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Diffstat (limited to 'libpthread/nptl/sysdeps/pthread/unwind-resume.c')
-rw-r--r--libpthread/nptl/sysdeps/pthread/unwind-resume.c76
1 files changed, 76 insertions, 0 deletions
diff --git a/libpthread/nptl/sysdeps/pthread/unwind-resume.c b/libpthread/nptl/sysdeps/pthread/unwind-resume.c
new file mode 100644
index 000000000..94da075d1
--- /dev/null
+++ b/libpthread/nptl/sysdeps/pthread/unwind-resume.c
@@ -0,0 +1,76 @@
+/* Copyright (C) 2003 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,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <dlfcn.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unwind.h>
+#include <libgcc_s.h>
+
+#define __libc_dlopen(x) dlopen(x, (RTLD_LOCAL | RTLD_LAZY))
+#define __libc_dlsym dlsym
+#define __libc_dlclose dlclose
+
+static void (*libgcc_s_resume) (struct _Unwind_Exception *exc);
+static _Unwind_Reason_Code (*libgcc_s_personality)
+ (int, _Unwind_Action, _Unwind_Exception_Class, struct _Unwind_Exception *,
+ struct _Unwind_Context *);
+
+extern
+void abort(void);
+
+static void
+init (void)
+{
+ void *resume, *personality;
+ void *handle;
+ resume = personality = NULL;
+ handle = dlopen (LIBGCC_S_SO, (RTLD_LOCAL | RTLD_LAZY));
+
+ if (handle == NULL
+ || (resume = dlsym (handle, "_Unwind_Resume")) == NULL
+ || (personality = dlsym (handle, "__gcc_personality_v0")) == NULL)
+ {
+ printf (LIBGCC_S_SO " must be installed for pthread_cancel to work\n");
+ abort();
+ }
+
+ libgcc_s_resume = resume;
+ libgcc_s_personality = personality;
+}
+
+void
+_Unwind_Resume (struct _Unwind_Exception *exc)
+{
+ if (__builtin_expect (libgcc_s_resume == NULL, 0))
+ init ();
+ libgcc_s_resume (exc);
+}
+
+_Unwind_Reason_Code
+__gcc_personality_v0 (int version, _Unwind_Action actions,
+ _Unwind_Exception_Class exception_class,
+ struct _Unwind_Exception *ue_header,
+ struct _Unwind_Context *context)
+{
+ if (__builtin_expect (libgcc_s_personality == NULL, 0))
+ init ();
+ return libgcc_s_personality (version, actions, exception_class,
+ ue_header, context);
+}