1 files changed, 65 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/csky/abiv2/sysdep.S b/sysdeps/unix/sysv/linux/csky/abiv2/sysdep.S
new file mode 100644
index 0000000000..280c41a8d7
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/csky/abiv2/sysdep.S
@@ -0,0 +1,65 @@
+/* syscall error handlers.  C-SKY ABIV2 version.
+   Copyright (C) 2018 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 syscall stubs jump here when they detect an error.
+   The code for Linux is almost identical to the canonical Unix
+   code, except that the error number in R0 is negated.  */
+
+#undef CALL_MCOUNT
+#define CALL_MCOUNT /* Don't insert the profiling call, it clobbers R0.  */
+
+	.text
+ENTRY (__syscall_error)
+	movi	a1, 0
+	rsub	a0, a0, a1
+
+#if !IS_IN (rtld)
+	mov	a1, a0
+	mov	a0, tls
+
+	grs	t1, .Lgetpc1
+.Lgetpc1:
+	lrw	t0, errno@gottpoff
+	add	t1, t1, t0
+	ldw	t1, (t1)
+	add	t1, a0
+	stw	a1, (t1)
+	bmaski	a0, 0
+	rts
+#elif RTLD_PRIVATE_ERRNO /* !IS_IN (rtld) */
+# ifdef  __PIC__
+	grs	t1, .Lgetpc2
+.Lgetpc2:
+	lrw	t0, .Lgetpc2@GOTPC
+	addu	t1, t1, t0
+	lrw	t0, rtld_errno@PLT
+	ldr.w	t0, (t1, t0 << 0)
+# else
+	lrw	t0, rtld_errno
+# endif /* __PIC__ */
+	stw	a0, (t0)
+	bmaski	a0, 0
+	rts
+#else
+# error "Unsupported non-TLS case"
+#endif /* RTLD_PRIVATE_ERRNO */
+
+#undef __syscall_error
+END (__syscall_error)