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/* Copyright (C) 1995, 96, 97, 98, 99, 2000, 2001 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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <sysdep.h>
#include "kernel-features.h"
#include <asm/errno.h>
/* Rather than dragging in yet another kernel file, <asm/page.h>, we
define it here. Provide for easy override. */
#ifndef PAGE_SHIFT
#define PAGE_SHIFT 13
#endif
.syntax no_register_prefix
/* This is __ptr_t
__mmap (__ptr_t addr, size_t len, int prot, int flags, int fd, off_t offset) */
ENTRY (__mmap)
/* Only accept a offset (and address) being a multiple of PAGE_SIZE,
since we only pass the page part in the system call. */
move.d [sp+4],r9
btstq (PAGE_SHIFT - 1),r9
bne 1f
btstq (PAGE_SHIFT - 1),r10
bne 1f
lsrq PAGE_SHIFT,r9
move [sp],mof
move srp,[sp]
move r9,srp
movu.b SYS_ify (mmap2),r9
break 13
cmps.w -4096,r10
bhs 0f
move [sp],srp
Ret
nop
/* Local error handler. */
1:
movs.w -EINVAL,r10
/* Drop through into the ordinary error handler. */
PSEUDO_END (__mmap)
weak_alias (__mmap, mmap)
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