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1 /* |
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2 * Copyright 1998-2007 Sun Microsystems, Inc. All Rights Reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
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20 * CA 95054 USA or visit www.sun.com if you need additional information or |
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21 * have any questions. |
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22 * |
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23 */ |
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24 |
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25 // This file holds compiler-dependent includes, |
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26 // globally used constants & types, class (forward) |
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27 // declarations and a few frequently used utility functions. |
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28 |
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29 #include <ctype.h> |
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30 #include <string.h> |
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31 #include <stdarg.h> |
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32 #include <stddef.h> |
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33 #include <stdio.h> |
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34 #include <stdlib.h> |
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35 #include <wchar.h> |
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36 |
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37 #ifdef SOLARIS |
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38 #include <ieeefp.h> |
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39 #endif // SOLARIS |
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40 |
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41 #include <math.h> |
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42 #ifndef FP_PZERO |
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43 // Linux doesn't have positive/negative zero |
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44 #define FP_PZERO FP_ZERO |
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45 #endif |
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46 #if (!defined fpclass) && ((!defined SPARC) || (!defined SOLARIS)) |
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47 #define fpclass fpclassify |
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48 #endif |
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49 |
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50 #include <time.h> |
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51 #include <fcntl.h> |
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52 #include <dlfcn.h> |
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53 #include <pthread.h> |
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54 |
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55 #ifdef SOLARIS |
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56 #include <thread.h> |
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57 #endif // SOLARIS |
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58 |
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59 #include <limits.h> |
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60 #include <errno.h> |
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61 |
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62 #ifdef SOLARIS |
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63 #include <sys/trap.h> |
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64 #include <sys/regset.h> |
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65 #include <sys/procset.h> |
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66 #include <ucontext.h> |
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67 #include <setjmp.h> |
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68 #endif // SOLARIS |
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69 |
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70 # ifdef SOLARIS_MUTATOR_LIBTHREAD |
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71 # include <sys/procfs.h> |
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72 # endif |
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73 |
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74 #ifdef LINUX |
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75 #include <inttypes.h> |
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76 #include <signal.h> |
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77 #include <ucontext.h> |
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78 #include <sys/time.h> |
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79 #endif // LINUX |
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80 |
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81 // 4810578: varargs unsafe on 32-bit integer/64-bit pointer architectures |
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82 // When __cplusplus is defined, NULL is defined as 0 (32-bit constant) in |
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83 // system header files. On 32-bit architectures, there is no problem. |
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84 // On 64-bit architectures, defining NULL as a 32-bit constant can cause |
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85 // problems with varargs functions: C++ integral promotion rules say for |
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86 // varargs, we pass the argument 0 as an int. So, if NULL was passed to a |
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87 // varargs function it will remain 32-bits. Depending on the calling |
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88 // convention of the machine, if the argument is passed on the stack then |
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89 // only 32-bits of the "NULL" pointer may be initialized to zero. The |
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90 // other 32-bits will be garbage. If the varargs function is expecting a |
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91 // pointer when it extracts the argument, then we have a problem. |
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92 // |
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93 // Solution: For 64-bit architectures, redefine NULL as 64-bit constant 0. |
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94 // |
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95 // Note: this fix doesn't work well on Linux because NULL will be overwritten |
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96 // whenever a system header file is included. Linux handles NULL correctly |
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97 // through a special type '__null'. |
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98 #ifdef SOLARIS |
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99 #ifdef _LP64 |
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100 #undef NULL |
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101 #define NULL 0L |
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102 #else |
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103 #ifndef NULL |
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104 #define NULL 0 |
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105 #endif |
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106 #endif |
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107 #endif |
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108 |
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109 // NULL vs NULL_WORD: |
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110 // On Linux NULL is defined as a special type '__null'. Assigning __null to |
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111 // integer variable will cause gcc warning. Use NULL_WORD in places where a |
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112 // pointer is stored as integer value. On some platforms, sizeof(intptr_t) > |
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113 // sizeof(void*), so here we want something which is integer type, but has the |
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114 // same size as a pointer. |
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115 #ifdef LINUX |
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116 #ifdef _LP64 |
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117 #define NULL_WORD 0L |
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118 #else |
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119 #define NULL_WORD 0 |
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120 #endif |
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121 #else |
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122 #define NULL_WORD NULL |
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123 #endif |
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124 |
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125 #ifndef LINUX |
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126 // Compiler-specific primitive types |
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127 typedef unsigned short uint16_t; |
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128 #ifndef _UINT32_T |
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129 #define _UINT32_T |
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130 typedef unsigned int uint32_t; |
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131 #endif // _UINT32_T |
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132 |
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133 #if !defined(_SYS_INT_TYPES_H) |
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134 #ifndef _UINT64_T |
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135 #define _UINT64_T |
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136 typedef unsigned long long uint64_t; |
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137 #endif // _UINT64_T |
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138 // %%%% how to access definition of intptr_t portably in 5.5 onward? |
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139 typedef int intptr_t; |
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140 typedef unsigned int uintptr_t; |
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141 // If this gets an error, figure out a symbol XXX that implies the |
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142 // prior definition of intptr_t, and add "&& !defined(XXX)" above. |
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143 #endif // _SYS_INT_TYPES_H |
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144 |
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145 #endif // !LINUX |
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146 |
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147 // Additional Java basic types |
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148 |
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149 typedef uint8_t jubyte; |
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150 typedef uint16_t jushort; |
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151 typedef uint32_t juint; |
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152 typedef uint64_t julong; |
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153 |
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154 //---------------------------------------------------------------------------------------------------- |
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155 // Special (possibly not-portable) casts |
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156 // Cast floats into same-size integers and vice-versa w/o changing bit-pattern |
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157 // %%%%%% These seem like standard C++ to me--how about factoring them out? - Ungar |
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158 |
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159 inline jint jint_cast (jfloat x) { return *(jint* )&x; } |
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160 inline jlong jlong_cast (jdouble x) { return *(jlong* )&x; } |
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161 |
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162 inline jfloat jfloat_cast (jint x) { return *(jfloat* )&x; } |
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163 inline jdouble jdouble_cast(jlong x) { return *(jdouble*)&x; } |
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164 |
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165 //---------------------------------------------------------------------------------------------------- |
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166 // Constant for jlong (specifying an long long canstant is C++ compiler specific) |
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167 |
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168 // Build a 64bit integer constant |
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169 #define CONST64(x) (x ## LL) |
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170 #define UCONST64(x) (x ## ULL) |
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171 |
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172 const jlong min_jlong = CONST64(0x8000000000000000); |
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173 const jlong max_jlong = CONST64(0x7fffffffffffffff); |
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174 |
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175 |
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176 #ifdef SOLARIS |
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177 //---------------------------------------------------------------------------------------------------- |
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178 // ANSI C++ fixes |
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179 // NOTE:In the ANSI committee's continuing attempt to make each version |
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180 // of C++ incompatible with the previous version, you can no longer cast |
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181 // pointers to functions without specifying linkage unless you want to get |
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182 // warnings. |
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183 // |
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184 // This also means that pointers to functions can no longer be "hidden" |
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185 // in opaque types like void * because at the invokation point warnings |
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186 // will be generated. While this makes perfect sense from a type safety |
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187 // point of view it causes a lot of warnings on old code using C header |
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188 // files. Here are some typedefs to make the job of silencing warnings |
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189 // a bit easier. |
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190 // |
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191 // The final kick in the teeth is that you can only have extern "C" linkage |
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192 // specified at file scope. So these typedefs are here rather than in the |
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193 // .hpp for the class (os:Solaris usually) that needs them. |
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194 |
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195 extern "C" { |
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196 typedef int (*int_fnP_thread_t_iP_uP_stack_tP_gregset_t)(thread_t, int*, unsigned *, stack_t*, gregset_t); |
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197 typedef int (*int_fnP_thread_t_i_gregset_t)(thread_t, int, gregset_t); |
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198 typedef int (*int_fnP_thread_t_i)(thread_t, int); |
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199 typedef int (*int_fnP_thread_t)(thread_t); |
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200 |
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201 typedef int (*int_fnP_cond_tP_mutex_tP_timestruc_tP)(cond_t *cv, mutex_t *mx, timestruc_t *abst); |
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202 typedef int (*int_fnP_cond_tP_mutex_tP)(cond_t *cv, mutex_t *mx); |
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203 |
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204 // typedef for missing API in libc |
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205 typedef int (*int_fnP_mutex_tP_i_vP)(mutex_t *, int, void *); |
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206 typedef int (*int_fnP_mutex_tP)(mutex_t *); |
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207 typedef int (*int_fnP_cond_tP_i_vP)(cond_t *cv, int scope, void *arg); |
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208 typedef int (*int_fnP_cond_tP)(cond_t *cv); |
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209 }; |
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210 #endif // SOLARIS |
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211 |
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212 //---------------------------------------------------------------------------------------------------- |
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213 // Debugging |
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214 |
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215 #define DEBUG_EXCEPTION ::abort(); |
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216 |
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217 extern "C" void breakpoint(); |
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218 #define BREAKPOINT ::breakpoint() |
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219 |
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220 // checking for nanness |
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221 #ifdef SOLARIS |
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222 #ifdef SPARC |
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223 inline int g_isnan(float f) { return isnanf(f); } |
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224 #else |
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225 // isnanf() broken on Intel Solaris use isnand() |
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226 inline int g_isnan(float f) { return isnand(f); } |
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227 #endif |
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228 inline int g_isnan(double f) { return isnand(f); } |
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229 #elif LINUX |
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230 inline int g_isnan(float f) { return isnanf(f); } |
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231 inline int g_isnan(double f) { return isnan(f); } |
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232 #else |
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233 #error "missing platform-specific definition here" |
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234 #endif |
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235 |
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236 // Checking for finiteness |
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237 |
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238 inline int g_isfinite(jfloat f) { return finite(f); } |
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239 inline int g_isfinite(jdouble f) { return finite(f); } |
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240 |
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241 |
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242 // Wide characters |
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243 |
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244 inline int wcslen(const jchar* x) { return wcslen((const wchar_t*)x); } |
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245 |
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246 |
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247 // Portability macros |
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248 #define PRAGMA_INTERFACE #pragma interface |
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249 #define PRAGMA_IMPLEMENTATION #pragma implementation |
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250 #define VALUE_OBJ_CLASS_SPEC |
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251 |
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252 #if (__GNUC__ == 2) && (__GNUC_MINOR__ < 95) |
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253 #define TEMPLATE_TABLE_BUG |
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254 #endif |
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255 #if (__GNUC__ == 2) && (__GNUC_MINOR__ >= 96) |
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256 #define CONST_SDM_BUG |
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257 #endif |
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258 |
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259 // Formatting. |
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260 #ifdef _LP64 |
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261 #define FORMAT64_MODIFIER "l" |
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262 #else // !_LP64 |
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263 #define FORMAT64_MODIFIER "ll" |
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264 #endif // _LP64 |
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265 |
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266 // HACK: gcc warns about applying offsetof() to non-POD object or calculating |
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267 // offset directly when base address is NULL. Use 16 to get around the |
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268 // warning. gcc-3.4 has an option -Wno-invalid-offsetof to suppress |
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269 // this warning. |
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270 #define offset_of(klass,field) (size_t)((intx)&(((klass*)16)->field) - 16) |
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271 |
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272 #ifdef offsetof |
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273 # undef offsetof |
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274 #endif |
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275 #define offsetof(klass,field) offset_of(klass,field) |