[ARC] Add SYNTAX_NOP and SYNTAX_1OP for extension instructions

gas/
2016-05-03  Claudiu Zissulescu  <claziss@synopsys.com>

	* config/tc-arc.c (syntaxclass): Add SYNTAX_NOP and SYNTAX_1OP.
	(arc_extinsn): Handle new introduced syntax.
	* testsuite/gas/arc/textinsn1op.d: New file.
	* testsuite/gas/arc/textinsn1op.s: Likewise.
	* doc/c-arc.texi: Document SYNTAX_NOP and SYNTAX_1OP.

opcodes/
2016-05-03  Claudiu Zissulescu  <claziss@synopsys.com>

	* arc-ext.c (dump_ARC_extmap): Handle SYNATX_NOP and SYNTAX_1OP.
	(arcExtMap_genOpcode): Likewise.
	* arc-opc.c (arg_32bit_rc): Define new variable.
	(arg_32bit_u6): Likewise.
	(arg_32bit_limm): Likewise.

include/
2016-05-03  Claudiu Zissulescu  <claziss@synopsys.com>

	* opcode/arc.h (ARC_SYNTAX_1OP): Declare
	(ARC_SYNTAX_NOP): Likewsie.
	(ARC_OP1_MUST_BE_IMM): Update defined value.
	(ARC_OP1_IMM_IMPLIED): Likewise.
	(arg_32bit_rc, arg_32bit_u6, arg_32bit_limm): Declare.

3 files changed, 66 insertions, 7 deletions

diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog
index d166325..0313e12 100644
--- a/opcodes/ChangeLog
+++ b/opcodes/ChangeLog
@@ -1,3 +1,11 @@
+2016-05-03  Claudiu Zissulescu  <claziss@synopsys.com>
+
+	* arc-ext.c (dump_ARC_extmap): Handle SYNATX_NOP and SYNTAX_1OP.
+	(arcExtMap_genOpcode): Likewise.
+	* arc-opc.c (arg_32bit_rc): Define new variable.
+	(arg_32bit_u6): Likewise.
+	(arg_32bit_limm): Likewise.
+
 2016-05-03  Szabolcs Nagy  <szabolcs.nagy@arm.com>
 
 	* aarch64-gen.c (VERIFIER): Define.
diff --git a/opcodes/arc-ext.c b/opcodes/arc-ext.c
index 1d63813..f7d2191 100644
--- a/opcodes/arc-ext.c
+++ b/opcodes/arc-ext.c
@@ -474,12 +474,24 @@ dump_ARC_extmap (void)
 	     insn != NULL; insn = insn->next)
 	  {
 	    printf ("INST: 0x%02x 0x%02x ", insn->major, insn->minor);
-	    if (insn->flags & ARC_SYNTAX_2OP)
-	      printf ("SYNTAX_2OP");
-	    else if (insn->flags & ARC_SYNTAX_3OP)
-	      printf ("SYNTAX_3OP");
-	    else
-	      printf ("SYNTAX_UNK");
+	    switch (insn->flags & ARC_SYNTAX_MASK)
+	      {
+	      case ARC_SYNTAX_2OP:
+		printf ("SYNTAX_2OP");
+		break;
+	      case ARC_SYNTAX_3OP:
+		printf ("SYNTAX_3OP");
+		break;
+	      case ARC_SYNTAX_1OP:
+		printf ("SYNTAX_1OP");
+		break;
+	      case ARC_SYNTAX_NOP:
+		printf ("SYNTAX_NOP");
+		break;
+	      default:
+		printf ("SYNTAX_UNK");
+		break;
+	      }
 
 	    if (insn->flags & 0x10)
 	      printf ("|MODIFIER");
@@ -517,7 +529,7 @@ arcExtMap_genOpcode (const extInstruction_t *einsn,
   int count;
 
   /* Check for the class to see how many instructions we generate.  */
-  switch (einsn->flags & (ARC_SYNTAX_3OP | ARC_SYNTAX_2OP))
+  switch (einsn->flags & ARC_SYNTAX_MASK)
     {
     case ARC_SYNTAX_3OP:
       count = (einsn->modsyn & ARC_OP1_MUST_BE_IMM) ? 10 : 20;
@@ -525,6 +537,12 @@ arcExtMap_genOpcode (const extInstruction_t *einsn,
     case ARC_SYNTAX_2OP:
       count = (einsn->flags & 0x10) ? 7 : 6;
       break;
+    case ARC_SYNTAX_1OP:
+      count = 3;
+      break;
+    case ARC_SYNTAX_NOP:
+      count = 1;
+      break;
     default:
       count = 0;
       break;
@@ -755,6 +773,35 @@ arcExtMap_genOpcode (const extInstruction_t *einsn,
 		  INSN3OP_C0LL (einsn->major, einsn->minor), MINSN3OP_C0LL,
 		  arc_target, arg_32bit_zalimmlimm, lflags_ccf);
     }
+  else if (einsn->flags & ARC_SYNTAX_1OP)
+    {
+      if (einsn->suffix & ARC_SUFFIX_COND)
+	*errmsg = "Suffix SUFFIX_COND ignored";
+
+      INSERT_XOP (q, einsn->name,
+		  INSN2OP (einsn->major, 0x3F) | FIELDB (einsn->minor),
+		  MINSN2OP_0C, arc_target, arg_32bit_rc, lflags_f);
+
+      INSERT_XOP (q, einsn->name,
+		  INSN2OP (einsn->major, 0x3F) | FIELDB (einsn->minor)
+		  | (0x01 << 22), MINSN2OP_0U, arc_target, arg_32bit_u6,
+		  lflags_f);
+
+      INSERT_XOP (q, einsn->name,
+		  INSN2OP (einsn->major, 0x3F) | FIELDB (einsn->minor)
+		  | FIELDC (62), MINSN2OP_0L, arc_target, arg_32bit_limm,
+		  lflags_f);
+
+    }
+  else if (einsn->flags & ARC_SYNTAX_NOP)
+    {
+      if (einsn->suffix & ARC_SUFFIX_COND)
+	*errmsg = "Suffix SUFFIX_COND ignored";
+
+      INSERT_XOP (q, einsn->name,
+		  INSN2OP (einsn->major, 0x3F) | FIELDB (einsn->minor)
+		  | (0x01 << 22), MINSN2OP_0L, arc_target, arg_none, lflags_f);
+    }
   else
     {
       *errmsg = "Unknown syntax";
diff --git a/opcodes/arc-opc.c b/opcodes/arc-opc.c
index 9effbaf..bbefb60 100644
--- a/opcodes/arc-opc.c
+++ b/opcodes/arc-opc.c
@@ -1722,6 +1722,10 @@ const unsigned char arg_32bit_limmu6[]   = { LIMM, UIMM6_20 };
 const unsigned char arg_32bit_limms12[]  = { LIMM, SIMM12_20 };
 const unsigned char arg_32bit_limmlimm[] = { LIMM, LIMMdup };
 
+const unsigned char arg_32bit_rc[]   = { RC };
+const unsigned char arg_32bit_u6[]   = { UIMM6_20 };
+const unsigned char arg_32bit_limm[] = { LIMM };
+
 /* The opcode table.
 
    The format of the opcode table is: