1 files changed, 68 insertions, 0 deletions
diff --git a/ports/sysdeps/unix/arm/sysdep.S b/ports/sysdeps/unix/arm/sysdep.S
new file mode 100644
index 0000000000..e0d60732ee
--- /dev/null
+++ b/ports/sysdeps/unix/arm/sysdep.S
@@ -0,0 +1,68 @@
+/* Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 2002, 2003,
+   2004, 2005, 2009, 2011, 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 <sysdep.h>
+#define _ERRNO_H
+#include <bits/errno.h>
+
+#ifdef IS_IN_rtld
+# include <dl-sysdep.h>			/* Defines RTLD_PRIVATE_ERRNO.  */
+#endif
+
+#include <tls.h>
+
+#undef syscall_error
+__syscall_error:
+#if defined (EWOULDBLOCK_sys) && EWOULDBLOCK_sys != EAGAIN
+	/* We translate the system's EWOULDBLOCK error into EAGAIN.
+	   The GNU C library always defines EWOULDBLOCK==EAGAIN.
+	   EWOULDBLOCK_sys is the original number.  */
+	cmp r0, $EWOULDBLOCK_sys /* Is it the old EWOULDBLOCK?  */
+	moveq r0, $EAGAIN	/* Yes; translate it to EAGAIN.  */
+#endif
+
+#ifndef IS_IN_rtld
+	mov ip, lr
+	cfi_register (lr, ip)
+	mov r1, r0
+
+	mov r0, #0xffff0fff
+	mov lr, pc
+	sub pc, r0, #31
+
+	ldr r2, 1f
+2:	ldr r2, [pc, r2]
+	str r1, [r0, r2]
+	mvn r0, #0
+	RETINSTR (, ip)
+
+1:	.word errno(gottpoff) + (. - 2b - 8)
+#elif RTLD_PRIVATE_ERRNO
+	ldr r1, 1f
+0:	str r0, [pc, r1]
+	mvn r0, $0
+	DO_RET(r14)
+
+1:	.word C_SYMBOL_NAME(rtld_errno) - 0b - 8
+#else
+#error "Unsupported non-TLS case"
+#endif
+
+#undef	__syscall_error
+END (__syscall_error)