AArch64 Port

1 files changed, 35 insertions, 0 deletions

diff --git a/ports/sysdeps/unix/sysv/linux/aarch64/nptl/pt-vfork.S b/ports/sysdeps/unix/sysv/linux/aarch64/nptl/pt-vfork.S
new file mode 100644
index 0000000000..6096822cfc
--- /dev/null
+++ b/ports/sysdeps/unix/sysv/linux/aarch64/nptl/pt-vfork.S
@@ -0,0 +1,35 @@
+/* Copyright (C) 2009-2012 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 <tcb-offsets.h>
+
+/* Save the PID value.  */
+#define SAVE_PID							\
+	mrs	x2, tpidr_el0;						\
+	sub	x2, x2, #PTHREAD_SIZEOF;				\
+	ldr	w3, [x2, #PTHREAD_PID_OFFSET];				\
+	neg	w0, w3;							\
+	str	w0, [x2, #PTHREAD_PID_OFFSET]
+
+/* Restore the old PID value in the parent.  */
+#define RESTORE_PID                                                     \
+	cbz	x0, 1f;							\
+	str	w3, [x2, #PTHREAD_PID_OFFSET];				\
+1:
+
+#include "../vfork.S"