diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/i386/mmap.S')
-rw-r--r-- | sysdeps/unix/sysv/linux/i386/mmap.S | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/i386/mmap.S b/sysdeps/unix/sysv/linux/i386/mmap.S new file mode 100644 index 0000000000..96ea870846 --- /dev/null +++ b/sysdeps/unix/sysv/linux/i386/mmap.S @@ -0,0 +1,45 @@ +/* Copyright (C) 1995 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., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include <sysdep.h> + +.globl syscall_error + +ENTRY (__mmap) + + /* 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 + + /* %eax is < 0 if there was an error. */ + testl %eax, %eax + jl JUMPTARGET(syscall_error) + + /* Successful; return the syscall's value. */ + ret + +weak_alias (__mmap, mmap) |