2001-04-09 12:43:42 +08:00
|
|
|
/* 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
|
2001-07-06 12:56:23 +08:00
|
|
|
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.
|
2001-04-09 12:43:42 +08:00
|
|
|
|
|
|
|
|
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
|
2001-07-06 12:56:23 +08:00
|
|
|
Lesser General Public License for more details.
|
2001-04-09 12:43:42 +08:00
|
|
|
|
2001-07-06 12:56:23 +08:00
|
|
|
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. */
|
2001-04-09 12:43:42 +08:00
|
|
|
|
|
|
|
|
#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)
|
