[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, 11 insertions, 1 deletions

diff --git a/opcodes/mips-dis.c b/opcodes/mips-dis.c
index 832d4dc684d..277d79d41ca 100644
--- a/opcodes/mips-dis.c
+++ b/opcodes/mips-dis.c
@@ -630,7 +630,7 @@ const struct mips_arch_choice mips_arch_choices[] =
     NULL, 0, mips_cp1_names_numeric, mips_hwr_names_numeric },
 
   { "loongson3a",   1, bfd_mach_mips_loongson_3a, CPU_LOONGSON_3A,
-    ISA_MIPS64R2 | INSN_LOONGSON_3A, ASE_LOONGSON_MMI | ASE_LOONGSON_CAM,
+    ISA_MIPS64R2, ASE_LOONGSON_MMI | ASE_LOONGSON_CAM | ASE_LOONGSON_EXT,
     mips_cp0_names_numeric, NULL, 0, mips_cp1_names_mips3264,
     mips_hwr_names_numeric },
 
@@ -948,6 +948,12 @@ parse_mips_ase_option (const char *option)
       return TRUE;
     }
 
+  if (CONST_STRNEQ (option, "loongson-ext"))
+    {
+      mips_ase |= ASE_LOONGSON_EXT;
+      return TRUE;
+    }
+
   return FALSE;
 }
 
@@ -2603,6 +2609,10 @@ static struct
 		  N_("Recognize the Loongson Content Address Memory (CAM) "
 		     " instructions.\n"),
 		  MIPS_OPTION_ARG_NONE },
+  { "loongson-ext",
+		  N_("Recognize the Loongson EXTensions (EXT) "
+		     " instructions.\n"),
+		  MIPS_OPTION_ARG_NONE },
   { "gpr-names=", N_("Print GPR names according to specified ABI.\n\
                   Default: based on binary being disassembled.\n"),
 		  MIPS_OPTION_ARG_ABI },