diff options
Diffstat (limited to 'ports/sysdeps/unix/sysv/linux/mips/pread.c')
-rw-r--r-- | ports/sysdeps/unix/sysv/linux/mips/pread.c | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/ports/sysdeps/unix/sysv/linux/mips/pread.c b/ports/sysdeps/unix/sysv/linux/mips/pread.c new file mode 100644 index 0000000000..a868130ea1 --- /dev/null +++ b/ports/sysdeps/unix/sysv/linux/mips/pread.c @@ -0,0 +1,81 @@ +/* Copyright (C) 1997-2012 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + <http://www.gnu.org/licenses/>. */ + +#include <assert.h> +#include <errno.h> +#ifndef NO_SGIDEFS_H +#include <sgidefs.h> +#endif +#include <unistd.h> +#include <endian.h> + +#include <sysdep-cancel.h> +#include <sys/syscall.h> +#include <bp-checks.h> + +#include <kernel-features.h> + +#ifdef __NR_pread64 /* Newer kernels renamed but it's the same. */ +# ifdef __NR_pread +# error "__NR_pread and __NR_pread64 both defined???" +# endif +# define __NR_pread __NR_pread64 +#endif + + +ssize_t +__libc_pread (fd, buf, count, offset) + int fd; + void *buf; + size_t count; + off_t offset; +{ + ssize_t result; + +#if _MIPS_SIM != _ABI64 + assert (sizeof (offset) == 4); +#endif + + if (SINGLE_THREAD_P) + { +#if _MIPS_SIM == _ABIN32 || _MIPS_SIM == _ABI64 + result = INLINE_SYSCALL (pread, 4, fd, CHECK_N (buf, count), count, + offset); +#else + result = INLINE_SYSCALL (pread, 6, fd, CHECK_N (buf, count), count, 0, + __LONG_LONG_PAIR (offset >> 31, offset)); +#endif + return result; + } + + int oldtype = LIBC_CANCEL_ASYNC (); + +#if _MIPS_SIM == _ABIN32 || _MIPS_SIM == _ABI64 + result = INLINE_SYSCALL (pread, 4, fd, CHECK_N (buf, count), count, offset); +#else + result = INLINE_SYSCALL (pread, 6, fd, CHECK_N (buf, count), count, 0, + __LONG_LONG_PAIR (offset >> 31, offset)); +#endif + + LIBC_CANCEL_RESET (oldtype); + + return result; +} + +strong_alias (__libc_pread, __pread) +weak_alias (__libc_pread, pread) |