diff options
Diffstat (limited to 'libc/sysdeps/linux/mips/pread_write.c')
| -rw-r--r-- | libc/sysdeps/linux/mips/pread_write.c | 251 |
1 files changed, 72 insertions, 179 deletions
diff --git a/libc/sysdeps/linux/mips/pread_write.c b/libc/sysdeps/linux/mips/pread_write.c index 302dcd64f..553864531 100644 --- a/libc/sysdeps/linux/mips/pread_write.c +++ b/libc/sysdeps/linux/mips/pread_write.c @@ -1,56 +1,23 @@ -/* vi: set sw=4 ts=4: +/* vi: set sw=4 ts=4: */ +/* + * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org> * - * Copyright (C) 2006 by Steven J. Hill <sjhill@realitydiluted.com> - * Copyright (C) 2002-2005 by Erik Andersen <andersen@uclibc.org> - * - * New version based heavily on the files: - * sysdeps/linux/sysv/linux/mips/pread.c, - * sysdeps/linux/sysv/linux/mips/pread64.c, - * sysdeps/linux/sysv/linux/mips/pwrite.c, - * sysdeps/linux/sysv/linux/mips/pwrite64.c - * from GNU libc 2.3.5, but with minor rework. - * - * Originally based in part on the files: - * sysdeps/unix/sysv/linux/pwrite.c, - * sysdeps/unix/sysv/linux/pread.c, - * sysdeps/posix/pread.c, + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ +/* + * Based in part on the files + * ./sysdeps/unix/sysv/linux/pwrite.c, + * ./sysdeps/unix/sysv/linux/pread.c, + * sysdeps/posix/pread.c * sysdeps/posix/pwrite.c - * from GNU libc 2.2.5, but reworked considerably. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU Library General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * This program 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 Library General Public License - * for more details. - * - * You should have received a copy of the GNU Library General Public License - * along with this program; if not, write to the Free Software Foundation, - * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * from GNU libc 2.2.5, but reworked considerably... */ -#define _LARGEFILE64_SOURCE -#include <features.h> -#undef __OPTIMIZE__ -/* We absolutely do _NOT_ want interfaces silently - * * * renamed under us or very bad things will happen... */ -#ifdef __USE_FILE_OFFSET64 -# undef __USE_FILE_OFFSET64 -#endif - - -#include <errno.h> -#include <sys/types.h> #include <sys/syscall.h> #include <unistd.h> #include <stdint.h> -#include <assert.h> -#ifdef __UCLIBC_HAS_THREADS_NATIVE__ -#include <sysdep-cancel.h> -#endif +#include <endian.h> +#include <sgidefs.h> #ifdef __NR_pread64 /* Newer kernels renamed but it's the same. */ # ifdef __NR_pread @@ -59,79 +26,48 @@ # define __NR_pread __NR_pread64 #endif -#ifdef __NR_pread -ssize_t -__libc_pread (int fd, void *buf, size_t count, off_t offset) -{ - ssize_t result; - -#if _MIPS_SIM != _ABI64 - assert (sizeof (offset) == 4); +extern __typeof(pread) __libc_pread; +extern __typeof(pwrite) __libc_pwrite; +#ifdef __UCLIBC_HAS_LFS__ +extern __typeof(pread64) __libc_pread64; +extern __typeof(pwrite64) __libc_pwrite64; #endif - if (SINGLE_THREAD_P) - { - /* First try the syscall. */ -#if _MIPS_SIM == _ABIN32 || _MIPS_SIM == _ABI64 - result = INLINE_SYSCALL (pread, 4, fd, buf, count, offset); -#else - result = INLINE_SYSCALL (pread, 6, fd, buf, count, 0, - __LONG_LONG_PAIR (offset >> 31, offset)); -#endif - return result; - } +#include <bits/kernel_types.h> - int oldtype = LIBC_CANCEL_ASYNC (); - - /* First try the syscall. */ -#if _MIPS_SIM == _ABIN32 || _MIPS_SIM == _ABI64 - result = INLINE_SYSCALL (pread, 4, fd, buf,, count, offset); -#else - result = INLINE_SYSCALL (pread, 6, fd, buf, count, 0, - __LONG_LONG_PAIR (offset >> 31, offset)); -#endif - LIBC_CANCEL_RESET (oldtype); +#ifdef __NR_pread - return result; -} +# if _MIPS_SIM == _MIPS_SIM_ABI64 +# define __NR___libc_pread __NR_pread +_syscall4(ssize_t, __libc_pread, int, fd, void *, buf, size_t, count, off_t, offset); weak_alias (__libc_pread, pread) - -#if defined __UCLIBC_HAS_LFS__ -ssize_t -__libc_pread64 (int fd, void *buf, size_t count, off64_t offset) +# ifdef __UCLIBC_HAS_LFS__ +# define __NR___libc_pread64 __NR_pread +_syscall4(ssize_t, __libc_pread64, int, fd, void *, buf, size_t, count, off64_t, offset); +weak_alias (__libc_pread64, pread64) +# endif /* __UCLIBC_HAS_LFS__ */ +# else /* O32 || N32 */ +# define __NR___syscall_pread __NR_pread +static inline _syscall6(ssize_t, __syscall_pread, int, fd, void *, buf, + size_t, count, int, dummy, off_t, offset_hi, off_t, offset_lo); + +ssize_t __libc_pread(int fd, void *buf, size_t count, off_t offset) { - ssize_t result; - - if (SINGLE_THREAD_P) - { - /* First try the syscall. */ -#if _MIPS_SIM == _ABIN32 || _MIPS_SIM == _ABI64 - return INLINE_SYSCALL (pread, 4, fd, buf, count, offset); -#else - return INLINE_SYSCALL (pread, 6, fd, buf, count, 0, - __LONG_LONG_PAIR ((off_t) (offset >> 32), - (off_t) (offset & 0xffffffff))); -#endif - } - - int oldtype = LIBC_CANCEL_ASYNC (); - - /* First try the syscall. */ -#if _MIPS_SIM == _ABIN32 || _MIPS_SIM == _ABI64 - result = INLINE_SYSCALL (pread, 4, fd, buf, count, offset); -#else - result = INLINE_SYSCALL (pread, 6, fd, buf, count, 0, - __LONG_LONG_PAIR ((off_t) (offset >> 32), - (off_t) (offset & 0xffffffff))); -#endif - - LIBC_CANCEL_RESET (oldtype); + return(__syscall_pread(fd,buf,count,0,__LONG_LONG_PAIR(offset>>31,offset))); +} +weak_alias(__libc_pread,pread) - return result; +# ifdef __UCLIBC_HAS_LFS__ +ssize_t __libc_pread64(int fd, void *buf, size_t count, off64_t offset) +{ + uint32_t low = offset & 0xffffffff; + uint32_t high = offset >> 32; + return(__syscall_pread(fd, buf, count, 0, __LONG_LONG_PAIR (high, low))); } -weak_alias(__libc_pread64, pread64) -#endif /* __UCLIBC_HAS_LFS__ */ +weak_alias(__libc_pread64,pread64) +# endif /* __UCLIBC_HAS_LFS__ */ +# endif /* O32 || N32 */ #endif /* __NR_pread */ @@ -145,78 +81,35 @@ weak_alias(__libc_pread64, pread64) #endif #ifdef __NR_pwrite -ssize_t -__libc_pwrite (int fd, const void *buf, size_t count, off_t offset) -{ - ssize_t result; - -#if _MIPS_SIM != _ABI64 - assert (sizeof (offset) == 4); -#endif - - if (SINGLE_THREAD_P) - { - /* First try the syscall. */ -#if _MIPS_SIM == _ABIN32 || _MIPS_SIM == _ABI64 - result = INLINE_SYSCALL (pwrite, 4, fd, buf, count, offset); -#else - result = INLINE_SYSCALL (pwrite, 6, fd, buf, count, 0, - __LONG_LONG_PAIR (offset >> 31, offset)); -#endif - return result; - } - int oldtype = LIBC_CANCEL_ASYNC (); - - /* First try the syscall. */ -#if _MIPS_SIM == _ABIN32 || _MIPS_SIM == _ABI64 - result = INLINE_SYSCALL (pwrite, 4, fd, buf, count, offset); -#else - result = INLINE_SYSCALL (pwrite, 6, fd, buf, count, 0, - __LONG_LONG_PAIR (offset >> 31, offset)); -#endif - - LIBC_CANCEL_RESET (oldtype); - - return result; +# if _MIPS_SIM == _MIPS_SIM_ABI64 +# define __NR___libc_pwrite __NR_pwrite +_syscall4(ssize_t, __libc_pwrite, int, fd, const void *, buf, size_t, count, off_t, offset); +weak_alias (__libc_pwrite, pwrite) +# ifdef __UCLIBC_HAS_LFS__ +# define __NR___libc_pwrite64 __NR_pwrite +_syscall4(ssize_t, __libc_pwrite64, int, fd, const void *, buf, size_t, count, off64_t, offset); +weak_alias (__libc_pwrite64, pwrite64) +# endif /* __UCLIBC_HAS_LFS__ */ +# else /* O32 || N32 */ +# define __NR___syscall_pwrite __NR_pwrite +static inline _syscall6(ssize_t, __syscall_pwrite, int, fd, const void *, buf, + size_t, count, int, dummy, off_t, offset_hi, off_t, offset_lo); + +ssize_t __libc_pwrite(int fd, const void *buf, size_t count, off_t offset) +{ + return(__syscall_pwrite(fd,buf,count,0,__LONG_LONG_PAIR(offset>>31,offset))); } -weak_alias(__libc_pwrite, pwrite) +weak_alias(__libc_pwrite,pwrite) -#if defined __UCLIBC_HAS_LFS__ -ssize_t -__libc_pwrite64 (int fd, const void *buf, size_t count, off64_t offset) +# ifdef __UCLIBC_HAS_LFS__ +ssize_t __libc_pwrite64(int fd, const void *buf, size_t count, off64_t offset) { - ssize_t result; - - if (SINGLE_THREAD_P) - { - /* First try the syscall. */ -#if _MIPS_SIM == _ABIN32 || _MIPS_SIM == _ABI64 - result = INLINE_SYSCALL (pwrite, 4, fd, buf, count, offset); -#else - result = INLINE_SYSCALL (pwrite, 6, fd, buf, count, 0, - __LONG_LONG_PAIR ((off_t) (offset >> 32), - (off_t) (offset & 0xffffffff))); -#endif - return result; - } - - int oldtype = LIBC_CANCEL_ASYNC (); - - /* First try the syscall. */ -#if _MIPS_SIM == _ABIN32 || _MIPS_SIM == _ABI64 - result = INLINE_SYSCALL (pwrite, 4, fd, buf, count, offset); -#else - result = INLINE_SYSCALL (pwrite, 6, fd, buf, count, 0, - __LONG_LONG_PAIR ((off_t) (offset >> 32), - (off_t) (offset & 0xffffffff))); -#endif - - LIBC_CANCEL_RESET (oldtype); - - return result; + uint32_t low = offset & 0xffffffff; + uint32_t high = offset >> 32; + return(__syscall_pwrite(fd, buf, count, 0, __LONG_LONG_PAIR (high, low))); } -weak_alias(__libc_pwrite64, pwrite64) -#endif /* __UCLIBC_HAS_LFS__ */ - +weak_alias(__libc_pwrite64,pwrite64) +# endif /* __UCLIBC_HAS_LFS__ */ +# endif /* O32 || N32 */ #endif /* __NR_pwrite */ |