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Diffstat (limited to 'libc/sysdeps/linux/nds32/swapcontext.c')
-rw-r--r--libc/sysdeps/linux/nds32/swapcontext.c38
1 files changed, 38 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/nds32/swapcontext.c b/libc/sysdeps/linux/nds32/swapcontext.c
new file mode 100644
index 000000000..310923f0d
--- /dev/null
+++ b/libc/sysdeps/linux/nds32/swapcontext.c
@@ -0,0 +1,38 @@
+/* Copyright (C) 2001-2013 Free Software Foundation, Inc.
+ Contributed by David Mosberger-Tang <davidm@hpl.hp.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; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <ucontext.h>
+
+struct rv
+ {
+ long retval;
+ long first_return;
+ };
+
+extern struct rv __getcontext (ucontext_t *__ucp);
+extern int __setcontext (const ucontext_t *__ucp);
+
+int
+__swapcontext (ucontext_t *oucp, const ucontext_t *ucp)
+{
+ struct rv rv = __getcontext (oucp);
+ if (rv.first_return)
+ __setcontext (ucp);
+ return 0;
+}
+
+weak_alias (__swapcontext, swapcontext)