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hotspot/src/share/vm/utilities/globalDefinitions_sparcWorks.hpp

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+/*
+ * Copyright 1997-2007 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+// This file holds compiler-dependent includes,
+// globally used constants & types, class (forward)
+// declarations and a few frequently used utility functions.
+
+
+# include <ctype.h>
+# include <dirent.h>
+# include <string.h>
+# include <strings.h>     // for bsd'isms
+# include <stdarg.h>
+# include <stddef.h>      // for offsetof
+# include <stdio.h>
+# include <stdlib.h>
+# include <wchar.h>
+# include <stdarg.h>
+# include <ieeefp.h>
+# include <math.h>
+# include <time.h>
+# include <fcntl.h>
+# include <dlfcn.h>
+# include <pthread.h>
+# include <thread.h>
+# include <limits.h>
+# include <errno.h>
+# include <sys/trap.h>
+# include <sys/regset.h>
+# include <sys/procset.h>
+# include <ucontext.h>
+# include <setjmp.h>
+# ifdef SOLARIS_MUTATOR_LIBTHREAD
+# include <sys/procfs.h>
+# endif
+
+// 4810578: varargs unsafe on 32-bit integer/64-bit pointer architectures
+// When __cplusplus is defined, NULL is defined as 0 (32-bit constant) in
+// system header files.  On 32-bit architectures, there is no problem.
+// On 64-bit architectures, defining NULL as a 32-bit constant can cause
+// problems with varargs functions: C++ integral promotion rules say for
+// varargs, we pass the argument 0 as an int.  So, if NULL was passed to a
+// varargs function it will remain 32-bits.  Depending on the calling
+// convention of the machine, if the argument is passed on the stack then
+// only 32-bits of the "NULL" pointer may be initialized to zero.  The
+// other 32-bits will be garbage.  If the varargs function is expecting a
+// pointer when it extracts the argument, then we have a problem.
+//
+// Solution: For 64-bit architectures, redefine NULL as 64-bit constant 0.
+#ifdef _LP64
+#undef NULL
+#define NULL 0L
+#else
+#ifndef NULL
+#define NULL 0
+#endif
+#endif
+
+// NULL vs NULL_WORD:
+// On Linux NULL is defined as a special type '__null'. Assigning __null to
+// integer variable will cause gcc warning. Use NULL_WORD in places where a
+// pointer is stored as integer value.
+#define NULL_WORD NULL
+
+// Compiler-specific primitive types
+typedef unsigned short     uint16_t;
+#ifndef _UINT32_T
+#define _UINT32_T
+typedef unsigned int       uint32_t;
+#endif
+#if !defined(_SYS_INT_TYPES_H)
+#ifndef _UINT64_T
+#define _UINT64_T
+typedef unsigned long long uint64_t;
+#endif
+// %%%% how to access definition of intptr_t portably in 5.5 onward?
+typedef int                     intptr_t;
+typedef unsigned int            uintptr_t;
+// If this gets an error, figure out a symbol XXX that implies the
+// prior definition of intptr_t, and add "&& !defined(XXX)" above.
+#endif
+
+// Additional Java basic types
+
+typedef unsigned char      jubyte;
+typedef unsigned short     jushort;
+typedef unsigned int       juint;
+typedef unsigned long long julong;
+
+//----------------------------------------------------------------------------------------------------
+// Special (possibly not-portable) casts
+// Cast floats into same-size integers and vice-versa w/o changing bit-pattern
+
+inline jint    jint_cast   (jfloat  x)           { return *(jint*   )&x; }
+inline jlong   jlong_cast  (jdouble x)           { return *(jlong*  )&x; }
+
+inline jfloat  jfloat_cast (jint    x)           { return *(jfloat* )&x; }
+inline jdouble jdouble_cast(jlong   x)           { return *(jdouble*)&x; }
+
+//----------------------------------------------------------------------------------------------------
+// Constant for jlong (specifying an long long constant is C++ compiler specific)
+
+// Build a 64bit integer constant
+#define CONST64(x)  (x ## LL)
+#define UCONST64(x) (x ## ULL)
+
+const jlong min_jlong = CONST64(0x8000000000000000);
+const jlong max_jlong = CONST64(0x7fffffffffffffff);
+
+
+//----------------------------------------------------------------------------------------------------
+// ANSI C++ fixes
+// NOTE:In the ANSI committee's continuing attempt to make each version
+// of C++ incompatible with the previous version, you can no longer cast
+// pointers to functions without specifying linkage unless you want to get
+// warnings.
+//
+// This also means that pointers to functions can no longer be "hidden"
+// in opaque types like void * because at the invokation point warnings
+// will be generated. While this makes perfect sense from a type safety
+// point of view it causes a lot of warnings on old code using C header
+// files. Here are some typedefs to make the job of silencing warnings
+// a bit easier.
+//
+// The final kick in the teeth is that you can only have extern "C" linkage
+// specified at file scope. So these typedefs are here rather than in the
+// .hpp for the class (os:Solaris usually) that needs them.
+
+extern "C" {
+   typedef int (*int_fnP_thread_t_iP_uP_stack_tP_gregset_t)(thread_t, int*, unsigned *, stack_t*, gregset_t);
+   typedef int (*int_fnP_thread_t_i_gregset_t)(thread_t, int, gregset_t);
+   typedef int (*int_fnP_thread_t_i)(thread_t, int);
+   typedef int (*int_fnP_thread_t)(thread_t);
+
+   typedef int (*int_fnP_cond_tP_mutex_tP_timestruc_tP)(cond_t *cv, mutex_t *mx, timestruc_t *abst);
+   typedef int (*int_fnP_cond_tP_mutex_tP)(cond_t *cv, mutex_t *mx);
+
+   // typedef for missing API in libc
+   typedef int (*int_fnP_mutex_tP_i_vP)(mutex_t *, int, void *);
+   typedef int (*int_fnP_mutex_tP)(mutex_t *);
+   typedef int (*int_fnP_cond_tP_i_vP)(cond_t *cv, int scope, void *arg);
+   typedef int (*int_fnP_cond_tP)(cond_t *cv);
+};
+
+
+//----------------------------------------------------------------------------------------------------
+// Debugging
+
+#define DEBUG_EXCEPTION ::abort();
+
+extern "C" void breakpoint();
+#define BREAKPOINT ::breakpoint()
+
+// checking for nanness
+
+#ifdef SPARC
+inline int g_isnan(float  f) { return isnanf(f); }
+#else
+// isnanf() broken on Intel Solaris use isnand()
+inline int g_isnan(float  f) { return isnand(f); }
+#endif
+
+inline int g_isnan(double f) { return isnand(f); }
+
+// Checking for finiteness
+
+inline int g_isfinite(jfloat  f)                 { return finite(f); }
+inline int g_isfinite(jdouble f)                 { return finite(f); }
+
+
+// Wide characters
+
+inline int wcslen(const jchar* x) { return wcslen((const wchar_t*)x); }
+
+
+// Misc
+int local_vsnprintf(char* buf, size_t count, const char* fmt, va_list argptr);
+#define vsnprintf local_vsnprintf
+
+
+// Portability macros
+#define PRAGMA_INTERFACE
+#define PRAGMA_IMPLEMENTATION
+#define PRAGMA_IMPLEMENTATION_(arg)
+#define VALUE_OBJ_CLASS_SPEC    : public _ValueObj
+
+// Formatting.
+#ifdef _LP64
+#define FORMAT64_MODIFIER "l"
+#else // !_LP64
+#define FORMAT64_MODIFIER "ll"
+#endif // _LP64
+
+#define offset_of(klass,field) offsetof(klass,field)