Merge glibc-ports into ports/ directory.glibc-2.16-ports-merge

1 files changed, 50 insertions, 0 deletions

diff --git a/ports/sysdeps/unix/sysv/linux/alpha/swapcontext.S b/ports/sysdeps/unix/sysv/linux/alpha/swapcontext.S
new file mode 100644
index 0000000000..99ed0f8d43
--- /dev/null
+++ b/ports/sysdeps/unix/sysv/linux/alpha/swapcontext.S
@@ -0,0 +1,50 @@
+/* Save current context and install the given one.
+   Copyright (C) 2004 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   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 <sysdep.h>
+#include <ucontext-offsets.h>
+
+ENTRY(__swapcontext)
+
+#ifdef PROF
+	ldgp	$29, 0($27)
+	.set noat
+	lda     AT, _mcount
+	jsr     AT, (AT), _mcount
+	.set at
+	.prologue 1
+#elif defined PIC
+	.prologue 0
+#else
+	ldgp	$29, 0($27)
+	.prologue 1
+#endif
+
+#ifdef PIC
+	unop
+	bsr	$0, __getcontext_x	!samegp
+	mov	$17, $16
+	br	$31, __setcontext	!samegp
+#else
+	jsr	$0, __getcontext_x
+	mov	$17, $16
+	jmp	$31, __setcontext
+#endif
+
+END(__swapcontext)
+weak_alias (__swapcontext, swapcontext)