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491bb085 | 1 | /* vfork ABI-compatibility entry points for libpthread. |
04277e02 | 2 | Copyright (C) 2014-2019 Free Software Foundation, Inc. |
491bb085 ZW |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library; if not, see | |
17 | <http://www.gnu.org/licenses/>. */ | |
18 | ||
19 | #include <sysdep.h> | |
20 | #include <shlib-compat.h> | |
21 | ||
22 | /* libpthread used to have its own vfork implementation that differed | |
23 | from libc's only in having a pointless micro-optimization. There | |
24 | is no longer any use to having a separate copy in libpthread, but | |
25 | the historical ABI requires it. For static linking, there is no | |
26 | need to provide anything here--the libc version will be linked in. | |
27 | For shared library ABI compatibility, there must be __vfork and | |
28 | vfork symbols in libpthread.so. | |
29 | ||
30 | As of GCC 7, microblaze can *not* rely on the compiler to generate | |
31 | a tail call from this vfork to __libc_vfork. */ | |
32 | ||
33 | #if (SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_20) \ | |
34 | || SHLIB_COMPAT (libpthread, GLIBC_2_1_2, GLIBC_2_20)) | |
35 | ||
36 | ENTRY (vfork_compat) | |
d95fcb2d | 37 | bri __libc_vfork@PLT |
491bb085 ZW |
38 | END (vfork_compat) |
39 | ||
40 | #endif | |
41 | ||
42 | #if SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_20) | |
43 | compat_symbol (libpthread, vfork_compat, vfork, GLIBC_2_0) | |
44 | #endif | |
45 | ||
46 | #if SHLIB_COMPAT (libpthread, GLIBC_2_1_2, GLIBC_2_20) | |
47 | strong_alias (vfork_compat, vfork_compat2) | |
48 | compat_symbol (libpthread, vfork_compat2, __vfork, GLIBC_2_1_2) | |
49 | #endif |