Relocate hppa from ports to libc.

1 files changed, 42 insertions, 0 deletions

diff --git a/sysdeps/unix/sysv/linux/hppa/swapcontext.c b/sysdeps/unix/sysv/linux/hppa/swapcontext.c
new file mode 100644
index 0000000000..ec811868ec
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/hppa/swapcontext.c
@@ -0,0 +1,42 @@
+/* Swap to new context.
+   Copyright (C) 2008-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Helge Deller <deller@gmx.de>, 2008.
+
+   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>
+
+extern int __getcontext (ucontext_t *ucp);
+extern int __setcontext (const ucontext_t *ucp);
+
+int
+__swapcontext (ucontext_t *oucp, const ucontext_t *ucp)
+{
+  /* Save the current machine context to oucp.  */
+  __getcontext (oucp);
+
+  /* mark sc_sar flag to skip the setcontext call on reactivation.  */
+  if (oucp->uc_mcontext.sc_sar == 0) {
+	oucp->uc_mcontext.sc_sar++;
+
+	/* Restore the machine context in ucp.  */
+	__setcontext (ucp);
+  }
+
+  return 0;
+}
+
+weak_alias (__swapcontext, swapcontext)