Tue, 29 Jul 2014 13:54:16 +0200
8040121: Load variable through a pointer of an incompatible type in src/hotspot/src/share/vm: opto/output.cpp, runtime/sharedRuntimeTrans.cpp, utilities/globalDefinitions_visCPP.hpp
Summary: Fixed parfait warnings in globalDefinitions files by using a union for casts.
Reviewed-by: kvn
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26 #ifndef SHARE_VM_UTILITIES_GLOBALDEFINITIONS_XLC_HPP
27 #define SHARE_VM_UTILITIES_GLOBALDEFINITIONS_XLC_HPP
29 #include "prims/jni.h"
31 // This file holds compiler-dependent includes,
32 // globally used constants & types, class (forward)
33 // declarations and a few frequently used utility functions.
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>
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
52 #include <time.h>
53 #include <fcntl.h>
54 #include <dlfcn.h>
55 #include <pthread.h>
57 #include <limits.h>
58 #include <errno.h>
60 #include <stdint.h>
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
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
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
107 // Compiler-specific primitive types
108 // All defs of int (uint16_6 etc) are defined in AIX' /usr/include/stdint.h
110 // Additional Java basic types
112 typedef uint8_t jubyte;
113 typedef uint16_t jushort;
114 typedef uint32_t juint;
115 typedef uint64_t julong;
118 //----------------------------------------------------------------------------------------------------
119 // Constant for jlong (specifying an long long canstant is C++ compiler specific)
121 // Build a 64bit integer constant
122 #define CONST64(x) (x ## LL)
123 #define UCONST64(x) (x ## ULL)
125 const jlong min_jlong = CONST64(0x8000000000000000);
126 const jlong max_jlong = CONST64(0x7fffffffffffffff);
128 //----------------------------------------------------------------------------------------------------
129 // Debugging
131 #define DEBUG_EXCEPTION ::abort();
133 extern "C" void breakpoint();
134 #define BREAKPOINT ::breakpoint()
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
144 // Checking for finiteness
146 inline int g_isfinite(jfloat f) { return finite(f); }
147 inline int g_isfinite(jdouble f) { return finite(f); }
150 // Wide characters
152 inline int wcslen(const jchar* x) { return wcslen((const wchar_t*)x); }
155 // Portability macros
156 #define PRAGMA_INTERFACE #pragma interface
157 #define PRAGMA_IMPLEMENTATION #pragma implementation
158 #define VALUE_OBJ_CLASS_SPEC
160 // Formatting.
161 #ifdef _LP64
162 #define FORMAT64_MODIFIER "l"
163 #else // !_LP64
164 #define FORMAT64_MODIFIER "ll"
165 #endif // _LP64
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)
174 // Some constant sizes used throughout the AIX port
175 #define SIZE_1K ((uint64_t) 0x400ULL)
176 #define SIZE_4K ((uint64_t) 0x1000ULL)
177 #define SIZE_64K ((uint64_t) 0x10000ULL)
178 #define SIZE_1M ((uint64_t) 0x100000ULL)
179 #define SIZE_4M ((uint64_t) 0x400000ULL)
180 #define SIZE_8M ((uint64_t) 0x800000ULL)
181 #define SIZE_16M ((uint64_t) 0x1000000ULL)
182 #define SIZE_256M ((uint64_t) 0x10000000ULL)
183 #define SIZE_1G ((uint64_t) 0x40000000ULL)
184 #define SIZE_2G ((uint64_t) 0x80000000ULL)
185 #define SIZE_4G ((uint64_t) 0x100000000ULL)
186 #define SIZE_16G ((uint64_t) 0x400000000ULL)
187 #define SIZE_32G ((uint64_t) 0x800000000ULL)
188 #define SIZE_64G ((uint64_t) 0x1000000000ULL)
189 #define SIZE_1T ((uint64_t) 0x10000000000ULL)
192 #endif // SHARE_VM_UTILITIES_GLOBALDEFINITIONS_XLC_HPP