From 04e65276fa99a0de996142b054bb76f8491ae103 Mon Sep 17 00:00:00 2001
From: Claudiu Zissulescu <claziss@gmail.com>
Date: Mon, 23 Jul 2018 11:09:43 +0200
Subject: [ARC] Fix decoding of w6 signed short immediate.

gas/
  Claudiu Zissulescu  <claziss@synopsys.com>

        * testsuite/gas/arc/st.d: Fix test.

opcodes/
  Claudiu Zissulescu  <claziss@synopsys.com>

        * arc-opc.c (extract_w6): Fix extending the sign.
---
 opcodes/arc-opc.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'opcodes/arc-opc.c')

diff --git a/opcodes/arc-opc.c b/opcodes/arc-opc.c
index 5349e13..b87a231 100644
--- a/opcodes/arc-opc.c
+++ b/opcodes/arc-opc.c
@@ -651,10 +651,14 @@ static long long
 extract_w6 (unsigned long long  insn,
 	    bfd_boolean *       invalid ATTRIBUTE_UNUSED)
 {
-  unsigned value = 0;
+  int value = 0;
 
   value |= ((insn >> 6) & 0x003f) << 0;
 
+  /* Extend the sign.  */
+  int signbit = 1 << 5;
+  value = (value ^ signbit) - signbit;
+
   return value;
 }
 
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