[ARC] Force the disassam to use the hexadecimal number for printing

Force printing of the short/signed values using hexadecimal
representation via disassembler option.

opcode/
2017-11-03  Claudiu Zissulescu  <claziss@synopsys.com>

        * arc-dis.c (print_hex): New variable.
        (parse_option): Check for hex option.
        (print_insn_arc): Use hexadecimal representation for short
        immediate values when requested.
        (print_arc_disassembler_options): Add hex option to the list.

binutils/
2017-11-03  Claudiu Zissulescu  <claziss@synopsys.com>

        * doc/binutils.texi (ARC): Update disassembler options.
        * testsuite/binutils-all/arc/hexprint.s: New file.
        * testsuite/binutils-all/arc/objdump.exp: Test hex printing feature.

4 files changed, 19 insertions, 1 deletions

diff --git a/binutils/ChangeLog b/binutils/ChangeLog
index aa76e27cf66..ede61022f61 100644
--- a/binutils/ChangeLog
+++ b/binutils/ChangeLog
@@ -1,3 +1,10 @@
+2017-11-03  Claudiu Zissulescu  <claziss@synopsys.com>
+
+	* doc/binutils.texi (ARC): Update disassembler options.
+	* testsuite/binutils-all/arc/hexprint.s: New file.
+	* testsuite/binutils-all/arc/objdump.exp: Test hex printing
+	feature.
+
 2017-11-03  Mingi Cho  <mgcho.minic@gmail.com>
 	    Nick Clifton  <nickc@redhat.com>
 
diff --git a/binutils/doc/binutils.texi b/binutils/doc/binutils.texi
index ad924d81629..03706dbd64f 100644
--- a/binutils/doc/binutils.texi
+++ b/binutils/doc/binutils.texi
@@ -2313,6 +2313,10 @@ special QuarkSE-EM instructions, @option{fpuda} selects the printing
 of double precision assist instructions, @option{fpus} selects the
 printing of FPU single precision FP instructions, while @option{fpud}
 selects the printing of FPU souble precision FP instructions.
+Additionally, one can choose to have all the immediates printed in
+hexadecimal using @option{hex}.  By default, the short immediates are
+printed using the decimal representation, while the long immediate
+values are printed as hexadecimal.
 
 @option{cpu=...} allows to enforce a particular ISA when disassembling
 instructions, overriding the @option{-m} value or whatever is in the ELF file.
diff --git a/binutils/testsuite/binutils-all/arc/hexprint.s b/binutils/testsuite/binutils-all/arc/hexprint.s
new file mode 100644
index 00000000000..bdc61b087ab
--- /dev/null
+++ b/binutils/testsuite/binutils-all/arc/hexprint.s
@@ -0,0 +1,2 @@
+	.cpu EM
+	st r0,[r1,-9]
diff --git a/binutils/testsuite/binutils-all/arc/objdump.exp b/binutils/testsuite/binutils-all/arc/objdump.exp
index 2037b2b4833..669d57ace75 100644
--- a/binutils/testsuite/binutils-all/arc/objdump.exp
+++ b/binutils/testsuite/binutils-all/arc/objdump.exp
@@ -91,4 +91,9 @@ check_assembly "arc double_store -Mcpu=em,fpus" $objfile \
 # Make sure that the last cpu= value is used.
 check_assembly "arc double_store -Mcpu=hs,cpu=em" $objfile \
     $double_store_em_expected "-Mcpu=hs,cpu=em"
-
+# Check the hex printing for short immediates.
+set thexobj [do_objfile hexprint.s]
+check_assembly "arc hex printing" $thexobj \
+    {st\s*r0,\[r1,0xfffffff7\]} "-Mhex"
+check_assembly "arc normal printing" $thexobj \
+    {st\s*r0,\[r1,-9\]}