| /* Linux mmap system call. x86-64 version. |
| Copyright (C) 2015-2018 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, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #ifndef MMAP_X86_64_INTERNAL_H |
| #define MMAP_X86_64_INTERNAL_H |
| |
| #include <ldsodefs.h> |
| |
| /* If the Prefer_MAP_32BIT_EXEC bit is set, try to map executable pages |
| with MAP_32BIT first. */ |
| #define MMAP_PREPARE(addr, len, prot, flags, fd, offset) \ |
| if ((addr) == NULL \ |
| && ((prot) & PROT_EXEC) != 0 \ |
| && HAS_ARCH_FEATURE (Prefer_MAP_32BIT_EXEC)) \ |
| { \ |
| void *ret = (void*) INLINE_SYSCALL_CALL (mmap, (addr), (len), \ |
| (prot), \ |
| (flags) | MAP_32BIT, \ |
| (fd), (offset)); \ |
| if (ret != MAP_FAILED) \ |
| return ret; \ |
| } |
| |
| #include_next <mmap_internal.h> |
| |
| #endif |
