mirror of
git://sourceware.org/git/glibc.git
synced 2024-12-27 04:41:02 +08:00
41bdb6e20c
2001-07-06 Paul Eggert <eggert@twinsun.com> * manual/argp.texi: Remove ignored LGPL copyright notice; it's not appropriate for documentation anyway. * manual/libc-texinfo.sh: "Library General Public License" -> "Lesser General Public License". 2001-07-06 Andreas Jaeger <aj@suse.de> * All files under GPL/LGPL version 2: Place under LGPL version 2.1.
89 lines
2.1 KiB
ArmAsm
89 lines
2.1 KiB
ArmAsm
/* Copyright (C) 1995, 96, 97, 98, 99, 2000 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 <sysdep.h>
|
|
|
|
#include "kernel-features.h"
|
|
|
|
#define EINVAL 22
|
|
|
|
.text
|
|
|
|
ENTRY (__mmap)
|
|
|
|
/* I don't think it is worthwhile trzing to use mmap2 whenever it
|
|
is available. Only use it when we are sure the syscall exists. */
|
|
#ifdef __ASSUME_MMAP2_SYSCALL
|
|
|
|
/* Save registers. */
|
|
pushl %ebp
|
|
pushl %ebx
|
|
pushl %esi
|
|
pushl %edi
|
|
|
|
movl 20(%esp), %ebx
|
|
movl 24(%esp), %ecx
|
|
movl 28(%esp), %edx
|
|
movl 32(%esp), %esi
|
|
movl 36(%esp), %edi
|
|
movl 40(%esp), %ebp
|
|
testl $0xfff, %ebp
|
|
movl $-EINVAL, %eax
|
|
jne L(skip)
|
|
shrl $12, %ebp /* mmap2 takes the offset in pages. */
|
|
|
|
movl $SYS_ify(mmap2), %eax /* System call number in %eax. */
|
|
|
|
/* Do the system call trap. */
|
|
int $0x80
|
|
L(skip):
|
|
/* Restore registers. */
|
|
popl %edi
|
|
popl %esi
|
|
popl %ebx
|
|
popl %ebp
|
|
|
|
#else
|
|
|
|
/* Save registers. */
|
|
movl %ebx, %edx
|
|
|
|
movl $SYS_ify(mmap), %eax /* System call number in %eax. */
|
|
|
|
lea 4(%esp), %ebx /* Address of args is 1st arg. */
|
|
|
|
/* Do the system call trap. */
|
|
int $0x80
|
|
|
|
/* Restore registers. */
|
|
movl %edx, %ebx
|
|
|
|
#endif
|
|
|
|
/* If 0 > %eax > -4096 there was an error. */
|
|
cmpl $-4096, %eax
|
|
ja SYSCALL_ERROR_LABEL
|
|
|
|
/* Successful; return the syscall's value. */
|
|
L(pseudo_end):
|
|
ret
|
|
|
|
PSEUDO_END (__mmap)
|
|
|
|
weak_alias (__mmap, mmap)
|