer value. On some platforms, sizeof(intptr_t) > 83 // sizeof(void*), so here we want something which is integer type, but has the 84 // same size as a pointer. 85 #ifdef __GNUC__ 86 #error XLC and __GNUC__? 87 #else 88 #define NULL_WORD NULL 89 #endif 90 91 // AIX also needs a 64 bit NULL to work as a null address pointer. 92 // Most system includes on AIX would define it as an int 0 if not already defined with one 93 // exception: /usr/include/dirent.h will unconditionally redefine NULL to int 0 again. 94 // In this case you need to copy the following defines to a position after #include <dirent.h> 95 // (see jmv_aix.h). 96 #ifdef AIX 97 #ifdef _LP64 98 #undef NULL 99 #define NULL 0L 100 #else 101 #ifndef NULL 102 #define NULL 0 103 #endif 104 #endif 105 #endif // AIX 106 107 // Compiler-specific primitive types 108 // All defs of int (uint16_6 etc) are defined in AIX' /usr/include/stdint.h 109 110 // Additional Java basic types 111 112 typedef uint8_t jubyte; 113 typedef uint16_t jushort; 114 typedef uint32_t juint; 115 typedef uint64_t julong; 116 117 118 //---------------------------------------------------------------------------------------------------- 119 // Constant for jlong (specifying an long long canstant is C++ compiler specific) 120 121 // Build a 64bit integer constant 122 #define CONST64(x) (x ## LL) 123 #define UCONST64(x) (x ## ULL) 124 125 const jlong min_jlong = CONST64(0x8000000000000000); 126 const jlong max_jlong = CONST64(0x7fffffffffffffff); 127 128 //---------------------------------------------------------------------------------------------------- 129 // Debugging 130 131 #define DEBUG_EXCEPTION ::abort(); 132 133 extern "C" void breakpoint(); 134 #define BREAKPOINT ::breakpoint() 135 136 // checking for nanness 137 #ifdef AIX 138 inline int g_isnan(float f) { return isnan(f); } 139 inline int g_isnan(double f) { return isnan(f); } 140 #else 141 #error "missing platform-specific definition here" 142 #endif 143 144 // Checking for finiteness 145 146 inline int g_isfinite(jfloat f) { return finite(f); } 147 inline int g_isfinite(jdouble f) { return finite(f); } 148 149 150 // Wide characters 151 152 inline int wcslen(const jchar* x) { return wcslen((const wchar_t*)x); } 153 154 155 // Portability macros 156 #define PRAGMA_INTERFACE #pragma interface 157 #define PRAGMA_IMPLEMENTATION #pragma implementation 158 #define VALUE_OBJ_CLASS_SPEC 159 160 // Formatting. 161 #ifdef _LP64 162 #define FORMAT64_MODIFIER "l" 163 #else // !_LP64 164 #define FORMAT64_MODIFIER "ll" 165 #endif // _LP64 166 167 // Cannot use xlc's offsetof as implementation of hotspot's 168 // offset_of(), because xlc warns about applying offsetof() to non-POD 169 // object and xlc cannot compile the expression offsetof(DataLayout, 170 // _cells[index]) in DataLayout::cell_offset() . Therefore we define 171 // offset_of as it is defined for gcc. 172 #define offset_of(klass,field) (size_t)((intx)&(((klass*)16)->field) - 16) 173 174 // Some constant sizes used throughout the AIX port 175 #define SIZE_1K ((uint64_t) UCONST64( 0x400)) 176 #define SIZE_4K ((uint64_t) UCONST64( 0x1000)) 177 #define SIZE_64K ((uint64_t) UCONST64( 0x10000)) 178 #define SIZE_1M ((uint64_t) UCONST64( 0x100000)) 179 #define SIZE_4M ((uint64_t) UCONST64( 0x400000)) 180 #define SIZE_8M ((uint64_t) UCONST64( 0x800000)) 181 #define SIZE_16M ((uint64_t) UCONST64( 0x1000000)) 182 #define SIZE_256M ((uint64_t) UCONST64( 0x10000000)) 183 #define SIZE_1G ((uint64_t) UCONST64( 0x40000000)) 184 #define SIZE_2G ((uint64_t) UCONST64( 0x80000000)) 185 #define SIZE_4G ((uint64_t) UCONST64( 0x100000000)) 186 #define SIZE_16G ((uint64_t) UCONST64( 0x400000000)) 187 #define SIZE_32G ((uint64_t) UCONST64( 0x800000000)) 188 #define SIZE_64G ((uint64_t) UCONST64( 0x1000000000)) 189 #define SIZE_1T ((uint64_t) UCONST64(0x10000000000)) 190 191 192 #endif // SHARE_VM_UTILITIES_GLOBALDEFINITIONS_XLC_HPP