ARC port to uClibc

For this port, I would like to give due credit to:

- Folks from Codito technologies (Sameer, Amit, Kanika, Ramana,...)
   who did the very first port

- ARC UK from 2007-2009 (Joern, Irfan, Khurram, Phil...

- Late Brendan Kehoe (may he RIP)

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

1 files changed, 39 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/arc/setjmp.S b/libc/sysdeps/linux/arc/setjmp.S
new file mode 100644
index 000000000..b6a65f579
--- /dev/null
+++ b/libc/sysdeps/linux/arc/setjmp.S
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2013 Synopsys, Inc. (www.synopsys.com)
+ *
+ * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
+ */
+
+#include <sysdep.h>
+
+;@ r0 = jump buffer into which regs will be saved
+;@ r1 = do we need to save signals
+
+ENTRY(__sigsetjmp)
+
+	st_s r13, [r0]
+	st_s r14, [r0,4]
+	st   r15, [r0,8]
+	st   r16, [r0,12]
+	st   r17, [r0,16]
+	st   r18, [r0,20]
+	st   r19, [r0,24]
+	st   r20, [r0,28]
+	st   r21, [r0,32]
+	st   r22, [r0,36]
+	st   r23, [r0,40]
+	st   r24, [r0,44]
+	st   r25, [r0,48]
+	st   fp,  [r0,52]
+	st   sp,  [r0,56]
+
+	; make a note of where longjmp will return to.
+	; that will be right next to this setjmp call-site which will be
+	; contained in blink, since "C" caller of this routine will do
+	; a branch-n-link
+
+	st   blink, [r0,60]
+	b    __sigjmp_save
+
+END(__sigsetjmp)
+libc_hidden_def(__sigsetjmp)