1 | /* Linux mmap system call. x86-64 version. |
2 | Copyright (C) 2015-2016 Free Software Foundation, Inc. |
3 | |
4 | This file is part of the GNU C Library. |
5 | |
6 | The GNU C Library is free software; you can redistribute it and/or |
7 | modify it under the terms of the GNU Lesser General Public License as |
8 | published by the Free Software Foundation; either version 2.1 of the |
9 | License, or (at your option) any later version. |
10 | |
11 | The GNU C Library is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
14 | Lesser General Public License for more details. |
15 | |
16 | You should have received a copy of the GNU Lesser General Public |
17 | License along with the GNU C Library; if not, see |
18 | <http://www.gnu.org/licenses/>. */ |
19 | |
20 | #include <ldsodefs.h> |
21 | |
22 | /* If the Prefer_MAP_32BIT_EXEC bit is set, try to map executable pages |
23 | with MAP_32BIT first. */ |
24 | #define MMAP_PREPARE(addr, len, prot, flags, fd, offset) \ |
25 | if ((addr) == NULL \ |
26 | && ((prot) & PROT_EXEC) != 0 \ |
27 | && HAS_ARCH_FEATURE (Prefer_MAP_32BIT_EXEC)) \ |
28 | { \ |
29 | __ptr_t ret = (__ptr_t) INLINE_SYSCALL (mmap, 6, (addr), (len), \ |
30 | (prot), \ |
31 | (flags) | MAP_32BIT, \ |
32 | (fd), (offset)); \ |
33 | if (ret != MAP_FAILED) \ |
34 | return ret; \ |
35 | } |
36 | |
37 | #include <sysdeps/unix/sysv/linux/wordsize-64/mmap.c> |
38 | |