arc/nps400: Add first nps400 instructions

Adds the first few nps400 instructions.

gas/ChangeLog:

	* testsuite/gas/arc/nps400-0.d: New file.
	* testsuite/gas/arc/nps400-0.s: New file.
	* testsuite/gas/arc/nps400-1.d: New file.
	* testsuite/gas/arc/nps400-1.s: New file.

include/ChangeLog:

	* opcodes/arc.h (insn_class_t): Add BITOP type.

opcodes/ChangeLog:

	* arc-nps400-tbl.h: New file.
	* arc-opc.c: Add top level comment.
	(insert_nps_3bit_dst): New function.
	(extract_nps_3bit_dst): New function.
	(insert_nps_3bit_src2): New function.
	(extract_nps_3bit_src2): New function.
	(insert_nps_bitop_size): New function.
	(extract_nps_bitop_size): New function.
	(arc_flag_operands): Add nps400 entries.
	(arc_flag_classes): Add nps400 entries.
	(arc_operands): Add nps400 entries.
	(arc_opcodes): Add nps400 include.

3 files changed, 173 insertions, 0 deletions

diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog
index 10ebb87..811450d 100644
--- a/opcodes/ChangeLog
+++ b/opcodes/ChangeLog
@@ -1,5 +1,20 @@
 2016-03-21  Andrew Burgess  <andrew.burgess@embecosm.com>
 
+	* arc-nps400-tbl.h: New file.
+	* arc-opc.c: Add top level comment.
+	(insert_nps_3bit_dst): New function.
+	(extract_nps_3bit_dst): New function.
+	(insert_nps_3bit_src2): New function.
+	(extract_nps_3bit_src2): New function.
+	(insert_nps_bitop_size): New function.
+	(extract_nps_bitop_size): New function.
+	(arc_flag_operands): Add nps400 entries.
+	(arc_flag_classes): Add nps400 entries.
+	(arc_operands): Add nps400 entries.
+	(arc_opcodes): Add nps400 include.
+
+2016-03-21  Andrew Burgess  <andrew.burgess@embecosm.com>
+
 	* arc-opc.c (arc_flag_classes): Convert all flag classes to use
 	the new class enum values.
 
diff --git a/opcodes/arc-nps400-tbl.h b/opcodes/arc-nps400-tbl.h
new file mode 100644
index 0000000..4b715f9
--- /dev/null
+++ b/opcodes/arc-nps400-tbl.h
@@ -0,0 +1,11 @@
+/* movl<.cl> */
+{ "movh", 0x48080000, 0xf81f0000, ARC_OPCODE_NPS400 , BITOP, NONE, { NPS_R_DST, NPS_R_SRC1, NPS_UIMM16 }, { 0 }},
+{ "movh", 0x48180000, 0xf81f0000, ARC_OPCODE_NPS400 , BITOP, NONE, { NPS_R_DST, NPS_UIMM16 }, { C_NPS_CL }},
+
+/* movl<.cl> */
+{ "movl", 0x48090000, 0xf81f0000, ARC_OPCODE_NPS400 , BITOP, NONE, { NPS_R_DST, NPS_R_SRC1, NPS_UIMM16 }, { 0 }},
+{ "movl", 0x48190000, 0xf81f0000, ARC_OPCODE_NPS400 , BITOP, NONE, { NPS_R_DST, NPS_UIMM16 }, { C_NPS_CL }},
+
+/* movb<.f><.cl> */
+{ "movb", 0x48010000, 0xf80f8000, ARC_OPCODE_NPS400 , BITOP, NONE, { NPS_R_DST_3B, NPS_R_SRC1_3B, NPS_R_SRC2_3B, NPS_BITOP_DST_POS, NPS_BITOP_SRC_POS, NPS_BITOP_SIZE }, { C_NPS_F }},
+{ "movb", 0x48018000, 0xf80f8000, ARC_OPCODE_NPS400 , BITOP, NONE, { NPS_R_DST_3B, NPS_R_SRC2_3B, NPS_BITOP_DST_POS, NPS_BITOP_SRC_POS, NPS_BITOP_SIZE }, { C_NPS_F, C_NPS_CL }},
diff --git a/opcodes/arc-opc.c b/opcodes/arc-opc.c
index f126fa8..82aaf1e 100644
--- a/opcodes/arc-opc.c
+++ b/opcodes/arc-opc.c
@@ -26,6 +26,12 @@
 #include "opintl.h"
 #include "libiberty.h"
 
+/* ARC NPS400 Support: The ARC NPS400 core is an ARC700 with some custom
+   instructions.  Support for this target is available when binutils is
+   configured and built for the 'arc*-mellanox-*-*' target.  As far as
+   possible all ARC NPS400 features are built into all ARC target builds as
+   this reduces the chances that regressions might creep in.  */
+
 /* Insert RB register into a 32-bit opcode.  */
 static unsigned
 insert_rb (unsigned insn,
@@ -637,6 +643,104 @@ extract_g_s (unsigned insn ATTRIBUTE_UNUSED,
   return value;
 }
 
+/* ARC NPS400 Support: See comment near head of file.  */
+static unsigned
+insert_nps_3bit_dst (unsigned insn ATTRIBUTE_UNUSED,
+                     int value ATTRIBUTE_UNUSED,
+                     const char **errmsg ATTRIBUTE_UNUSED)
+{
+  switch (value)
+    {
+    case 0:
+    case 1:
+    case 2:
+    case 3:
+      insn |= value << 24;
+      break;
+    case 12:
+    case 13:
+    case 14:
+    case 15:
+      insn |= (value - 8) << 24;
+      break;
+    default:
+      *errmsg = _("Register must be either r0-r3 or r12-r15.");
+      break;
+    }
+  return insn;
+}
+
+static int
+extract_nps_3bit_dst (unsigned insn ATTRIBUTE_UNUSED,
+                      bfd_boolean * invalid ATTRIBUTE_UNUSED)
+{
+  int value = (insn >> 24) & 0x07;
+  if (value > 3)
+    return (value + 8);
+  else
+    return value;
+}
+
+static unsigned
+insert_nps_3bit_src2 (unsigned insn ATTRIBUTE_UNUSED,
+                      int value ATTRIBUTE_UNUSED,
+                      const char **errmsg ATTRIBUTE_UNUSED)
+{
+  switch (value)
+    {
+    case 0:
+    case 1:
+    case 2:
+    case 3:
+      insn |= value << 21;
+      break;
+    case 12:
+    case 13:
+    case 14:
+    case 15:
+      insn |= (value - 8) << 21;
+      break;
+    default:
+      *errmsg = _("Register must be either r0-r3 or r12-r15.");
+      break;
+    }
+  return insn;
+}
+
+static int
+extract_nps_3bit_src2 (unsigned insn ATTRIBUTE_UNUSED,
+                       bfd_boolean * invalid ATTRIBUTE_UNUSED)
+{
+  int value = (insn >> 21) & 0x07;
+  if (value > 3)
+    return (value + 8);
+  else
+    return value;
+}
+
+static unsigned
+insert_nps_bitop_size (unsigned insn ATTRIBUTE_UNUSED,
+                      int value ATTRIBUTE_UNUSED,
+                      const char **errmsg ATTRIBUTE_UNUSED)
+{
+  if (value < 1 || value > 32)
+    {
+      *errmsg = _("Invalid bit size, should be between 1 and 32 inclusive.");
+      return insn;
+    }
+
+  --value;
+  insn |= ((value & 0x1f) << 10);
+  return insn;
+}
+
+static int
+extract_nps_bitop_size (unsigned insn ATTRIBUTE_UNUSED,
+                       bfd_boolean * invalid ATTRIBUTE_UNUSED)
+{
+  return ((insn >> 10) & 0x1f) + 1;
+}
+
 /* Include the generic extract/insert functions.  Order is important
    as some of the functions present in the .h may be disabled via
    defines.  */
@@ -792,6 +896,13 @@ const struct arc_flag_operand arc_flag_operands[] =
   /* Fake Flags.  */
 #define F_NE   (F_H17 + 1)
   { "ne", 0, 0, 0, 1 },
+
+  /* ARC NPS400 Support: See comment near head of file.  */
+#define F_NPS_CL (F_NE + 1)
+  { "cl", 0, 0, 0, 1 },
+
+#define F_NPS_FLAG (F_NPS_CL + 1)
+  { "f", 1, 1, 20, 1 },
 };
 
 const unsigned arc_num_flag_operands = ARRAY_SIZE (arc_flag_operands);
@@ -863,6 +974,13 @@ const struct arc_flag_class arc_flag_classes[] =
 
 #define C_NE	    (C_AS + 1)
   { F_CLASS_OPTIONAL, { F_NE, F_NULL}},
+
+  /* ARC NPS400 Support: See comment near head of file.  */
+#define C_NPS_CL     (C_NE + 1)
+  { F_CLASS_REQUIRED, { F_NPS_CL, F_NULL}},
+
+#define C_NPS_F     (C_NPS_CL + 1)
+  { F_CLASS_OPTIONAL, { F_NPS_FLAG, F_NULL}},
 };
 
 /* The operands table.
@@ -1181,6 +1299,34 @@ const struct arc_operand arc_operands[] =
   /* UIMM6_5_S mask = 0000011111100000.  */
 #define UIMM6_5_S	(W6 + 1)
   {6, 0, 0, ARC_OPERAND_UNSIGNED, insert_uimm6_5_s, extract_uimm6_5_s},
+
+  /* ARC NPS400 Support: See comment near head of file.  */
+#define NPS_R_DST_3B	(UIMM6_5_S + 1)
+  { 3, 24, 0, ARC_OPERAND_IR | ARC_OPERAND_NCHK, insert_nps_3bit_dst, extract_nps_3bit_dst },
+
+#define NPS_R_SRC1_3B	(NPS_R_DST_3B + 1)
+  { 3, 24, 0, ARC_OPERAND_IR | ARC_OPERAND_DUPLICATE | ARC_OPERAND_NCHK, insert_nps_3bit_dst, extract_nps_3bit_dst },
+
+#define NPS_R_SRC2_3B	(NPS_R_SRC1_3B + 1)
+  { 3, 21, 0, ARC_OPERAND_IR | ARC_OPERAND_NCHK, insert_nps_3bit_src2, extract_nps_3bit_src2 },
+
+#define NPS_R_DST	(NPS_R_SRC2_3B + 1)
+  { 6, 21, 0, ARC_OPERAND_IR | ARC_OPERAND_NCHK, NULL, NULL },
+
+#define NPS_R_SRC1	(NPS_R_DST + 1)
+  { 6, 21, 0, ARC_OPERAND_IR | ARC_OPERAND_DUPLICATE | ARC_OPERAND_NCHK, NULL, NULL },
+
+#define NPS_BITOP_DST_POS	(NPS_R_SRC1 + 1)
+  { 5, 5, 0, ARC_OPERAND_UNSIGNED, 0, 0 },
+
+#define NPS_BITOP_SRC_POS	(NPS_BITOP_DST_POS + 1)
+  { 5, 0, 0, ARC_OPERAND_UNSIGNED, 0, 0 },
+
+#define NPS_BITOP_SIZE		(NPS_BITOP_SRC_POS + 1)
+  { 5, 10, 0, ARC_OPERAND_UNSIGNED, insert_nps_bitop_size, extract_nps_bitop_size },
+
+#define NPS_UIMM16		(NPS_BITOP_SIZE + 1)
+  { 16, 0, 0, ARC_OPERAND_UNSIGNED, NULL, NULL },
 };
 
 const unsigned arc_num_operands = ARRAY_SIZE (arc_operands);
@@ -1196,6 +1342,7 @@ const unsigned arc_NToperand = FKT_NT;
 const struct arc_opcode arc_opcodes[] =
 {
 #include "arc-tbl.h"
+#include "arc-nps400-tbl.h"
 };
 
 const unsigned arc_num_opcodes = ARRAY_SIZE (arc_opcodes);