1 /* Copyright (C) 1995, 96, 97, 98, 99, 2000 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, write to the Free
16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
21 #include "kernel-features.h"
29 /* I don't think it is worthwhile trzing to use mmap2 whenever it
30 is available. Only use it when we are sure the syscall exists. */
31 #ifdef __ASSUME_MMAP2_SYSCALL
48 shrl $12, %ebp /* mmap2 takes the offset in pages. */
50 movl $SYS_ify(mmap2), %eax /* System call number in %eax. */
52 /* Do the system call trap. */
55 /* Restore registers. */
66 movl $SYS_ify(mmap), %eax /* System call number in %eax. */
68 lea 4(%esp), %ebx /* Address of args is 1st arg. */
70 /* Do the system call trap. */
73 /* Restore registers. */
78 /* If 0 > %eax > -4096 there was an error. */
80 ja SYSCALL_ERROR_LABEL
82 /* Successful; return the syscall's value. */
88 weak_alias (__mmap, mmap)