Changeset 183 for trunk/src/emx/include/sys/cdefs.h

Timestamp:

May 19, 2003, 4:41:00 AM (22 years ago)

Author:

bird

Message:

#434: Initial tcpip header merges.

File:

• trunk/src/emx/include/sys/cdefs.h (modified) (4 diffs, 1 prop)

trunk/src/emx/include/sys/cdefs.h

@@ -1 @@
-/*
+/*- modified for gcc/os2 by bird 2003
+ *
  * Copyright (c) 1991, 1993
  *      The Regents of the University of California.  All rights reserved.
@@ -34 +35 @@
  * SUCH DAMAGE.
  *
- *      @(#)cdefs.h     8.7 (Berkeley) 1/21/94
- */
-
-#ifndef _CDEFS_H_
-#define _CDEFS_H_
+ *      @(#)cdefs.h     8.8 (Berkeley) 1/9/95
+ * $FreeBSD: src/sys/sys/cdefs.h,v 1.68 2002/10/21 20:50:30 mike Exp $
+ */
+
+#ifndef _SYS_CDEFS_H_
+#define _SYS_CDEFS_H_
+#define _CDEFS_H_ /* compatability */
 
 #if defined(__cplusplus)
 #define __BEGIN_DECLS   extern "C" {
-#define __END_DECLS     };
+#define __END_DECLS     }
 #else
 #define __BEGIN_DECLS
@@ -51 +54 @@
  * The __CONCAT macro is used to concatenate parts of symbol names, e.g.
  * with "#define OLD(foo) __CONCAT(old,foo)", OLD(foo) produces oldfoo.
- * The __CONCAT macro is a bit tricky -- make sure you don't put spaces
- * in between its arguments.  __CONCAT can also concatenate double-quoted
- * strings produced by the __STRING macro, but this only works with ANSI C.
+ * The __CONCAT macro is a bit tricky to use if it must work in non-ANSI
+ * mode -- there must be no spaces between its arguments, and for nested
+ * __CONCAT's, all the __CONCAT's must be at the left.  __CONCAT can also
+ * concatenate double-quoted strings produced by the __STRING macro, but
+ * this only works with ANSI C.
+ *
+ * __XSTRING is like __STRING, but it expands any macros in its argument
+ * first.  It is only available with ANSI C.
  */
 #if defined(__STDC__) || defined(__cplusplus)
 #define __P(protos)     protos          /* full-blown ANSI C */
-#define __CONCAT(x,y)   x ## y
-#define __STRING(x)     #x
+#define __CONCAT1(x,y)  x ## y
+#define __CONCAT(x,y)   __CONCAT1(x,y)
+#define __STRING(x)     #x              /* stringify without expanding x */
+#define __XSTRING(x)    __STRING(x)     /* expand x, then stringify */
 
 #define __const         const           /* define reserved names to standard */
@@ -94 +104 @@
 #define signed
 #define volatile
-#endif
+#endif  /* !NO_ANSI_KEYWORDS */
 #endif  /* !__GNUC__ */
 #endif  /* !(__STDC__ || __cplusplus) */
 
 /*
- * GCC1 and some versions of GCC2 declare dead (non-returning) and
- * pure (no side effects) functions using "volatile" and "const";
- * unfortunately, these then cause warnings under "-ansi -pedantic".
- * GCC2 uses a new, peculiar __attribute__((attrs)) style.  All of
- * these work for GNU C++ (modulo a slight glitch in the C++ grammar
- * in the distribution version of 2.5.5).
- */
-#if !defined(__GNUC__) || __GNUC__ < 2 || __GNUC_MINOR__ < 5
-#define __attribute__(x)        /* delete __attribute__ if non-gcc or gcc1 */
-#if defined(__GNUC__) && !defined(__STRICT_ANSI__)
-#define __dead          __volatile
-#define __pure          __const
-#endif
-#endif
-
-/* Delete pseudo-keywords wherever they are not available or needed. */
-#ifndef __dead
-#define __dead
-#define __pure
-#endif
-
-#endif /* !_CDEFS_H_ */
+ * Compiler-dependent macros to help declare dead (non-returning) and
+ * pure (no side effects) functions, and unused variables.  They are
+ * null except for versions of gcc that are known to support the features
+ * properly (old versions of gcc-2 supported the dead and pure features
+ * in a different (wrong) way).  If we do not provide an implementation
+ * for a given compiler, let the compile fail if it is told to use
+ * a feature that we cannot live without.
+ */
+#ifdef lint
+#define __dead2
+#define __pure2
+#define __unused
+#define __packed
+#define __aligned(x)
+#define __section(x)
+#else
+#if __GNUC__ < 2 || __GNUC__ == 2 && __GNUC_MINOR__ < 5
+#define __dead2
+#define __pure2
+#define __unused
+#endif
+#if __GNUC__ == 2 && __GNUC_MINOR__ >= 5 && __GNUC_MINOR__ < 7
+#define __dead2         __attribute__((__noreturn__))
+#define __pure2         __attribute__((__const__))
+#define __unused
+/* XXX Find out what to do for __packed, __aligned and __section */
+#endif
+#if __GNUC__ == 2 && __GNUC_MINOR__ >= 7 || __GNUC__ == 3
+#define __dead2         __attribute__((__noreturn__))
+#define __pure2         __attribute__((__const__))
+#define __unused        __attribute__((__unused__))
+#define __packed        __attribute__((__packed__))
+#define __aligned(x)    __attribute__((__aligned__(x)))
+#define __section(x)    __attribute__((__section__(x)))
+#endif
+#endif
+
+/* XXX: should use `#if __STDC_VERSION__ < 199901'. */
+#if !(__GNUC__ == 2 && __GNUC_MINOR__ >= 7 || __GNUC__ >= 3)
+#define __func__        NULL
+#endif
+
+#if __GNUC__ >= 2 && !defined(__STRICT_ANSI__) || __STDC_VERSION__ >= 199901
+#define __LONG_LONG_SUPPORTED
+#endif
+
+/*
+ * GCC 2.95 provides `__restrict' as an extension to C90 to support the
+ * C99-specific `restrict' type qualifier.  We happen to use `__restrict' as
+ * a way to define the `restrict' type qualifier without disturbing older
+ * software that is unaware of C99 keywords.
+ */
+#if !(__GNUC__ == 2 && __GNUC_MINOR__ == 95)
+#if __STDC_VERSION__ < 199901
+#define __restrict
+#else
+#define __restrict      restrict
+#endif
+#endif
+
+/*
+ * We define this here since <stddef.h>, <sys/queue.h>, and <sys/types.h>
+ * require it.
+ */
+#define __offsetof(type, field) ((size_t)(&((type *)0)->field))
+
+/*
+ * Compiler-dependent macros to declare that functions take printf-like
+ * or scanf-like arguments.  They are null except for versions of gcc
+ * that are known to support the features properly (old versions of gcc-2
+ * didn't permit keeping the keywords out of the application namespace).
+ */
+#if __GNUC__ < 2 || __GNUC__ == 2 && __GNUC_MINOR__ < 7
+#define __printflike(fmtarg, firstvararg)
+#define __scanflike(fmtarg, firstvararg)
+#else
+#define __printflike(fmtarg, firstvararg) \
+            __attribute__((__format__ (__printf__, fmtarg, firstvararg)))
+#define __scanflike(fmtarg, firstvararg) \
+            __attribute__((__format__ (__scanf__, fmtarg, firstvararg)))
+#endif
+
+/* Compiler-dependent macros that rely on FreeBSD-specific extensions. */
+#if __FreeBSD_cc_version >= 300001 && __FreeBSD_cc_version < 500003
+#define __printf0like(fmtarg, firstvararg) \
+            __attribute__((__format__ (__printf0__, fmtarg, firstvararg)))
+#else
+#define __printf0like(fmtarg, firstvararg)
+#endif
+
+#if 0 /* def __GNUC__ - ELF specific, so skip everything */
+#define __strong_reference(sym,aliassym)        \
+        extern __typeof (sym) aliassym __attribute__ ((__alias__ (#sym)));
+#ifdef __STDC__
+#define __weak_reference(sym,alias)     \
+        __asm__(".weak " #alias);       \
+        __asm__(".equ "  #alias ", " #sym)
+#define __warn_references(sym,msg)      \
+        __asm__(".section .gnu.warning." #sym); \
+        __asm__(".asciz \"" msg "\"");  \
+        __asm__(".previous")
+#else
+#define __weak_reference(sym,alias)     \
+        __asm__(".weak alias");         \
+        __asm__(".equ alias, sym")
+#define __warn_references(sym,msg)      \
+        __asm__(".section .gnu.warning.sym"); \
+        __asm__(".asciz \"msg\"");      \
+        __asm__(".previous")
+#endif  /* __STDC__ */
+#endif  /* __GNUC__ */
+
+#if 0 /*def __GNUC__ - ELF specific. */
+#define __IDSTRING(name,string) __asm__(".ident\t\"" string "\"")
+#else
+/*
+ * This doesn't work in header files. But it may be better than nothing.
+ * The alternative is: #define __IDSTRING(name,string)  [nothing]
+ */
+#define __IDSTRING(name,string) static const char name[] __unused = string
+#endif
+
+/*
+ * Embed the rcs id of a source file in the resulting library.  Note that in
+ * more recent ELF binutils, we use .ident allowing the ID to be stripped.
+ * Usage:
+ *      __FBSDID("$FreeBSD: src/sys/sys/cdefs.h,v 1.68 2002/10/21 20:50:30 mike Exp $");
+ */
+#ifndef __FBSDID
+#if !defined(lint) && !defined(STRIP_FBSDID)
+#define __FBSDID(s)     __IDSTRING(__CONCAT(__rcsid_,__LINE__),s)
+#else
+#define __FBSDID(s)     struct __hack
+#endif
+#endif
+
+#ifndef __RCSID
+#ifndef NO__RCSID
+#define __RCSID(s)      __IDSTRING(__CONCAT(__rcsid_,__LINE__),s)
+#else
+#define __RCSID(s)
+#endif
+#endif
+
+#ifndef __RCSID_SOURCE
+#ifndef NO__RCSID_SOURCE
+#define __RCSID_SOURCE(s)       __IDSTRING(__CONCAT(__rcsid_source_,__LINE__),s)
+#else
+#define __RCSID_SOURCE(s)
+#endif
+#endif
+
+#ifndef __SCCSID
+#ifndef NO__SCCSID
+#define __SCCSID(s)     __IDSTRING(__CONCAT(__sccsid_,__LINE__),s)
+#else
+#define __SCCSID(s)
+#endif
+#endif
+
+#ifndef __COPYRIGHT
+#ifndef NO__COPYRIGHT
+#define __COPYRIGHT(s)  __IDSTRING(__CONCAT(__copyright_,__LINE__),s)
+#else
+#define __COPYRIGHT(s)
+#endif
+#endif
+
+#ifndef __DECONST
+#define __DECONST(type, var)    ((type)(uintptr_t)(const void *)(var))
+#endif
+
+#ifndef __DEVOLATILE
+#define __DEVOLATILE(type, var) ((type)(uintptr_t)(volatile void *)(var))
+#endif
+
+#ifndef __DEQUALIFY
+#define __DEQUALIFY(type, var)  ((type)(uintptr_t)(const volatile void *)(var))
+#endif
+
+/*-
+ * The following definitions are an extension of the behavior originally
+ * implemented in <sys/_posix.h>, but with a different level of granularity.
+ * POSIX.1 requires that the macros we test be defined before any standard
+ * header file is included.
+ *
+ * Here's a quick run-down of the versions:
+ *  defined(_POSIX_SOURCE)              1003.1-1988
+ *  _POSIX_C_SOURCE == 1                1003.1-1990
+ *  _POSIX_C_SOURCE == 2                1003.2-1992 C Language Binding Option
+ *  _POSIX_C_SOURCE == 199309           1003.1b-1993
+ *  _POSIX_C_SOURCE == 199506           1003.1c-1995, 1003.1i-1995,
+ *                                      and the omnibus ISO/IEC 9945-1: 1996
+ *  _POSIX_C_SOURCE == 200112           1003.1-2001
+ *
+ * In addition, the X/Open Portability Guide, which is now the Single UNIX
+ * Specification, defines a feature-test macro which indicates the version of
+ * that specification, and which subsumes _POSIX_C_SOURCE.
+ *
+ * Our macros begin with two underscores to avoid namespace screwage.
+ */
+
+/* Deal with IEEE Std. 1003.1-1990, in which _POSIX_C_SOURCE == 1. */
+#if _POSIX_C_SOURCE == 1
+#undef _POSIX_C_SOURCE          /* Probably illegal, but beyond caring now. */
+#define _POSIX_C_SOURCE         199009
+#endif
+
+/* Deal with IEEE Std. 1003.2-1992, in which _POSIX_C_SOURCE == 2. */
+#if _POSIX_C_SOURCE == 2
+#undef _POSIX_C_SOURCE
+#define _POSIX_C_SOURCE         199209
+#endif
+
+/* Deal with various X/Open Portability Guides and Single UNIX Spec. */
+#ifdef _XOPEN_SOURCE
+#if _XOPEN_SOURCE - 0 >= 600
+#define __XSI_VISIBLE           600
+#undef _POSIX_C_SOURCE
+#define _POSIX_C_SOURCE         200112
+#elif _XOPEN_SOURCE - 0 >= 500
+#define __XSI_VISIBLE           500
+#undef _POSIX_C_SOURCE
+#define _POSIX_C_SOURCE         199506
+#endif
+#endif
+
+/*
+ * Deal with all versions of POSIX.  The ordering relative to the tests above is
+ * important.
+ */
+#if defined(_POSIX_SOURCE) && !defined(_POSIX_C_SOURCE)
+#define _POSIX_C_SOURCE         198808
+#endif
+#ifdef _POSIX_C_SOURCE
+#if _POSIX_C_SOURCE >= 200112
+#define __POSIX_VISIBLE         200112
+#define __ISO_C_VISIBLE         1999
+#elif _POSIX_C_SOURCE >= 199506
+#define __POSIX_VISIBLE         199506
+#define __ISO_C_VISIBLE         1990
+#elif _POSIX_C_SOURCE >= 199309
+#define __POSIX_VISIBLE         199309
+#define __ISO_C_VISIBLE         1990
+#elif _POSIX_C_SOURCE >= 199209
+#define __POSIX_VISIBLE         199209
+#define __ISO_C_VISIBLE         1990
+#elif _POSIX_C_SOURCE >= 199009
+#define __POSIX_VISIBLE         199009
+#define __ISO_C_VISIBLE         1990
+#else
+#define __POSIX_VISIBLE         198808
+#define __ISO_C_VISIBLE         0
+#endif /* _POSIX_C_SOURCE */
+#else
+/*-
+ * Deal with _ANSI_SOURCE:
+ * If it is defined, and no other compilation environment is explicitly
+ * requested, then define our internal feature-test macros to zero.  This
+ * makes no difference to the preprocessor (undefined symbols in preprocessing
+ * expressions are defined to have value zero), but makes it more convenient for
+ * a test program to print out the values.
+ *
+ * If a program mistakenly defines _ANSI_SOURCE and some other macro such as
+ * _POSIX_C_SOURCE, we will assume that it wants the broader compilation
+ * environment (and in fact we will never get here).
+ */
+#if defined(_ANSI_SOURCE)       /* Hide almost everything. */
+#define __POSIX_VISIBLE         0
+#define __XSI_VISIBLE           0
+#define __BSD_VISIBLE           0
+#define __ISO_C_VISIBLE         1990
+#elif defined(_C99_SOURCE)      /* Localism to specify strict C99 env. */
+#define __POSIX_VISIBLE         0
+#define __XSI_VISIBLE           0
+#define __BSD_VISIBLE           0
+#define __ISO_C_VISIBLE         1999
+#else                           /* Default environment: show everything. */
+#define __POSIX_VISIBLE         200112
+#define __XSI_VISIBLE           600
+#define __BSD_VISIBLE           1
+#define __ISO_C_VISIBLE         1999
+#endif
+#endif
+
+/* toolkit pollution */
+#define __TCPPROTO(args) __P(args)
+
+#endif /* !_SYS_CDEFS_H_ */