diff options
Diffstat (limited to 'REORG.TODO/nptl/pt-system.c')
-rw-r--r-- | REORG.TODO/nptl/pt-system.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/REORG.TODO/nptl/pt-system.c b/REORG.TODO/nptl/pt-system.c new file mode 100644 index 0000000000..f8ca6ba0d9 --- /dev/null +++ b/REORG.TODO/nptl/pt-system.c @@ -0,0 +1,53 @@ +/* ABI compatibility for 'system' symbol in libpthread ABI. + Copyright (C) 2002-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. + + 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/>. */ + +#include <stdlib.h> +#include <shlib-compat.h> + +/* libpthread once had its own 'system', though there was no apparent + reason for it. There is no use in having a separate symbol in + libpthread, but the historical ABI requires it. For static linking, + there is no need to provide anything here--the libc version will be + linked in. For shared library ABI compatibility, there must be a + 'system' symbol in libpthread.so; so we define it using IFUNC to + redirect to the libc function. */ + +#if SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_22) + +# if HAVE_IFUNC + +extern __typeof(system) system_ifunc; +# undef INIT_ARCH +# define INIT_ARCH() +libc_ifunc (system_ifunc, &__libc_system) + +# else /* !HAVE_IFUNC */ + +static int __attribute__ ((used)) +system_compat (const char *line) +{ + return __libc_system (line); +} +strong_alias (system_compat, system_ifunc) + +# endif /* HAVE_IFUNC */ + +compat_symbol (libpthread, system_ifunc, system, GLIBC_2_0); + +#endif |