globalDefinitions_xlc.hpp revision 10049:73443d24e529 
1/*
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8 * published by the Free Software Foundation.
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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
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13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
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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#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// Use XLC compiler builtins instead of inline assembler
55#define USE_XLC_BUILTINS
56#ifdef USE_XLC_BUILTINS
57#include <builtins.h>
58  #if __IBMCPP__ < 1000
59  // the funtion prototype for __dcbtst(void *) is missing in XLC V8.0
60  // I could compile a little test, where I provided the prototype.
61  // The generated code was correct there. This is the prototype:
62  // extern "builtin" void __dcbtst (void *);
63  // For now we don't make use of it when compiling with XLC V8.0
64  #else
65  // __IBMCPP__ >= 1000
66  // XLC V10 provides the prototype for __dcbtst (void *);
67  #define USE_XLC_PREFETCH_WRITE_BUILTIN
68  #endif
69#endif // USE_XLC_BUILTINS
70
71// NULL vs NULL_WORD:
72// On Linux NULL is defined as a special type '__null'. Assigning __null to
73// integer variable will cause gcc warning. Use NULL_WORD in places where a
74// pointer is stored as integer value.  On some platforms, sizeof(intptr_t) >
75// sizeof(void*), so here we want something which is integer type, but has the
76// same size as a pointer.
77#ifdef __GNUC__
78  #error XLC and __GNUC__?
79#else
80  #define NULL_WORD  NULL
81#endif
82
83// AIX also needs a 64 bit NULL to work as a null address pointer.
84// Most system includes on AIX would define it as an int 0 if not already defined with one
85// exception: /usr/include/dirent.h will unconditionally redefine NULL to int 0 again.
86// In this case you need to copy the following defines to a position after #include <dirent.h>
87// (see jmv_aix.h).
88#ifdef AIX
89  #ifdef _LP64
90    #undef NULL
91    #define NULL 0L
92  #else
93    #ifndef NULL
94      #define NULL 0
95    #endif
96  #endif
97#endif // AIX
98
99// Compiler-specific primitive types
100// All defs of int (uint16_6 etc) are defined in AIX' /usr/include/stdint.h
101
102// Additional Java basic types
103
104typedef uint8_t  jubyte;
105typedef uint16_t jushort;
106typedef uint32_t juint;
107typedef uint64_t julong;
108
109
110//----------------------------------------------------------------------------------------------------
111// Constant for jlong (specifying a long long constant is C++ compiler specific)
112
113// Build a 64bit integer constant
114#define CONST64(x)  (x ## LL)
115#define UCONST64(x) (x ## ULL)
116
117const jlong min_jlong = CONST64(0x8000000000000000);
118const jlong max_jlong = CONST64(0x7fffffffffffffff);
119
120//----------------------------------------------------------------------------------------------------
121// Debugging
122
123#define DEBUG_EXCEPTION ::abort();
124
125extern "C" void breakpoint();
126#define BREAKPOINT ::breakpoint()
127
128// checking for nanness
129#ifdef AIX
130inline int g_isnan(float  f) { return isnan(f); }
131inline int g_isnan(double f) { return isnan(f); }
132#else
133#error "missing platform-specific definition here"
134#endif
135
136// Checking for finiteness
137
138inline int g_isfinite(jfloat  f)                 { return finite(f); }
139inline int g_isfinite(jdouble f)                 { return finite(f); }
140
141
142// Wide characters
143
144inline int wcslen(const jchar* x) { return wcslen((const wchar_t*)x); }
145
146
147// Portability macros
148#define PRAGMA_INTERFACE             #pragma interface
149#define PRAGMA_IMPLEMENTATION        #pragma implementation
150#define VALUE_OBJ_CLASS_SPEC
151
152// Formatting.
153#ifdef _LP64
154#define FORMAT64_MODIFIER "l"
155#else // !_LP64
156#define FORMAT64_MODIFIER "ll"
157#endif // _LP64
158
159// Cannot use xlc's offsetof as implementation of hotspot's
160// offset_of(), because xlc warns about applying offsetof() to non-POD
161// object and xlc cannot compile the expression offsetof(DataLayout,
162// _cells[index]) in DataLayout::cell_offset() .  Therefore we define
163// offset_of as it is defined for gcc.
164#define offset_of(klass,field) (size_t)((intx)&(((klass*)16)->field) - 16)
165
166// Some constant sizes used throughout the AIX port
167#define SIZE_1K   ((uint64_t) UCONST64(        0x400))
168#define SIZE_4K   ((uint64_t) UCONST64(       0x1000))
169#define SIZE_64K  ((uint64_t) UCONST64(      0x10000))
170#define SIZE_1M   ((uint64_t) UCONST64(     0x100000))
171#define SIZE_4M   ((uint64_t) UCONST64(     0x400000))
172#define SIZE_8M   ((uint64_t) UCONST64(     0x800000))
173#define SIZE_16M  ((uint64_t) UCONST64(    0x1000000))
174#define SIZE_256M ((uint64_t) UCONST64(   0x10000000))
175#define SIZE_1G   ((uint64_t) UCONST64(   0x40000000))
176#define SIZE_2G   ((uint64_t) UCONST64(   0x80000000))
177#define SIZE_4G   ((uint64_t) UCONST64(  0x100000000))
178#define SIZE_16G  ((uint64_t) UCONST64(  0x400000000))
179#define SIZE_32G  ((uint64_t) UCONST64(  0x800000000))
180#define SIZE_64G  ((uint64_t) UCONST64( 0x1000000000))
181#define SIZE_1T   ((uint64_t) UCONST64(0x10000000000))
182
183#ifndef USE_LIBRARY_BASED_TLS_ONLY
184#define THREAD_LOCAL_DECL __thread
185#endif
186
187#endif // SHARE_VM_UTILITIES_GLOBALDEFINITIONS_XLC_HPP
188