Commit nios2 port to master.

1 files changed, 50 insertions, 0 deletions

diff --git a/sysdeps/unix/sysv/linux/nios2/sysdep.S b/sysdeps/unix/sysv/linux/nios2/sysdep.S
new file mode 100644
index 0000000..cb3b7f6
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/sysdep.S
@@ -0,0 +1,50 @@
+/* Static library error handling code fragment for Nios II.
+   Copyright (C) 2015 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>
+
+/* The following code is only used in the static library. In the shared
+   library, the error handling code is at the end of each function.  */
+
+#ifndef	PIC
+
+/* In the static library, the syscall stubs jump here when they detect
+   an error.  */
+
+# undef CALL_MCOUNT
+# define CALL_MCOUNT /* Don't insert the profiling call, it clobbers r2.  */
+
+# if IS_IN (libc)
+#  define SYSCALL_ERROR_ERRNO __libc_errno
+# else
+#  define SYSCALL_ERROR_ERRNO errno
+# endif
+	.text
+ENTRY (__syscall_error)
+	nextpc	r3
+1:
+	movhi	r8, %hiadj(_gp_got - 1b)
+	addi	r8, r8, %lo(_gp_got - 1b)
+	add	r3, r3, r8
+	ldw	r3, %tls_ie(SYSCALL_ERROR_ERRNO)(r3)
+	add	r3, r23, r3
+	stw	r2, 0(r3)
+	movi	r2, -1
+	ret
+END (__syscall_error)
+#endif