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b9eb92ab | 1 | /* Linux mmap system call. x86-64 version. |
688903eb | 2 | Copyright (C) 2015-2018 Free Software Foundation, Inc. |
b9eb92ab L |
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 | ||
158d5fa0 AZ |
20 | #ifndef MMAP_X86_64_INTERNAL_H |
21 | #define MMAP_X86_64_INTERNAL_H | |
22 | ||
b9eb92ab L |
23 | #include <ldsodefs.h> |
24 | ||
25 | /* If the Prefer_MAP_32BIT_EXEC bit is set, try to map executable pages | |
26 | with MAP_32BIT first. */ | |
27 | #define MMAP_PREPARE(addr, len, prot, flags, fd, offset) \ | |
28 | if ((addr) == NULL \ | |
29 | && ((prot) & PROT_EXEC) != 0 \ | |
30 | && HAS_ARCH_FEATURE (Prefer_MAP_32BIT_EXEC)) \ | |
31 | { \ | |
158d5fa0 | 32 | void *ret = (void*) INLINE_SYSCALL_CALL (mmap, (addr), (len), \ |
b9eb92ab L |
33 | (prot), \ |
34 | (flags) | MAP_32BIT, \ | |
35 | (fd), (offset)); \ | |
36 | if (ret != MAP_FAILED) \ | |
37 | return ret; \ | |
38 | } | |
39 | ||
158d5fa0 AZ |
40 | #include_next <mmap_internal.h> |
41 | ||
42 | #endif |