[MIPS/GAS] Split Loongson EXT Instructions from loongson3a.

bfd/
	 * elfxx-mips.c (infer_mips_abiflags): Use ases instead of
	 isa_ext for infer ABI flags.
	 (print_mips_ases): Add Loongson EXT extension.

binutils/
	 * readelf.c (print_mips_ases): Add Loongson EXT extension.

elfcpp/
	 * mips.h (AFL_ASE_LOONGSON_EXT): New enum.

gas/
	 * NEWS: Mention Loongson EXTensions (EXT) support.
	 * config/tc-mips.c (options): Add OPTION_LOONGSON_EXT and
	 OPTION_NO_LOONGSON_EXT.
	 (md_longopts): Likewise.
	 (mips_ases): Define availability for EXT.
	 (mips_convert_ase_flags): Map ASE_LOONGSON_EXT to
	 AFL_ASE_LOONGSON_EXT.
	 (mips_cpu_info_table): Add ASE_LOONGSON_EXT for loongson3a.
	 (md_show_usage): Add help for -mloongson-ext and
	 -mno-loongson-ext.
	 * doc/as.texi: Document -mloongson-ext, -mno-loongson-ext.
	 * doc/c-mips.texi: Document -mloongson-ext, -mno-loongson-ext,
	 .set loongson-ext and .set noloongson-ext.
	 * testsuite/gas/mips/loongson-mmi.d: Add ASE flag.

include/
	 * elf/mips.h (AFL_ASE_LOONGSON_EXT): New macro.
	 (AFL_ASE_MASK): Update to include AFL_ASE_LOONGSON_EXT.
	 * opcode/mips.h (ASE_LOONGSON_EXT): New macro.

opcodes/
	 * mips-dis.c (mips_arch_choices): Add EXT to loongson3a
	 descriptors.
	 (parse_mips_ase_option): Handle -M loongson-ext option.
	 (print_mips_disassembler_options): Document -M loongson-ext.
	 * mips-opc.c (IL3A): Delete.
	 * mips-opc.c (LEXT): New macro.
	 (mips_opcodes): Replace IL2F|IL3A marking with LEXT for EXT
	 instructions.

1 files changed, 16 insertions, 2 deletions

diff --git a/gas/config/tc-mips.c b/gas/config/tc-mips.c
index 1f58a6d..51eee00 100644
--- a/gas/config/tc-mips.c
+++ b/gas/config/tc-mips.c
@@ -1533,6 +1533,8 @@ enum options
     OPTION_NO_LOONGSON_MMI,
     OPTION_LOONGSON_CAM,
     OPTION_NO_LOONGSON_CAM,
+    OPTION_LOONGSON_EXT,
+    OPTION_NO_LOONGSON_EXT,
     OPTION_END_OF_ENUM
   };
 
@@ -1597,6 +1599,8 @@ struct option md_longopts[] =
   {"mno-loongson-mmi", no_argument, NULL, OPTION_NO_LOONGSON_MMI},
   {"mloongson-cam", no_argument, NULL, OPTION_LOONGSON_CAM},
   {"mno-loongson-cam", no_argument, NULL, OPTION_NO_LOONGSON_CAM},
+  {"mloongson-ext", no_argument, NULL, OPTION_LOONGSON_EXT},
+  {"mno-loongson-ext", no_argument, NULL, OPTION_NO_LOONGSON_EXT},
 
   /* Old-style architecture options.  Don't add more of these.  */
   {"m4650", no_argument, NULL, OPTION_M4650},
@@ -1804,6 +1808,11 @@ static const struct mips_ase mips_ases[] = {
     OPTION_LOONGSON_CAM, OPTION_NO_LOONGSON_CAM,
     0, 0, -1, -1,
     -1 },
+
+  { "loongson-ext", ASE_LOONGSON_EXT, 0,
+    OPTION_LOONGSON_EXT, OPTION_NO_LOONGSON_EXT,
+    0, 0, -1, -1,
+    -1 },
 };
 
 /* The set of ASEs that require -mfp64.  */
@@ -19039,6 +19048,8 @@ mips_convert_ase_flags (int ase)
     ext_ases |= AFL_ASE_LOONGSON_MMI;
   if (ase & ASE_LOONGSON_CAM)
     ext_ases |= AFL_ASE_LOONGSON_CAM;
+  if (ase & ASE_LOONGSON_EXT)
+    ext_ases |= AFL_ASE_LOONGSON_EXT;
 
   return ext_ases;
 }
@@ -19786,8 +19797,8 @@ static const struct mips_cpu_info mips_cpu_info_table[] =
 
   /* MIPS 64 Release 2 */
   /* Loongson CPU core */
-  { "loongson3a",     0, ASE_LOONGSON_MMI | ASE_LOONGSON_CAM,	ISA_MIPS64R2,
-     CPU_LOONGSON_3A },
+  { "loongson3a",     0, ASE_LOONGSON_MMI | ASE_LOONGSON_CAM | ASE_LOONGSON_EXT,
+     ISA_MIPS64R2,	CPU_LOONGSON_3A },
 
   /* Cavium Networks Octeon CPU core */
   { "octeon",	      0, 0,			ISA_MIPS64R2, CPU_OCTEON },
@@ -20066,6 +20077,9 @@ MIPS options:\n\
 -mloongson-cam		generate Loongson Content Address Memory (CAM) instructions\n\
 -mno-loongson-cam	do not generate Loongson Content Address Memory Instructions\n"));
   fprintf (stream, _("\
+-mloongson-ext		generate Loongson EXTensions (EXT) instructions\n\
+-mno-loongson-ext	do not generate Loongson EXTensions Instructions\n"));
+  fprintf (stream, _("\
 -minsn32		only generate 32-bit microMIPS instructions\n\
 -mno-insn32		generate all microMIPS instructions\n"));
   fprintf (stream, _("\