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/* Linux mmap system call. x86-64 version.
Copyright (C) 2015-2020 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
<https://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
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