From 8daa5a586a8daef3af754328ee84d4079750dc56 Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Thu, 31 May 2007 08:22:35 +0000 Subject: Atsushi Nemoto writes: Current MIPS readahead(), posix_fadvise(), posix_fadvise64() do not match with kernel on all ABIs. On O32 ABI, a padding is needed before a long long argument. On N32/N64, a long long argument should be passed via a single register. --- libc/sysdeps/linux/mips/Makefile.arch | 3 ++- libc/sysdeps/linux/mips/posix_fadvise.c | 39 ++++++++++++++++++++++++++++ libc/sysdeps/linux/mips/posix_fadvise64.c | 43 +++++++++++++++++++++++++++++++ libc/sysdeps/linux/mips/readahead.c | 38 +++++++++++++++++++++++++++ 4 files changed, 122 insertions(+), 1 deletion(-) create mode 100644 libc/sysdeps/linux/mips/posix_fadvise.c create mode 100644 libc/sysdeps/linux/mips/posix_fadvise64.c create mode 100644 libc/sysdeps/linux/mips/readahead.c (limited to 'libc/sysdeps') diff --git a/libc/sysdeps/linux/mips/Makefile.arch b/libc/sysdeps/linux/mips/Makefile.arch index c79aee8ca..da5ca1e0f 100644 --- a/libc/sysdeps/linux/mips/Makefile.arch +++ b/libc/sysdeps/linux/mips/Makefile.arch @@ -7,7 +7,8 @@ CSRC := \ __longjmp.c brk.c setjmp_aux.c mmap.c __syscall_error.c \ - cacheflush.c pread_write.c sysmips.c _test_and_set.c sigaction.c + cacheflush.c pread_write.c sysmips.c _test_and_set.c sigaction.c \ + readahead.c posix_fadvise.c posix_fadvise64.c SSRC := bsd-_setjmp.S bsd-setjmp.S setjmp.S clone.S syscall.S pipe.S diff --git a/libc/sysdeps/linux/mips/posix_fadvise.c b/libc/sysdeps/linux/mips/posix_fadvise.c new file mode 100644 index 000000000..8546d96ba --- /dev/null +++ b/libc/sysdeps/linux/mips/posix_fadvise.c @@ -0,0 +1,39 @@ +/* vi: set sw=4 ts=4: */ +/* + * posix_fadvise() for MIPS uClibc + * http://www.opengroup.org/onlinepubs/009695399/functions/posix_fadvise.html + * + * Copyright (C) 2000-2006 Erik Andersen + * + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +int posix_fadvise(int fd, off_t offset, off_t len, int advice) +{ +/* MIPS kernel only has NR_fadvise64 which acts as NR_fadvise64_64 */ +#ifdef __NR_fadvise64 + INTERNAL_SYSCALL_DECL(err); +# if _MIPS_SIM == _ABIO32 + int ret = INTERNAL_SYSCALL(fadvise64, err, 7, fd, 0, + __LONG_LONG_PAIR ((long) (offset >> 31), (long) offset), + __LONG_LONG_PAIR ((long) (len >> 31), (long) len), + advice); +# else /* N32 || N64 */ + int ret = INTERNAL_SYSCALL(fadvise64, err, 4, fd, offset, len, advice); +# endif + if (INTERNAL_SYSCALL_ERROR_P (ret, err)) + return INTERNAL_SYSCALL_ERRNO (ret, err); + return 0; +#else + return ENOSYS; +#endif +} diff --git a/libc/sysdeps/linux/mips/posix_fadvise64.c b/libc/sysdeps/linux/mips/posix_fadvise64.c new file mode 100644 index 000000000..d9b89d123 --- /dev/null +++ b/libc/sysdeps/linux/mips/posix_fadvise64.c @@ -0,0 +1,43 @@ +/* vi: set sw=4 ts=4: */ +/* + * posix_fadvise64() for MIPS uClibc + * http://www.opengroup.org/onlinepubs/009695399/functions/posix_fadvise.html + * + * Copyright (C) 2000-2006 Erik Andersen + * + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#ifdef __UCLIBC_HAS_LFS__ + +int posix_fadvise64(int fd, __off64_t offset, __off64_t len, int advice) +{ +/* MIPS kernel only has NR_fadvise64 which acts as NR_fadvise64_64 */ +#ifdef __NR_fadvise64 + INTERNAL_SYSCALL_DECL(err); +# if _MIPS_SIM == _MIPS_SIM_ABI32 + int ret = INTERNAL_SYSCALL(fadvise64, err, 7, fd, 0, + __LONG_LONG_PAIR ((long) (offset >> 32), (long) offset), + __LONG_LONG_PAIR ((long) (len >> 32), (long) len), + advice); +# else /* N32 || N64 */ + int ret = INTERNAL_SYSCALL(fadvise64, err, 4, fd, offset, len, advice); +# endif + if (INTERNAL_SYSCALL_ERROR_P (ret, err)) + return INTERNAL_SYSCALL_ERRNO (ret, err); + return 0; +#else + return ENOSYS; +#endif +} + +#endif /* __UCLIBC_HAS_LFS__ */ diff --git a/libc/sysdeps/linux/mips/readahead.c b/libc/sysdeps/linux/mips/readahead.c new file mode 100644 index 000000000..8fe75fd9e --- /dev/null +++ b/libc/sysdeps/linux/mips/readahead.c @@ -0,0 +1,38 @@ +/* Provide kernel hint to read ahead. + Copyright (C) 2002, 2003, 2004 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 + 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include +#include +#include +#include + +#ifdef __NR_readahead + +ssize_t readahead(int fd, off64_t offset, size_t count) +{ +# if _MIPS_SIM == _ABIO32 + return INLINE_SYSCALL (readahead, 5, fd, 0, + __LONG_LONG_PAIR ((off_t) (offset >> 32), (off_t) offset), + count); +# else /* N32 || N64 */ + return INLINE_SYSCALL (readahead, 3, fd, offset, count); +# endif +} + +#endif -- cgit v1.2.3