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053cc7bbc8
unnecessarily. * sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_STAT64_SYSCALL, __ASSUME_TRUNCATE64_SYSCALL, __ASSUME_NEW_GETRLIMIT_SYSCALL): Define on powerpc for kernels >= 2.3.35. * sysdeps/unix/sysv/linux/powerpc/bits/resource.h: New file. * sysdeps/unix/sysv/linux/powerpc/ftruncate64.c: New file. * sysdeps/unix/sysv/linux/powerpc/getrlimit.c: New file. * sysdeps/unix/sysv/linux/powerpc/getrlimit64.c: New file. * sysdeps/unix/sysv/linux/powerpc/mmap64.c: New file. * sysdeps/unix/sysv/linux/powerpc/setrlimit.c: New file. * sysdeps/unix/sysv/linux/powerpc/setrlimit64.c: New file. * sysdeps/unix/sysv/linux/powerpc/syscalls.list: Add s_fstat64, s_ftruncate64, s_lstat64, s_mmap2, s_stat64, s_truncate64. * sysdeps/unix/sysv/linux/powerpc/truncate64.c: New file. * sysdeps/unix/sysv/linux/powerpc/Versions: New file. * sysdeps/unix/sysv/linux/powerpc/brk.S [!PIC]: Don't access __curbrk off the small data area register. Reported by Andrew Haley <aph@pasanda.cygnus.co.uk>. 2000-01-27 Geoff Keating <geoffk@cygnus.com> * csu/Makefile ($(objpfx)version-info.h): Don't use echo -n unnecessarily. * sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_STAT64_SYSCALL, __ASSUME_TRUNCATE64_SYSCALL, __ASSUME_NEW_GETRLIMIT_SYSCALL): Define on powerpc for kernels >= 2.3.35. * sysdeps/unix/sysv/linux/powerpc/bits/resource.h: New file. * sysdeps/unix/sysv/linux/powerpc/ftruncate64.c: New file. * sysdeps/unix/sysv/linux/powerpc/getrlimit.c: New file. * sysdeps/unix/sysv/linux/powerpc/getrlimit64.c: New file. * sysdeps/unix/sysv/linux/powerpc/mmap64.c: New file. * sysdeps/unix/sysv/linux/powerpc/setrlimit.c: New file. * sysdeps/unix/sysv/linux/powerpc/setrlimit64.c: New file. * sysdeps/unix/sysv/linux/powerpc/syscalls.list: Add s_fstat64, s_ftruncate64, s_lstat64, s_mmap2, s_stat64, s_truncate64. * sysdeps/unix/sysv/linux/powerpc/truncate64.c: New file. * sysdeps/unix/sysv/linux/powerpc/Versions: New file. * sysdeps/unix/sysv/linux/powerpc/brk.S [!PIC]: Don't access __curbrk off the small data area register. Reported by Andrew Haley <aph@pasanda.cygnus.co.uk>.
77 lines
2.1 KiB
C
77 lines
2.1 KiB
C
/* Copyright (C) 1999, 2000 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Jakub Jelinek <jakub@redhat.com>, 1999.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <errno.h>
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#include <unistd.h>
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#include <sysdep.h>
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#include <sys/syscall.h>
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#include <sys/mman.h>
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#include <asm/page.h>
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#include "kernel-features.h"
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#ifdef __NR_mmap2
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extern int __syscall_mmap2(__ptr_t, size_t, int, int, int, off_t);
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#ifndef __ASSUME_MMAP2_SYSCALL
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static int have_no_mmap2;
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#endif
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#endif
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__ptr_t
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__mmap64 (__ptr_t addr, size_t len, int prot, int flags, int fd, off64_t offset)
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{
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#ifdef __NR_mmap2
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if (
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#ifndef __ASSUME_MMAP2_SYSCALL
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! have_no_mmap2 &&
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#endif
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! (offset & PAGE_MASK))
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{
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#ifndef __ASSUME_MMAP2_SYSCALL
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int saved_errno = errno;
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#endif
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/* This will be always 12, no matter what page size is. */
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int result = INLINE_SYSCALL (mmap2, 6, addr, len, prot, flags,
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fd, (off_t) (offset >> PAGE_SHIFT));
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#ifndef __ASSUME_MMAP2_SYSCALL
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if (result != -1 || errno != ENOSYS)
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#endif
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return result;
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#ifndef __ASSUME_MMAP2_SYSCALL
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__set_errno (saved_errno);
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have_no_mmap2 = 1;
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#endif
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}
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#endif
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if (offset != (off_t) offset || (offset + len) != (off_t) (offset + len))
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{
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__set_errno (EINVAL);
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return MAP_FAILED;
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}
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return __mmap (addr, len, prot, flags, fd, (off_t) offset);
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}
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weak_alias (__mmap64, mmap64)
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