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comparison 3rdparty/dyncall/dyncallback/dyncall_alloc_wx_mmap.c @ 0:2cf249471370

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author Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
date Tue, 08 May 2018 16:09:12 +0900
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-1:000000000000 0:2cf249471370
1 /*
2
3 Package: dyncall
4 Library: dyncallback
5 File: dyncallback/dyncall_alloc_wx_mmap.c
6 Description: Allocate write/executable memory - Implementation for posix
7 License:
8
9 Copyright (c) 2007-2011 Daniel Adler <dadler@uni-goettingen.de>,
10 Tassilo Philipp <tphilipp@potion-studios.com>
11
12 Permission to use, copy, modify, and distribute this software for any
13 purpose with or without fee is hereby granted, provided that the above
14 copyright notice and this permission notice appear in all copies.
15
16 THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
17 WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
18 MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
19 ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
20 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
21 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
22 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
23
24 */
25
26 #include "dyncall_alloc_wx.h"
27
28 #include <sys/types.h>
29 #include <sys/mman.h>
30
31 int dcAllocWX(size_t size, void** pp)
32 {
33 void* p = mmap(0, size, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
34 if (p == ( (void*)-1 ) ) return -1;
35 *pp = p;
36 return 0;
37 }
38
39 void dcFreeWX(void* p, size_t size)
40 {
41 munmap(p, size);
42 }