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author | Florian Weimer <fweimer@redhat.com> | 2021-03-01 15:56:36 +0100 |
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committer | Florian Weimer <fweimer@redhat.com> | 2021-03-01 15:59:49 +0100 |
commit | d14624825a3eeb7712ffbe6e794cea1c5636de4d (patch) | |
tree | 3bcdcc2371e49cdbc25c95acdcf59de4f0aac73f /sysdeps/generic | |
parent | 7cf18db4820baf29b6d150fd124cf83675451161 (diff) | |
download | glibc-d14624825a3eeb7712ffbe6e794cea1c5636de4d.zip glibc-d14624825a3eeb7712ffbe6e794cea1c5636de4d.tar.gz glibc-d14624825a3eeb7712ffbe6e794cea1c5636de4d.tar.bz2 |
Move sysdeps/gnu/unwind-resume.c to sysdeps/generic/unwind-resume.c
This change allows architecture-specific sysdeps directories to override
it.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Diffstat (limited to 'sysdeps/generic')
-rw-r--r-- | sysdeps/generic/unwind-resume.c | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/sysdeps/generic/unwind-resume.c b/sysdeps/generic/unwind-resume.c new file mode 100644 index 0000000..09533d6 --- /dev/null +++ b/sysdeps/generic/unwind-resume.c @@ -0,0 +1,83 @@ +/* Copyright (C) 2003-2021 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Jakub Jelinek <jakub@redhat.com>. + + 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; see the file COPYING.LIB. If + not, see <https://www.gnu.org/licenses/>. */ + +#include <dlfcn.h> +#include <stdio.h> +#include <unwind.h> +#include <gnu/lib-names.h> +#include <sysdep.h> +#include <unwind-resume.h> + + +void (*__libgcc_s_resume) (struct _Unwind_Exception *exc) + attribute_hidden __attribute__ ((noreturn)); + +static _Unwind_Reason_Code (*libgcc_s_personality) PERSONALITY_PROTO; + +void attribute_hidden __attribute__ ((cold)) +__libgcc_s_init (void) +{ + void *resume, *personality; + void *handle; + + /* See include/dlfcn.h. Use of __libc_dlopen requires RTLD_NOW. */ + handle = __libc_dlopen (LIBGCC_S_SO); + + if (handle == NULL + || (resume = __libc_dlsym (handle, "_Unwind_Resume")) == NULL + || (personality = __libc_dlsym (handle, "__gcc_personality_v0")) == NULL) + __libc_fatal (LIBGCC_S_SO + " must be installed for unwinding to work\n"); + +#ifdef PTR_MANGLE + PTR_MANGLE (resume); +#endif + __libgcc_s_resume = resume; +#ifdef PTR_MANGLE + PTR_MANGLE (personality); +#endif + libgcc_s_personality = personality; +} + +#if !HAVE_ARCH_UNWIND_RESUME +void +_Unwind_Resume (struct _Unwind_Exception *exc) +{ + if (__glibc_unlikely (__libgcc_s_resume == NULL)) + __libgcc_s_init (); + + __typeof (__libgcc_s_resume) resume = __libgcc_s_resume; +#ifdef PTR_DEMANGLE + PTR_DEMANGLE (resume); +#endif + (*resume) (exc); +} +#endif + +_Unwind_Reason_Code +__gcc_personality_v0 PERSONALITY_PROTO +{ + if (__glibc_unlikely (libgcc_s_personality == NULL)) + __libgcc_s_init (); + + __typeof (libgcc_s_personality) personality = libgcc_s_personality; +#ifdef PTR_DEMANGLE + PTR_DEMANGLE (personality); +#endif + return (*personality) PERSONALITY_ARGS; +} |