/* specific platforms, e.g. by swapping int instead of char. */
#define _PDCLIB_memswp( i, j, size ) char tmp; do { tmp = *i; *i++ = *j; *j++ = tmp; } while ( --size );
-/* The maximum value that errno can be set to. This is used to set the size */
-/* of the array in struct lconv (<locale.h>) holding error messages for the */
-/* strerror() and perror() functions. (If you change this value because you */
-/* are using additional errno values, you *HAVE* to provide appropriate error */
-/* messages for *ALL* locales.) */
-/* Default is 4 (0, ERANGE, EDOM, EILSEQ). */
-#define _PDCLIB_ERRNO_MAX 4
-
/* -------------------------------------------------------------------------- */
/* Integers */
/* -------------------------------------------------------------------------- */
/* first, before going to lengths about it. */
/* -------------------------------------------------------------------------- */
-/* Comment out (or delete) the line below if your 'char' type is unsigned. */
+/* Set to 0 if your 'char' type is unsigned. */
#define _PDCLIB_CHAR_SIGNED 1
/* Width of the integer types short, int, long, and long long, in bytes. */
#define _PDCLIB_SHRT_BYTES 2
#define _PDCLIB_INT_BYTES 4
#if defined(_LP64) || defined(__ILP64__)
- #define _PDCLIB_LONG_BYTES 8
+#define _PDCLIB_LONG_BYTES 8
#else
- #define _PDCLIB_LONG_BYTES 4
+#define _PDCLIB_LONG_BYTES 4
#endif
#define _PDCLIB_LLONG_BYTES 8
#define _PDCLIB_fast32 int
#define _PDCLIB_FAST32_CONV
+#ifdef __LP64__
+#define _PDCLIB_FAST64 LONG
+#define _PDCLIB_fast64 long
+#define _PDCLIB_FAST64_CONV l
+#else
#define _PDCLIB_FAST64 LLONG
#define _PDCLIB_fast64 long long
#define _PDCLIB_FAST64_CONV ll
+#endif
/* -------------------------------------------------------------------------- */
/* What follows are a couple of "special" typedefs and their limits. Again, */
/* defines here are merely "configuration". See above for details. */
/* -------------------------------------------------------------------------- */
-/* The result type of substracting two pointers */
+/* The types used for size_t and ptrdiff_t should not have an integer conversion
+ rank greater than that of signed long int unless the implementation supports
+ objects large enough to make this necessary.
+*/
+
+/* Result type of substracting two pointers (must be signed) */
#define _PDCLIB_ptrdiff long
#define _PDCLIB_PTRDIFF LONG
#define _PDCLIB_PTR_CONV l
+/* Result type of the 'sizeof' operator (must be unsigned) */
+#define _PDCLIB_size unsigned long
+#define _PDCLIB_SIZE ULONG
+
/* An integer type that can be accessed as atomic entity (think asynchronous
interrupts). The type itself is not defined in a freestanding environment,
but its limits are. (Don't ask.)
#define _PDCLIB_sig_atomic int
#define _PDCLIB_SIG_ATOMIC INT
-/* Result type of the 'sizeof' operator (must be unsigned) */
-#define _PDCLIB_size unsigned long
-#define _PDCLIB_SIZE ULONG
+/* Object type whose alignment is as great as supported by implementation
+ in all contexts.
+*/
+#define _PDCLIB_max_align long double
-/* Large enough an integer to hold all character codes of the largest supported
- locale.
+/* Integer type whose range of values can represent distinct codes for
+ all members of the largest extended character set specified among the
+ supported locales.
+ Note that the definition of this type must agree with the type used
+ by the compiler for L"" string and L'' character literals.
*/
-#define _PDCLIB_wint int
+#if defined(_LP64) || defined(__ILP64__)
#define _PDCLIB_wchar int
#define _PDCLIB_WCHAR INT
+#else
+#define _PDCLIB_wchar long
+#define _PDCLIB_WCHAR LONG
+#endif
+
+/* Each member of the basic character set shall have a code value equal
+ to its value when used as the lone character in an integer character
+ constant. If that is not the case, uncomment the following line.
+#define __STDC_MB_MIGHT_NEQ_WC__
+*/
+
+/* Integer type unchanged by default argument promotions that can hold any
+ value corresponding to characters of the extended character set, as well
+ as at least one value that does not correspond to any member of the
+ extended character set (WEOF).
+*/
+#define _PDCLIB_wint int
#define _PDCLIB_intptr long
#define _PDCLIB_INTPTR LONG
_PDCLIB_intmax rem;
};
-/* <time.h>: time_t
- * The C standard doesn't define what representation of time is stored in
+/* <time.h>: time_t
+ * The C standard doesn't define what representation of time is stored in
* time_t when returned by time() , but POSIX defines it to be seconds since the
- * UNIX epoch and most appplications expect that.
+ * UNIX epoch and most appplications expect that.
*
- * time_t is also used as the tv_sec member of struct timespec, which *is*
+ * time_t is also used as the tv_sec member of struct timespec, which *is*
* defined as a linear count of seconds.
*
* time_t is defined as a "real type", so may be a floating point type, but with
* the presence of the nanosecond accurate struct timespec, and with the lack of
- * any functions for manipulating more accurate values of time_t, this is
+ * any functions for manipulating more accurate values of time_t, this is
* probably not useful.
*/
-#define _PDCLIB_time long
+#define _PDCLIB_time long
/* <time.h>: clock_t
*
* A count of "clock ticks", where the length of a clock tick is unspecified by
- * the standard. The implementation is required to provide a macro,
+ * the standard. The implementation is required to provide a macro,
* CLOCKS_PER_SEC, which is the number of "clock ticks" which corresponds to one
* second.
*
* clock_t may be any real type (i.e. integral or floating), and its type on
- * various systems differs.
+ * various systems differs.
*
* On XSI systems, CLOCKS_PER_SEC must be defined to 1000000
*/
*
* The TIME_UTC parameter is passed to the timespec_get function in order to get
* the system time in UTC since an implementation defined epoch (not necessarily
- * the same as that used for time_t). That said, on POSIX the obvious
- * implementation of timespec_get for TIME_UTC is to wrap
+ * the same as that used for time_t). That said, on POSIX the obvious
+ * implementation of timespec_get for TIME_UTC is to wrap
* clock_gettime(CLOCK_REALTIME, ...), which is defined as time in UTC since the
* same epoch.
*
most compilers.
*/
#ifdef __GNUC__
- #define _PDCLIB_offsetof( type, member ) __builtin_offsetof( type, member )
+#define _PDCLIB_offsetof( type, member ) __builtin_offsetof( type, member )
#else
- #define _PDCLIB_offsetof( type, member ) ( (size_t) &( ( (type *) 0 )->member ) )
+#define _PDCLIB_offsetof( type, member ) ( (size_t) &( ( (type *) 0 )->member ) )
#endif
/* Variable Length Parameter List Handling (<stdarg.h>)
*/
#ifdef __GNUC__
- typedef __builtin_va_list _PDCLIB_va_list;
- #define _PDCLIB_va_arg( ap, type ) (__builtin_va_arg( (ap), type ))
- #define _PDCLIB_va_copy( dest, src ) (__builtin_va_copy( (dest), (src) ))
- #define _PDCLIB_va_end( ap ) (__builtin_va_end( ap ) )
- #define _PDCLIB_va_start( ap, parmN ) (__builtin_va_start( (ap), (parmN) ))
+typedef __builtin_va_list _PDCLIB_va_list;
+#define _PDCLIB_va_arg( ap, type ) (__builtin_va_arg( (ap), type ))
+#define _PDCLIB_va_copy( dest, src ) (__builtin_va_copy( (dest), (src) ))
+#define _PDCLIB_va_end( ap ) (__builtin_va_end( ap ) )
+#define _PDCLIB_va_start( ap, parmN ) (__builtin_va_start( (ap), (parmN) ))
#elif (defined(__i386__) || defined(__i386) || defined(_M_IX86)) && !(defined(__amd64__) || defined(__x86_64__) || defined(_M_AMD64))
- /* Internal helper macro. va_round is not part of <stdarg.h>. */
- #define _PDCLIB_va_round( type ) ( (sizeof(type) + sizeof(void *) - 1) & ~(sizeof(void *) - 1) )
-
- typedef char * _PDCLIB_va_list;
- #define _PDCLIB_va_arg( ap, type ) ( (ap) += (_PDCLIB_va_round(type)), ( *(type*) ( (ap) - (_PDCLIB_va_round(type)) ) ) )
- #define _PDCLIB_va_copy( dest, src ) ( (dest) = (src), (void)0 )
- #define _PDCLIB_va_end( ap ) ( (ap) = (void *)0, (void)0 )
- #define _PDCLIB_va_start( ap, parmN ) ( (ap) = (char *) &parmN + ( _PDCLIB_va_round(parmN) ), (void)0 )
+/* Internal helper macro. va_round is not part of <stdarg.h>. */
+#define _PDCLIB_va_round( type ) ( (sizeof(type) + sizeof(void *) - 1) & ~(sizeof(void *) - 1) )
+typedef char * _PDCLIB_va_list;
+#define _PDCLIB_va_arg( ap, type ) ( (ap) += (_PDCLIB_va_round(type)), ( *(type*) ( (ap) - (_PDCLIB_va_round(type)) ) ) )
+#define _PDCLIB_va_copy( dest, src ) ( (dest) = (src), (void)0 )
+#define _PDCLIB_va_end( ap ) ( (ap) = (void *)0, (void)0 )
+#define _PDCLIB_va_start( ap, parmN ) ( (ap) = (char *) &parmN + ( _PDCLIB_va_round(parmN) ), (void)0 )
#else
- #error Compiler/Architecture support please
+#error Compiler/Architecture support please
#endif
/* -------------------------------------------------------------------------- */
/* Locale --------------------------------------------------------------------*/
-/* Locale method. See _PDCLIB_locale.h */
+/* Locale method. See _PDCLIB_locale.h. If undefined, POSIX per-thread locales
+ will be disabled.
+*/
#define _PDCLIB_LOCALE_METHOD _PDCLIB_LOCALE_METHOD_TSS
+/* wchar_t encoding */
+#define _PDCLIB_WCHAR_ENCODING _PDCLIB_WCHAR_ENCODING_UCS4
+
/* I/O ---------------------------------------------------------------------- */
/* The default size for file buffers. Must be at least 256. */
*/
#define _PDCLIB_UNGETCBUFSIZE 1
+/* errno -------------------------------------------------------------------- */
+
+/* These are the values that _PDCLIB_errno can be set to by the library.
+
+ By keeping PDCLib's errno in the _PDCLIB_* namespace, the library is capable
+ to "translate" between errno values used by the hosting operating system and
+ those used and passed out by the library.
+
+ Example: In the example platform, the remove() function uses the unlink()
+ system call as backend. Linux sets its errno to EISDIR if you try to unlink()
+ a directory, but POSIX demands EPERM. Within the remove() function, you can
+ catch the 'errno == EISDIR', and set '_PDCLIB_errno = _PDCLIB_EPERM'. Anyone
+ using PDCLib's <errno.h> will "see" EPERM instead of EISDIR (the _PDCLIB_*
+ prefix removed by <errno.h> mechanics).
+
+ If you do not want that kind of translation, you might want to "match" the
+ values used by PDCLib with those used by the host OS, as to avoid confusion.
+
+ The C standard only defines three distinct errno values: ERANGE, EDOM, and
+ EILSEQ. The standard leaves it up to "the implementation" whether there are
+ any more beyond those three.
+
+ However, C++11 introduced the whole list of POSIX errno values into the
+ standard, so PDCLib might as well define those as well.
+
+ Sometimes the standard says to set errno to indicate an error, but does not
+ prescribe a value. We will use a value from the following list. If POSIX
+ defines a value, we use that; otherwise, we use as seems suitable.
+*/
+
+/* These values were taken from Linux, gcc 4.8. */
+#define _PDCLIB_E2BIG 7
+#define _PDCLIB_EACCES 13
+#define _PDCLIB_EADDRINUSE 98
+#define _PDCLIB_EADDRNOTAVAIL 99
+#define _PDCLIB_EAFNOSUPPORT 97
+#define _PDCLIB_EAGAIN 11
+#define _PDCLIB_EALREADY 114
+#define _PDCLIB_EBADF 9
+#define _PDCLIB_EBADMSG 74
+#define _PDCLIB_EBUSY 16
+#define _PDCLIB_ECANCELED 125
+#define _PDCLIB_ECHILD 10
+#define _PDCLIB_ECONNABORTED 103
+#define _PDCLIB_ECONNREFUSED 111
+#define _PDCLIB_ECONNRESET 104
+#define _PDCLIB_EDEADLK 35
+#define _PDCLIB_EDESTADDRREQ 89
+#define _PDCLIB_EDOM 33
+#define _PDCLIB_EEXIST 17
+#define _PDCLIB_EFAULT 14
+#define _PDCLIB_EFBIG 27
+#define _PDCLIB_EHOSTUNREACH 113
+#define _PDCLIB_EIDRM 43
+#define _PDCLIB_EILSEQ 84
+#define _PDCLIB_EINPROGRESS 115
+#define _PDCLIB_EINTR 4
+#define _PDCLIB_EINVAL 22
+#define _PDCLIB_EIO 5
+#define _PDCLIB_EISCONN 106
+#define _PDCLIB_EISDIR 21
+#define _PDCLIB_ELOOP 40
+#define _PDCLIB_EMFILE 24
+#define _PDCLIB_EMLINK 31
+#define _PDCLIB_EMSGSIZE 90
+#define _PDCLIB_ENAMETOOLONG 36
+#define _PDCLIB_ENETDOWN 100
+#define _PDCLIB_ENETRESET 102
+#define _PDCLIB_ENETUNREACH 101
+#define _PDCLIB_ENFILE 23
+#define _PDCLIB_ENOBUFS 105
+#define _PDCLIB_ENODATA 61
+#define _PDCLIB_ENODEV 19
+#define _PDCLIB_ENOENT 2
+#define _PDCLIB_ENOEXEC 8
+#define _PDCLIB_ENOLCK 37
+#define _PDCLIB_ENOLINK 67
+#define _PDCLIB_ENOMEM 12
+#define _PDCLIB_ENOMSG 42
+#define _PDCLIB_ENOPROTOOPT 92
+#define _PDCLIB_ENOSPC 28
+#define _PDCLIB_ENOSR 63
+#define _PDCLIB_ENOSTR 60
+#define _PDCLIB_ENOSYS 38
+#define _PDCLIB_ENOTCONN 107
+#define _PDCLIB_ENOTDIR 20
+#define _PDCLIB_ENOTEMPTY 39
+#define _PDCLIB_ENOTRECOVERABLE 131
+#define _PDCLIB_ENOTSOCK 88
+#define _PDCLIB_ENOTSUP 95
+#define _PDCLIB_ENOTTY 25
+#define _PDCLIB_ENXIO 6
+#define _PDCLIB_EOPNOTSUPP 95
+#define _PDCLIB_EOVERFLOW 75
+#define _PDCLIB_EOWNERDEAD 130
+#define _PDCLIB_EPERM 1
+#define _PDCLIB_EPIPE 32
+#define _PDCLIB_EPROTO 71
+#define _PDCLIB_EPROTONOSUPPORT 93
+#define _PDCLIB_EPROTOTYPE 91
+#define _PDCLIB_ERANGE 34
+#define _PDCLIB_EROFS 30
+#define _PDCLIB_ESPIPE 29
+#define _PDCLIB_ESRCH 3
+#define _PDCLIB_ETIME 62
+#define _PDCLIB_ETIMEDOUT 110
+#define _PDCLIB_ETXTBSY 26
+#define _PDCLIB_EWOULDBLOCK 11
+#define _PDCLIB_EXDEV 18
+
+/* This is used to set the size of the array in struct lconv (<locale.h>) */
+/* holding the error messages for the strerror() and perror() fuctions. If */
+/* you change this value because you are using additional errno values, you */
+/* *HAVE* to provide appropriate error messages for *ALL* locales. */
+/* Needs to be one higher than the highest errno value above. */
+#define _PDCLIB_ERRNO_MAX 132
+
#endif
projects / pdclib / blobdiff