diff options
Diffstat (limited to 'bits/types.h')
| -rw-r--r-- | bits/types.h | 199 |
1 files changed, 130 insertions, 69 deletions
diff --git a/bits/types.h b/bits/types.h index f63a0f8b74..cb2802efe3 100644 --- a/bits/types.h +++ b/bits/types.h @@ -1,4 +1,5 @@ -/* Copyright (C) 1991,1992,94-1999,2000,2001 Free Software Foundation, Inc. +/* bits/types.h -- definitions of __*_t types underlying *_t types. + Copyright (C) 2002 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -24,18 +25,40 @@ #define _BITS_TYPES_H 1 #include <features.h> +#include <bits/wordsize.h> #define __need_size_t #include <stddef.h> /* Convenience types. */ typedef unsigned char __u_char; -typedef unsigned short __u_short; +typedef unsigned short int __u_short; typedef unsigned int __u_int; -typedef unsigned long __u_long; -#ifdef __GNUC__ -typedef unsigned long long int __u_quad_t; -typedef long long int __quad_t; +typedef unsigned long int __u_long; + +/* Fixed-size types, underlying types depend on word size and compiler. */ +typedef signed char __int8_t; +typedef unsigned char __uint8_t; +typedef signed short int __int16_t; +typedef unsigned short int __uint16_t; +typedef signed int __int32_t; +typedef unsigned int __uint32_t; +#if __WORDSIZE == 64 +typedef signed long int __int64_t; +typedef unsigned long int __uint64_t; +#elif defined __GLIBC_HAVE_LONG_LONG +__extension__ typedef signed long long int __int64_t; +__extension__ typedef unsigned long long int __uint64_t; +#endif + +/* quad_t is also 64 bits, but is traditionally defined as `long long' + even when `long' is also 64 bits. */ +#ifdef __GLIBC_HAVE_LONG_LONG +__extension__ typedef long long int __quad_t; +__extension__ typedef unsigned long long int __u_quad_t; +#elif __WORDSIZE == 64 +typedef long int __quad_t; +typedef unsigned long int __u_quad_t; #else typedef struct { @@ -46,86 +69,124 @@ typedef struct __u_long __val[2]; } __u_quad_t; #endif -typedef signed char __int8_t; -typedef unsigned char __uint8_t; -typedef signed short int __int16_t; -typedef unsigned short int __uint16_t; -typedef signed int __int32_t; -typedef unsigned int __uint32_t; -#ifdef __GNUC__ -typedef signed long long int __int64_t; -typedef unsigned long long int __uint64_t; -#endif -typedef __quad_t *__qaddr_t; -typedef int __dev_t; /* Type of device numbers. */ -typedef unsigned int __uid_t; /* Type of user identifications. */ -typedef unsigned int __gid_t; /* Type of group identifications. */ -typedef unsigned int __ino_t; /* Type of file serial numbers. */ -typedef __quad_t __ino64_t; /* Type of file serial numbers (LFS). */ -typedef unsigned int __mode_t; /* Type of file attribute bitmasks. */ -typedef unsigned short int __nlink_t; /* Type of file link counts. */ -typedef long int __off_t; /* Type of file sizes and offsets. */ -typedef __quad_t __loff_t; /* Type of file sizes and offsets. */ -typedef __loff_t __off64_t; /* Type of file sizes and offsets (LFS). */ -typedef int __pid_t; /* Type of process identifications. */ -typedef int __ssize_t; /* Type of a byte count, or error. */ -typedef __u_quad_t __fsid_t; /* Type of file system IDs. */ -typedef long int __clock_t; /* Type of CPU usage counts. */ -typedef long int __rlim_t; /* Type for resource measurement. */ -typedef __quad_t __rlim64_t; /* Type for resource measurement (LFS). */ -typedef unsigned int __id_t; /* General type for IDs. */ - -/* Everythin' else. */ -typedef long int __daddr_t; /* The type of a disk address. */ -typedef char *__caddr_t; -typedef long int __time_t; -typedef unsigned int __useconds_t; -typedef long int __suseconds_t; -typedef long int __swblk_t; /* Type of a swap block maybe? */ -typedef long int __key_t; /* Type of an IPC key */ - + +/* The machine-dependent file <bits/typesizes.h> defines __*_T_TYPE + macros for each of the OS types we define below. The definitions + of those macros must use the following macros for underlying types. + We define __S<SIZE>_TYPE and __U<SIZE>_TYPE for the signed and unsigned + variants of each of the following integer types on this machine. + + 16 -- "natural" 16-bit type (always short) + 32 -- "natural" 32-bit type (always int) + 64 -- "natural" 64-bit type (long or long long) + LONG32 -- 32-bit type, traditionally long + QUAD -- 64-bit type, always long long + WORD -- natural type of __WORDSIZE bits (int or long) + LONGWORD -- type of __WORDSIZE bits, traditionally long + + We distinguish WORD/LONGWORD, 32/LONG32, and 64/QUAD so that the + conventional uses of `long' or `long long' type modifiers match the + types we define, even when a less-adorned type would be the same size. + This matters for (somewhat) portably writing printf/scanf formats for + these types, where using the appropriate l or ll format modifiers can + make the typedefs and the formats match up across all GNU platforms. If + we used `long' when it's 64 bits where `long long' is expected, then the + compiler would warn about the formats not matching the argument types, + and the programmer changing them to shut up the compiler would break the + program's portability. + + Here we assume what is presently the case in all the GCC configurations + we support: long long is always 64 bits, long is always word/address size, + and int is always 32 bits. */ + +#define __S16_TYPE short int +#define __U16_TYPE unsigned short int +#define __S32_TYPE int +#define __U32_TYPE unsigned int +#define __SLONGWORD_TYPE long int +#define __ULONGWORD_TYPE unsigned long int +#define __SQUAD_TYPE long long int +#define __UQUAD_TYPE unsigned long long int +#if __WORDSIZE == 32 +# define __SWORD_TYPE int +# define __UWORD_TYPE unsigned int +# define __SLONG32_TYPE long int +# define __ULONG32_TYPE unsigned long int +# define __S64_TYPE __quad_t +# define __U64_TYPE __u_quad_t +#elif __WORDSIZE == 64 +# define __SWORD_TYPE long int +# define __UWORD_TYPE unsigned long int +# define __SLONG32_TYPE int +# define __ULONG32_TYPE unsigned int +# define __S64_TYPE long int +# define __U64_TYPE unsigned long int +#else +# error +#endif +#include <bits/typesizes.h> /* Defines __*_T_TYPE macros. */ + + +typedef __DEV_T_TYPE __dev_t; /* Type of device numbers. */ +typedef __UID_T_TYPE __uid_t; /* Type of user identifications. */ +typedef __GID_T_TYPE __gid_t; /* Type of group identifications. */ +typedef __INO_T_TYPE __ino_t; /* Type of file serial numbers. */ +typedef __INO64_T_TYPE __ino64_t; /* Type of file serial numbers (LFS). */ +typedef __MODE_T_TYPE __mode_t; /* Type of file attribute bitmasks. */ +typedef __NLINK_T_TYPE __nlink_t; /* Type of file link counts. */ +typedef __OFF_T_TYPE __off_t; /* Type of file sizes and offsets. */ +typedef __OFF64_T_TYPE __off64_t; /* Type of file sizes and offsets (LFS). */ +typedef __PID_T_TYPE __pid_t; /* Type of process identifications. */ +typedef __FSID_T_TYPE __fsid_t; /* Type of file system IDs. */ +typedef __CLOCK_T_TYPE __clock_t; /* Type of CPU usage counts. */ +typedef __RLIM_T_TYPE __rlim_t; /* Type for resource measurement. */ +typedef __RLIM64_T_TYPE __rlim64_t; /* Type for resource measurement (LFS). */ +typedef __ID_T_TYPE __id_t; /* General type for IDs. */ +typedef __TIME_T_TYPE __time_t; /* Seconds since the Epoch. */ +typedef __USECONDS_T_TYPE __useconds_t; /* Count of microseconds. */ +typedef __SUSECONDS_T_TYPE __suseconds_t; /* Signed count of microseconds. */ + +typedef __DADDR_T_TYPE __daddr_t; /* The type of a disk address. */ +typedef __SWBLK_T_TYPE __swblk_t; /* Type of a swap block maybe? */ +typedef __KEY_T_TYPE __key_t; /* Type of an IPC key */ /* Clock ID used in clock and timer functions. */ -typedef int __clockid_t; +typedef __CLOCKID_T_TYPE __clockid_t; /* Timer ID returned by `timer_create'. */ -typedef int __timer_t; - - -/* Number of descriptors that can fit in an `fd_set'. */ -#define __FD_SETSIZE 256 - - -/* XXX Used in `struct shmid_ds'. */ -typedef unsigned short int __ipc_pid_t; - +typedef __TIMER_T_TYPE __timer_t; /* Type to represent block size. */ -typedef unsigned int __blksize_t; +typedef __BLKSIZE_T_TYPE __blksize_t; /* Types from the Large File Support interface. */ -/* Type to count number os disk blocks. */ -typedef long int __blkcnt_t; -typedef __quad_t __blkcnt64_t; +/* Type to count number of disk blocks. */ +typedef __BLKCNT_T_TYPE __blkcnt_t; +typedef __BLKCNT64_T_TYPE __blkcnt64_t; /* Type to count file system blocks. */ -typedef unsigned int __fsblkcnt_t; -typedef __u_quad_t __fsblkcnt64_t; +typedef __FSBLKCNT_T_TYPE __fsblkcnt_t; +typedef __FSBLKCNT64_T_TYPE __fsblkcnt64_t; -/* Type to count file system inodes. */ -typedef unsigned long int __fsfilcnt_t; -typedef __u_quad_t __fsfilcnt64_t; +/* Type to count file system nodes. */ +typedef __FSFILCNT_T_TYPE __fsfilcnt_t; +typedef __FSFILCNT64_T_TYPE __fsfilcnt64_t; -/* Used in XTI. */ -typedef int __t_scalar_t; -typedef unsigned int __t_uscalar_t; + +/* These few don't really vary by system, they always correspond + to one of the other defined types. */ +typedef __SWORD_TYPE __ssize_t; /* Type of a byte count, or error. */ +typedef __off64_t __loff_t; /* Type of file sizes and offsets (LFS). */ +typedef __quad_t *__qaddr_t; +typedef char *__caddr_t; /* Duplicates info from stdint.h but this is used in unistd.h. */ -typedef long int __intptr_t; +typedef __SWORD_TYPE __intptr_t; /* Duplicate info from sys/socket.h. */ -typedef unsigned int __socklen_t; +typedef __U32_TYPE __socklen_t; + #endif /* bits/types.h */ |