Add support for .extInstruction pseudo-op.

gas/
2016-04-04  Claudiu Zissulescu  <claziss@synopsys.com>

	* testsuite/gas/arc/textinsn-errors.d: New File.
	* testsuite/gas/arc/textinsn-errors.err: Likewise.
	* testsuite/gas/arc/textinsn-errors.s: Likewise.
	* testsuite/gas/arc/textinsn2op.d: Likewise.
	* testsuite/gas/arc/textinsn2op.s: Likewise.
	* testsuite/gas/arc/textinsn2op01.d: Likewise.
	* testsuite/gas/arc/textinsn2op01.s: Likewise.
	* testsuite/gas/arc/textinsn3op.d: Likewise.
	* testsuite/gas/arc/textinsn3op.s: Likewise.
	* doc/c-arc.texi (ARC Directives): Add .extInstruction
	documentation.
	* config/tc-arc.c (arcext_section): New variable.
	(arc_extinsn): New function.
	(md_pseudo_table): Add .extInstruction pseudo op.
	(attributes_t): New type.
	(suffixclass, syntaxclass, syntaxclassmod): New constant
	structures.
	(find_opcode_match): Remove arc_num_opcodes.
	(md_begin): Likewise.
	(tokenize_extinsn): New function.
	(arc_set_ext_seg): Likewise.
	(create_extinst_section): Likewise.

include/
2016-04-04  Claudiu Zissulescu  <claziss@synopsys.com>

	* opcode/arc.h (arc_num_opcodes): Remove.
	(ARC_SYNTAX_3OP, ARC_SYNTAX_2OP, ARC_OP1_MUST_BE_IMM)
	(ARC_OP1_IMM_IMPLIED, ARC_SUFFIX_NONE, ARC_SUFFIX_COND)
	(ARC_SUFFIX_FLAG): Define.
	(flags_none, flags_f, flags_cc, flags_ccf): Declare.
	(arg_none, arg_32bit_rarbrc, arg_32bit_zarbrc, arg_32bit_rbrbrc)
	(arg_32bit_rarbu6, arg_32bit_zarbu6, arg_32bit_rbrbu6)
	(arg_32bit_rbrbs12, arg_32bit_ralimmrc, arg_32bit_rarblimm)
	(arg_32bit_zalimmrc, arg_32bit_zarblimm, arg_32bit_rbrblimm)
	(arg_32bit_ralimmu6, arg_32bit_zalimmu6, arg_32bit_zalimms12)
	(arg_32bit_ralimmlimm, arg_32bit_zalimmlimm, arg_32bit_rbrc)
	(arg_32bit_zarc, arg_32bit_rbu6, arg_32bit_zau6, arg_32bit_rblimm)
	(arg_32bit_zalimm, arg_32bit_limmrc, arg_32bit_limmu6)
	(arg_32bit_limms12, arg_32bit_limmlimm): Likewise.

opcodes/
2016-04-04  Claudiu Zissulescu  <claziss@synopsys.com>

	* arc-opc.c (flags_none, flags_f, flags_cc, flags_ccf):
	Initialize.
	(arg_none, arg_32bit_rarbrc, arg_32bit_zarbrc, arg_32bit_rbrbrc)
	(arg_32bit_rarbu6, arg_32bit_zarbu6, arg_32bit_rbrbu6)
	(arg_32bit_rbrbs12, arg_32bit_ralimmrc, arg_32bit_rarblimm)
	(arg_32bit_zalimmrc, arg_32bit_zarblimm, arg_32bit_rbrblimm)
	(arg_32bit_ralimmu6, arg_32bit_zalimmu6, arg_32bit_zalimms12)
	(arg_32bit_ralimmlimm, arg_32bit_zalimmlimm, arg_32bit_rbrc)
	(arg_32bit_zarc, arg_32bit_rbu6, arg_32bit_zau6, arg_32bit_rblimm)
	(arg_32bit_zalimm, arg_32bit_limmrc, arg_32bit_limmu6)
	(arg_32bit_limms12, arg_32bit_limmlimm): Likewise.
	(arc_opcode arc_opcodes): Null terminate the array.
	(arc_num_opcodes): Remove.
	* arc-ext.h (INSERT_XOP): Define.
	(extInstruction_t): Likewise.
	(arcExtMap_instName): Delete.
	(arcExtMap_insn): New function.
	(arcExtMap_genOpcode): Likewise.
	* arc-ext.c (ExtInstruction): Remove.
	(create_map): Zero initialize instruction fields.
	(arcExtMap_instName): Remove.
	(arcExtMap_insn): New function.
	(dump_ARC_extmap): More info while debuging.
	(arcExtMap_genOpcode): New function.
	* arc-dis.c (find_format): New function.
	(print_insn_arc): Use find_format.
	(arc_get_disassembler): Enable dump_ARC_extmap only when
	debugging.

Signed-off-by: Claudiu Zissulescu <claziss@synopsys.com>

1 files changed, 48 insertions, 3 deletions

diff --git a/opcodes/arc-ext.h b/opcodes/arc-ext.h
index 9c2f4b7..fcce7e2 100644
--- a/opcodes/arc-ext.h
+++ b/opcodes/arc-ext.h
@@ -39,13 +39,14 @@
 #ifndef ARC_EXTENSIONS_H
 #define ARC_EXTENSIONS_H
 
+#include "opcode/arc.h"
+
 #define IGNORE_FIRST_OPD 1
 
 /* Define this if we do not want to encode instructions based on the
    ARCompact Programmer's Reference.  */
 #define UNMANGLED
 
-
 /* This defines the kinds of extensions which may be read from the
    ections in the executable files.  */
 enum ExtOperType
@@ -63,7 +64,6 @@ enum ExtOperType
   EXT_CORE_REGISTER_CLASS    = 9
 };
 
-
 enum ExtReadWrite
 {
   REG_INVALID,
@@ -72,6 +72,48 @@ enum ExtReadWrite
   REG_READWRITE
 };
 
+/* Macro used when generating the patterns for an extension
+   instruction.  */
+#define INSERT_XOP(OP, NAME, CODE, MASK, CPU, ARG, FLG)	\
+  do {							\
+    (OP)->name   = NAME;				\
+    (OP)->opcode = CODE;				\
+    (OP)->mask   = MASK;				\
+    (OP)->cpu    = CPU;					\
+    (OP)->class  = ARITH;				\
+    (OP)->subclass = NONE;				\
+    memcpy ((OP)->operands, (ARG), MAX_INSN_ARGS);	\
+    memcpy ((OP)->flags, (FLG), MAX_INSN_FLGS);		\
+    (OP++);						\
+  } while (0)
+
+/* Typedef to hold the extension instruction definition.  */
+typedef struct ExtInstruction
+{
+  /* Name.  */
+  char *name;
+
+  /* Major opcode.  */
+  char major;
+
+  /* Minor(sub) opcode.  */
+  char minor;
+
+  /* Flags, holds the syntax class and modifiers.  */
+  char flags;
+
+  /* Syntax class.  Use by assembler.  */
+  unsigned char syntax;
+
+  /* Syntax class modifier.  Used by assembler.  */
+  unsigned char modsyn;
+
+  /* Suffix class.  Used by assembler.  */
+  unsigned char suffix;
+
+  /* Pointer to the next extension instruction.  */
+  struct ExtInstruction* next;
+} extInstruction_t;
 
 /* Constructor function.  */
 extern void build_ARC_extmap (bfd *);
@@ -81,7 +123,10 @@ extern enum ExtReadWrite arcExtMap_coreReadWrite (int);
 extern const char * arcExtMap_coreRegName (int);
 extern const char * arcExtMap_auxRegName (long);
 extern const char * arcExtMap_condCodeName (int);
-extern const char * arcExtMap_instName (int, int, int *);
+extern const extInstruction_t *arcExtMap_insn (int, int);
+extern struct arc_opcode *arcExtMap_genOpcode (const extInstruction_t *,
+					       unsigned arc_target,
+					       const char **errmsg);
 
 /* Dump function (for debugging).  */
 extern void dump_ARC_extmap (void);