X-Git-Url: https://pd.if.org/git/?p=pdclib;a=blobdiff_plain;f=platform%2Fposix%2Finternals%2F_PDCLIB_config.h;h=3744a59b4decbd61144c822c366e5f8a4cba9cfe;hp=576b347c253df2a2984c38426dca97b0f0c0c197;hb=ea66319bf240c51e4f33caf868e1774e32ef19d6;hpb=68530b0da9e164ca1f36374be11b03f2f6cd0c9f diff --git a/platform/posix/internals/_PDCLIB_config.h b/platform/posix/internals/_PDCLIB_config.h index 576b347..3744a59 100644 --- a/platform/posix/internals/_PDCLIB_config.h +++ b/platform/posix/internals/_PDCLIB_config.h @@ -27,14 +27,6 @@ /* 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 () 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 */ /* -------------------------------------------------------------------------- */ @@ -47,7 +39,7 @@ /* 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. */ @@ -56,9 +48,9 @@ #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 @@ -121,9 +113,15 @@ struct _PDCLIB_lldiv_t #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, */ @@ -131,11 +129,20 @@ struct _PDCLIB_lldiv_t /* 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.) @@ -143,16 +150,37 @@ struct _PDCLIB_lldiv_t #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 @@ -173,30 +201,30 @@ struct _PDCLIB_imaxdiv_t _PDCLIB_intmax rem; }; -/* : time_t - * The C standard doesn't define what representation of time is stored in +/* : 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 /* : 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 */ @@ -207,8 +235,8 @@ struct _PDCLIB_imaxdiv_t * * 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. * @@ -270,9 +298,9 @@ struct _PDCLIB_imaxdiv_t 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 () @@ -282,22 +310,21 @@ struct _PDCLIB_imaxdiv_t */ #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 . */ - #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 . */ +#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 /* -------------------------------------------------------------------------- */ @@ -324,7 +351,9 @@ struct _PDCLIB_imaxdiv_t /* 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 */ @@ -365,4 +394,121 @@ struct _PDCLIB_imaxdiv_t */ #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 will "see" EPERM instead of EISDIR (the _PDCLIB_* + prefix removed by 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 () */ +/* 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