Begin implementing ARC NPS-400 Accelerator instructions

opcodes * arc-nps400-tbl.h: Change block comments to GNU format.
        * arc-dis.c: Add new globals addrtypenames,
        addrtypenames_max, and addtypeunknown.
        (get_addrtype): New function.
        (print_insn_arc): Print colons and address types when
        required.
        * arc-opc.c: Add MAKE_INSERT_NPS_ADDRTYPE macro and use to
        define insert and extract functions for all address types.
        (arc_operands): Add operands for colon and all address
        types.
        * arc-nps-400-tbl.h: Add NPS-400 BMU instructions to opcode table.
        * arc-opc.c: Add NPS_BD_TYPE and NPS_BMU_NUM operands,
        insert_nps_bd_num_buff and extract_nps_bd_num_buff functions.
        * arc-nps-400-tbl.h: Add NPS-400 PMU instructions to opcode table.
        * arc-opc.c: Add NPS_PMU_NXT_DST and NPS_PMU_NUM_JOB operands,
        insert_nps_pmu_num_job and extract_nps_pmu_num_job functions.

include * opcode/arc.h: Add ARC_OPERAND_ADDRTYPE,
        ARC_OPERAND_COLON. Add the arc_nps_address_type enum and
        ARC_NUM_ADDRTYPES.
        * opcode/arc.h: Add BMU to insn_class_t enum.
        * opcode/arc.h: Add PMU to insn_class_t enum.

gas     * config/tc-arc.c: Add new global arc_addrtype_hash.
        Define O_colon and O_addrtype.
        (debug_exp): Add O_colon and O_addrtype.
        (tokenize_arguments): Handle colon and address type
        tokens.
        (declare_addrtype): New function.
        (md_begin): Initialise arc_addrtype_hash.
        (arc_parse_name): Add lookup of address types.
	(assemble_insn): Handle colons and address types by
        ignoring them.
        * testsuite/gas/arc/nps400-8.s: New file.
        * testsuite/gas/arc/nps400-8.d: New file.
        * testsuite/gas/arc/nps400-8.s: Add PMU instruction tests.
        * testsuite/gas/arc/nps400-8.d: Add expected PMU
        instruction output.

opcodes/arc-dis.c

@@ -85,6 +85,16 @@ static const char * const regnames[64] =
   "r56", "r57", "ACCL", "ACCH", "lp_count", "rezerved", "LIMM", "pcl"
 };
 
+static const char * const addrtypenames[ARC_NUM_ADDRTYPES] =
+{
+  "bd", "jid", "lbd", "mbd", "sd", "sm", "xa", "xd",
+  "cd", "cbd", "cjid", "clbd", "cm", "csd", "cxa", "cxd"
+};
+
+static int addrtypenames_max = ARC_NUM_ADDRTYPES - 1;
+
+static const char * const addrtypeunknown = "unknown";
+
 /* This structure keeps track which instruction class(es)
    should be ignored durring disassembling.  */
 
@@ -175,7 +185,7 @@ skip_this_opcode (const struct arc_opcode *  opcode,
   /* If we found an incompatibility then we must skip.  */
   if (t != NULL)
     return TRUE;
-  
+
   /* Even if we do not precisely know the if the right mnemonics
      is correctly displayed, keep the disassmbled code class
      consistent.  */
@@ -653,6 +663,18 @@ get_auxreg (const struct arc_opcode *opcode,
   return NULL;
 }
 
+/* Convert a value representing an address type to a string used to refer to
+   the address type in assembly code.  */
+
+static const char *
+get_addrtype (int value)
+{
+  if (value < 0 || value > addrtypenames_max)
+    return addrtypeunknown;
+
+  return addrtypenames[value];
+}
+
 /* Calculate the instruction length for an instruction starting with MSB
    and LSB, the most and least significant byte.  The ISA_MASK is used to
    filter the instructions considered to only those that are part of the
@@ -1104,8 +1126,7 @@ print_insn_arc (bfd_vma memaddr,
 	}
 
       /* Only take input from real operands.  */
-      if ((operand->flags & ARC_OPERAND_FAKE)
-	  && !(operand->flags & ARC_OPERAND_BRAKET))
+      if (ARC_OPERAND_IS_FAKE (operand))
 	continue;
 
       if ((operand->flags & ARC_OPERAND_IGNORE)
@@ -1113,6 +1134,12 @@ print_insn_arc (bfd_vma memaddr,
           && value == -1)
 	continue;
 
+      if (operand->flags & ARC_OPERAND_COLON)
+        {
+          (*info->fprintf_func) (info->stream, ":");
+          continue;
+        }
+
       if (need_comma)
 	(*info->fprintf_func) (info->stream, ",");
 
@@ -1124,6 +1151,8 @@ print_insn_arc (bfd_vma memaddr,
 	  continue;
 	}
 
+      need_comma = TRUE;
+
       /* Print the operand as directed by the flags.  */
       if (operand->flags & ARC_OPERAND_IR)
 	{
@@ -1145,6 +1174,7 @@ print_insn_arc (bfd_vma memaddr,
       else if (operand->flags & ARC_OPERAND_LIMM)
 	{
 	  const char *rname = get_auxreg (opcode, value, isa_mask);
+
 	  if (rname && open_braket)
 	    (*info->fprintf_func) (info->stream, "%s", rname);
 	  else
@@ -1172,6 +1202,13 @@ print_insn_arc (bfd_vma memaddr,
 	  else
 	    (*info->fprintf_func) (info->stream, "%d", value);
 	}
+      else if (operand->flags & ARC_OPERAND_ADDRTYPE)
+        {
+          const char *addrtype = get_addrtype (value);
+          (*info->fprintf_func) (info->stream, "%s", addrtype);
+          /* A colon follow an address type.  */
+          need_comma = FALSE;
+        }
       else
 	{
 	  if (operand->flags & ARC_OPERAND_TRUNCATE
@@ -1189,8 +1226,6 @@ print_insn_arc (bfd_vma memaddr,
 		(*info->fprintf_func) (info->stream, "%#x", value);
 	    }
 	}
-
-      need_comma = TRUE;
     }
 
   return insn_len;