Add support for MIPS R6.

bfd/
 	* aoutx.h (NAME (aout, machine_type)): Add mips32r6 and mips64r6.
 	* archures.c (bfd_architecture): Likewise.
 	* bfd-in2.h (bfd_architecture): Likewise.
 	(bfd_reloc_code_real): Add relocs BFD_RELOC_MIPS_21_PCREL_S2,
 	BFD_RELOC_MIPS_26_PCREL_S2, BFD_RELOC_MIPS_18_PCREL_S3 and
 	BFD_RELOC_MIPS_19_PCREL_S2.
 	* cpu-mips.c (arch_info_struct): Add mips32r6 and mips64r6.
 	* elf32-mips.c: Define relocs R_MIPS_PC21_S2, R_MIPS_PC26_S2
 	R_MIPS_PC18_S3, R_MIPS_PC19_S2, R_MIPS_PCHI16 and R_MIPS_PCLO16.
 	(mips_reloc_map): Add entries for BFD_RELOC_MIPS_21_PCREL_S2,
 	BFD_RELOC_MIPS_26_PCREL_S2, BFD_RELOC_MIPS_18_PCREL_S3,
 	BFD_RELOC_MIPS_19_PCREL_S2, BFD_RELOC_HI16_S_PCREL and
 	BFD_RELOC_LO16_PCREL.
 	* elf64-mips.c: Define REL, and RELA relocations R_MIPS_PC21_S2,
	R_MIPS_PC26_S2, R_MIPS_PC18_S3, R_MIPS_PC19_S2, R_MIPS_PCHI16
	and R_MIPS_PCLO16.
 	(mips_reloc_map): Add entries for BFD_RELOC_MIPS_21_PCREL_S2,
 	BFD_RELOC_MIPS_26_PCREL_S2, BFD_RELOC_MIPS_18_PCREL_S3,
 	BFD_RELOC_MIPS_19_PCREL_S2, BFD_RELOC_HI16_S_PCREL and
 	BFD_RELOC_LO16_PCREL.
 	* elfn32-mips.c: Likewise.
 	* elfxx-mips.c (MIPSR6_P): New define.
 	(mipsr6_exec_plt_entry): New array.
	(hi16_reloc_p): Add support for R_MIPS_PCHI16.
	(lo16_reloc_p): Add support for R_MIPS_PCLO16.
 	(aligned_pcrel_reloc_p): New function.
 	(mips_elf_relocation_needs_la25_stub): Add support for relocs:
 	R_MIPS_PC21_S2 and R_MIPS_PC26_S2.
 	(mips_elf_calculate_relocation): Add support for relocs:
 	R_MIPS_PC21_S2, R_MIPS_PC26_S2, R_MIPS_PC18_S3, R_MIPS_PC19_S2,
 	R_MIPS_PCHI16 and R_MIPS_PCLO16.
 	(_bfd_elf_mips_mach): Add support for mips32r6 and mips64r6.
	(mips_elf_add_lo16_rel_addend): Add support for R_MIPS_PCHI16.
 	(_bfd_mips_elf_check_relocs): Add support for relocs:
	R_MIPS_PC21_S2 and R_MIPS_PC26_S2.
 	(_bfd_mips_elf_relocate_section): Add a check for unaligned
 	pc relative relocs.
 	(_bfd_mips_elf_finish_dynamic_symbol): Add support for MIPS r6
 	plt entry.
 	(mips_set_isa_flags): Add support for mips32r6 and mips64r6.
 	(_bfd_mips_elf_print_private_bfd_data): Likewise.
 	(mips_32bit_flags_p): Add support for mips32r6.
 	* libbfd.h (bfd_reloc_code_real_names): Add entries for
 	BFD_RELOC_MIPS_21_PCREL_S2, BFD_RELOC_MIPS_26_PCREL_S2,
 	BFD_RELOC_MIPS_18_PCREL_S3 and BFD_RELOC_MIPS_19_PCREL_S2.
 	* reloc.c: Document relocs BFD_RELOC_MIPS_21_PCREL_S2,
 	BFD_RELOC_MIPS_26_PCREL_S2, BFD_RELOC_MIPS_18_PCREL_S3 and
 	BFD_RELOC_MIPS_19_PCREL_S2.

binutils/
 	* readelf.c (get_machine_flags): Add support for mips32r6 and
 	mips64r6.

elfcpp/
 	* mips.h (E_MIPS_ARCH_32R6, E_MIPS_ARCH_64R6): New enum constants.

gas/
 	* config/tc-mips.c (mips_nan2008): New static global.
	(mips_flag_nan2008): Removed.
	(LL_SC_FMT): New define.
	(COP12_FMT): Updated.
	(ISA_IS_R6): New define.
 	(ISA_HAS_64BIT_REGS): Add mips64r6.
 	(ISA_HAS_DROR): Likewise.
 	(ISA_HAS_64BIT_FPRS): Add mips32r6 and mips64r6.
 	(ISA_HAS_ROR): Likewise.
 	(ISA_HAS_ODD_SINGLE_FPR): Likewise.
 	(ISA_HAS_MXHC1): Likewise.
 	(hilo_interlocks): Likewise.
 	(md_longopts): Likewise.
	(ISA_HAS_LEGACY_NAN): New define.
 	(options): Add OPTION_MIPS32R6 and OPTION_MIPS64R6.
 	(mips_ase): Add field rem_rev.
 	(mips_ases): Updated to add which ISA an ASE was removed in.
 	(mips_isa_rev): Add support for mips32r6 and mips64r6.
 	(mips_check_isa_supports_ase): Add support to check if an ASE
 	has been removed in the specified MIPS ISA revision.
 	(validate_mips_insn): Skip '-' character.
	(macro_build): Likewise.
	(mips_check_options): Prevent R6 working with fp32, mips16,
	micromips, or branch relaxation.
	(file_mips_check_options): Set R6 floating point registers to
	64 bit.  Also deal with the nan2008 option.
 	(limited_pcrel_reloc_p): Add relocs: BFD_RELOC_MIPS_21_PCREL_S2,
 	BFD_RELOC_MIPS_26_PCREL_S2, BFD_RELOC_MIPS_18_PCREL_S3,
 	BFD_RELOC_MIPS_19_PCREL_S2, BFD_RELOC_HI16_S_PCREL and
 	BFD_RELOC_LO16_PCREL.
 	(operand_reg_mask): Add support for OP_SAME_RS_RT, OP_CHECK_PREV
	and OP_NON_ZERO_REG.
 	(match_check_prev_operand): New static function.
 	(match_same_rs_rt_operand): New static function.
	(match_non_zero_reg_operand): New static function.
 	(match_operand): Added entries for: OP_SAME_RS_RT, OP_CHECK_PREV
	and OP_NON_ZERO_REG.
 	(insns_between): Added case to deal with forbidden slots.
 	(append_insn): Added support for relocs: BFD_RELOC_MIPS_21_PCREL_S2
 	and BFD_RELOC_MIPS_26_PCREL_S2.
 	(match_insn): Add support for operands -A, -B, +' and +".  Also
 	skip '-' character.
 	(mips_percent_op): Add entries for %pcrel_hi and %pcrel_lo.
 	(md_parse_option): Add support for mips32r6 and mips64r6.  Also
	update the nan option handling.
 	(md_pcrel_from): Add cases for relocs: BFD_RELOC_MIPS_21_PCREL_S2,
 	BFD_RELOC_MIPS_26_PCREL_S2.
 	(mips_force_relocation): Prevent forced relaxation for MIPS r6.
 	(md_apply_fix): Add support for relocs: BFD_RELOC_MIPS_21_PCREL_S2,
 	BFD_RELOC_MIPS_26_PCREL_S2, BFD_RELOC_MIPS_18_PCREL_S3,
 	BFD_RELOC_MIPS_19_PCREL_S2, BFD_RELOC_HI16_S_PCREL and
 	BFD_RELOC_LO16_PCREL.
 	(s_mipsset): Add support for mips32r6 and mips64r6.
	(s_nan): Update to support the new nan2008 framework.
 	(tc_gen_reloc): Add relocs: BFD_RELOC_MIPS_21_PCREL_S2,
 	BFD_RELOC_MIPS_26_PCREL_S2, BFD_RELOC_MIPS_18_PCREL_S3,
 	BFD_RELOC_MIPS_19_PCREL_S2, BFD_RELOC_HI16_S_PCREL and
 	BFD_RELOC_LO16_PCREL.
	(mips_elf_final_processing): Updated to use the mips_nan2008.
 	(mips_cpu_info_table): Add entries for mips32r6 and mips64r6.
	(macro): Enable ldc2, sdc2, ll, lld, swc2, sc, scd, cache, pref
	macros for R6.
	(mips_fix_adjustable): Make PC relative R6 relocations relative
	to the symbol and not the section.
 	* configure.ac: Add support for mips32r6 and mips64r6.
 	* configure: Regenerate.
 	* doc/c-mips.texi: Document the -mips32r6 and -mips64r6 command line
 	options.
	* doc/as.texinfo: Likewise.

gas/testsuite/
	* gas/mips/24k-triple-stores-1.s: If testing for r6 prevent
	non-supported instructions from being tested.
	* gas/mips/24k-triple-stores-2.s: Likewise.
	* gas/mips/24k-triple-stores-3.s: Likewise.
	* gas/mips/24k-triple-stores-6.s: Likewise.
	* gas/mips/beq.s: Likewise.
	* gas/mips/eva.s: Likewise.
	* gas/mips/ld-zero-3.s: Likewise.
	* gas/mips/mips32-cp2.s: Likewise.
	* gas/mips/mips32.s: Likewise.
	* gas/mips/mips4.s: Likewise.
	* gas/mips/add.s: Don't test the add instructions if r6, and
	add padding.
	* gas/mips/add.d: Check for a triple dot not a nop at the end of the
	disassembly output.
	* gas/mips/micromips@add.d: Likewise.
	* gas/mips/mipsr6@24k-branch-delay-1.d: New file.
	* gas/mips/mipsr6@24k-triple-stores-1.d: New file.
	* gas/mips/mipsr6@24k-triple-stores-2-llsc.d: New file.
	* gas/mips/mipsr6@24k-triple-stores-2.d: New file.
	* gas/mips/mipsr6@24k-triple-stores-3.d: New file.
	* gas/mips/mipsr6@24k-triple-stores-6.d: New file.
	* gas/mips/mipsr6@add.d: New file.
	* gas/mips/mipsr6@attr-gnu-4-1-msingle-float.l: New file.
	* gas/mips/mipsr6@attr-gnu-4-1-msingle-float.s: New file.
	* gas/mips/mipsr6@attr-gnu-4-1-msoft-float.l: New file.
	* gas/mips/mipsr6@attr-gnu-4-1-msoft-float.s: New file.
	* gas/mips/mipsr6@attr-gnu-4-2-mdouble-float.l: New file.
	* gas/mips/mipsr6@attr-gnu-4-2-mdouble-float.s: New file.
	* gas/mips/mipsr6@beq.d: New file.
	* gas/mips/mipsr6@bge.d: New file.
	* gas/mips/mipsr6@bgeu.d: New file.
	* gas/mips/mipsr6@blt.d: New file.
	* gas/mips/mipsr6@bltu.d: New file.
	* gas/mips/mipsr6@branch-misc-1.d: New file.
	* gas/mips/mipsr6@branch-misc-2-64.d: New file.
	* gas/mips/mipsr6@branch-misc-2pic-64.d: New file.
	* gas/mips/mipsr6@branch-misc-4-64.d: New file.
	* gas/mips/mipsr6@cache.d: New file.
	* gas/mips/mipsr6@eva.d: New file.
	* gas/mips/mipsr6@jal-svr4pic-noreorder.d: New file.
	* gas/mips/mipsr6@jal-svr4pic.d: New file.
	* gas/mips/mipsr6@ld-zero-2.d: New file.
	* gas/mips/mipsr6@ld-zero-3.d: New file.
	* gas/mips/mipsr6@loc-swap-dis.d: New file.
	* gas/mips/mipsr6@mips32-cp2.d: New file.
	* gas/mips/mipsr6@mips32-imm.d: New file.
	* gas/mips/mipsr6@mips32.d: New file.
	* gas/mips/mipsr6@mips32r2.d: New file.
	* gas/mips/mipsr6@mips4-fp.d: New file.
	* gas/mips/mipsr6@mips4-fp.l: New file.
	* gas/mips/mipsr6@mips4-fp.s: New file.
	* gas/mips/mipsr6@mips4.d: New file.
	* gas/mips/mipsr6@mips5-fp.d: New file.
	* gas/mips/mipsr6@mips5-fp.l: New file.
	* gas/mips/mipsr6@mips5-fp.s: New file.
	* gas/mips/mipsr6@mips64.d: New file.
	* gas/mips/mipsr6@msa-branch.d: New file.
	* gas/mips/mipsr6@msa.d: New file.
	* gas/mips/mipsr6@pref.d: New file.
	* gas/mips/mipsr6@relax-swap3.d: New file.
	* gas/mips/r6-64-n32.d: New file.
	* gas/mips/r6-64-n64.d: New file.
	* gas/mips/r6-64-removed.l: New file.
	* gas/mips/r6-64-removed.s: New file.
	* gas/mips/r6-64.s: New file.
	* gas/mips/r6-attr-none-double.d: New file.
	* gas/mips/r6-n32.d: New file.
	* gas/mips/r6-n64.d: New file.
	* gas/mips/r6-removed.l: New file.
	* gas/mips/r6-removed.s: New file.
	* gas/mips/r6.d: New file.
	* gas/mips/r6.s: New file.
	* gas/mips/mipsr6@mips32-dsp.d: New file.
	* gas/mips/mipsr6@mips32-dspr2.d: New file.
	* gas/mips/mipsr6@mips32r2-ill.l: New file.
	* gas/mips/mipsr6@mips32r2-ill.s: New file.
	* gas/mips/cache.s: Add r6 instruction varients.
	* gas/mips/mips.exp: Add support for the mips32r6 and mips64r6
	architectures.  Also prevent non r6 supported tests from running.
	Finally, add in support for running the new r6 tests.
	(run_dump_test_arch): Add support for mipsr6 tests.
	(run_list_test_arch): Add support for using files of the
	form arch@testname.l .

include/elf/
 	* mips.h: Add relocs: R_MIPS_PC21_S2, R_MIPS_PC26_S2, R_MIPS_PC18_S3,
 	R_MIPS_PC19_S2, R_MIPS_PCHI16 and R_MIPS_PCLO16.
 	(E_MIPS_ARCH_32R6): New define.
 	(E_MIPS_ARCH_64R6): New define.

include/opcode/
 	* mips.h (mips_operand_type): Add new entries: OP_SAME_RS_RT,
 	OP_CHECK_PREV and OP_NON_ZERO_REG.  Add descriptions for the MIPS R6
	instruction arguments: -a, -b, -d, -s, -t, -u, -v, -w, -x, -y, -A, -B,
	 +I, +O, +R, +:, +\, +", +;
	(mips_check_prev_operand): New struct.
 	(INSN2_FORBIDDEN_SLOT): New define.
 	(INSN_ISA32R6): New define.
 	(INSN_ISA64R6): New define.
	(INSN_UPTO32R6): New define.
	(INSN_UPTO64R6): New define.
	(mips_isa_table): Add INSN_UPTO32R6 and INSN_UPTO64R6.
 	(ISA_MIPS32R6): New define.
 	(ISA_MIPS64R6): New define.
 	(CPU_MIPS32R6): New define.
 	(CPU_MIPS64R6): New define.
 	(cpu_is_member): Add cases for CPU_MIPS32R6, and CPU_MIPS64R6.

ld/
 	* ldmain.c (get_emulation): Add support for -mips32r6 and -mips64r6.

opcodes/
 	* mips-dis.c (mips_arch_choices): Add entries for mips32r6 and
 	mips64r6.
 	(parse_mips_dis_option): Allow MSA and virtualization support for
 	mips64r6.
 	(mips_print_arg_state): Add fields dest_regno and seen_dest.
 	(mips_seen_register): New function.
 	(print_insn_arg): Refactored code to use mips_seen_register
	function.  Add support for OP_SAME_RS_RT, OP_CHECK_PREV and
	OP_NON_ZERO_REG.  Changed OP_REPEAT_DEST_REG case to print out
	the register rather than aborting.
 	(print_insn_args): Add length argument.  Add code to correctly
	calculate the instruction address for pc relative instructions.
	(validate_insn_args): New static function.
 	(print_insn_mips): Prevent jalx disassembling for r6.  Use
	validate_insn_args.
	(print_insn_micromips): Use validate_insn_args.
	all the arguments are valid.
	* mips-formats.h (PREV_CHECK): New define.
 	* mips-opc.c (decode_mips_operand): Add support for -a, -b, -d, -s,
 	-t, -u, -v, -w, -x, -y, -A, -B, +I, +O, +R, +:, +\, +", +;
 	(RD_pc): New define.
 	(FS): New define.
 	(I37): New define.
 	(I69): New define.
 	(mips_builtin_opcodes): Add MIPS R6 instructions.  Exclude recoded
 	MIPS R6 instructions from MIPS R2 instructions.

4 files changed, 135 insertions, 9 deletions

diff --git a/include/elf/ChangeLog b/include/elf/ChangeLog
index b76588f7c9a..ab0a5425483 100644
--- a/include/elf/ChangeLog
+++ b/include/elf/ChangeLog
@@ -1,3 +1,11 @@
+2014-09-15  Andrew Bennett  <andrew.bennett@imgtec.com>
+	    Matthew Fortune  <matthew.fortune@imgtec.com>
+
+	* mips.h: Add relocs: R_MIPS_PC21_S2, R_MIPS_PC26_S2, R_MIPS_PC18_S3,
+	R_MIPS_PC19_S2, R_MIPS_PCHI16 and R_MIPS_PCLO16.
+	(E_MIPS_ARCH_32R6): New define.
+	(E_MIPS_ARCH_64R6): New define.
+
 2014-08-26  DJ Delorie  <dj@redhat.com>
 
 	* rl78.h (RL78_RELAXA_MASK): New.  Relax types are enums, not bits
diff --git a/include/elf/mips.h b/include/elf/mips.h
index 24c238011be..1fa69c15c31 100644
--- a/include/elf/mips.h
+++ b/include/elf/mips.h
@@ -87,7 +87,14 @@ START_RELOC_NUMBERS (elf_mips_reloc_type)
   RELOC_NUMBER (R_MIPS_TLS_TPREL_HI16, 49)
   RELOC_NUMBER (R_MIPS_TLS_TPREL_LO16, 50)
   RELOC_NUMBER (R_MIPS_GLOB_DAT, 51)
-  FAKE_RELOC (R_MIPS_max, 52)
+  /* Space to grow */
+  RELOC_NUMBER (R_MIPS_PC21_S2, 60)
+  RELOC_NUMBER (R_MIPS_PC26_S2, 61)
+  RELOC_NUMBER (R_MIPS_PC18_S3, 62)
+  RELOC_NUMBER (R_MIPS_PC19_S2, 63)
+  RELOC_NUMBER (R_MIPS_PCHI16, 64)
+  RELOC_NUMBER (R_MIPS_PCLO16, 65)
+  FAKE_RELOC (R_MIPS_max, 66)
   /* These relocs are used for the mips16.  */
   FAKE_RELOC (R_MIPS16_min, 100)
   RELOC_NUMBER (R_MIPS16_26, 100)
@@ -237,6 +244,12 @@ END_RELOC_NUMBERS (R_MIPS_maxext)
 /* -mips64r2 code.  */
 #define E_MIPS_ARCH_64R2        0x80000000
 
+/* -mips32r6 code.  */
+#define E_MIPS_ARCH_32R6        0x90000000
+
+/* -mips64r6 code.  */
+#define E_MIPS_ARCH_64R6        0xa0000000
+
 /* The ABI of the file.  Also see EF_MIPS_ABI2 above. */
 #define EF_MIPS_ABI		0x0000F000
 
diff --git a/include/opcode/ChangeLog b/include/opcode/ChangeLog
index 58d9f99955d..c7425bbcaca 100644
--- a/include/opcode/ChangeLog
+++ b/include/opcode/ChangeLog
@@ -1,3 +1,23 @@
+2014-09-15  Andrew Bennett  <andrew.bennett@imgtec.com>
+	    Matthew Fortune  <matthew.fortune@imgtec.com>
+
+	* mips.h (mips_operand_type): Add new entries: OP_SAME_RS_RT,
+	OP_CHECK_PREV and OP_NON_ZERO_REG.  Add descriptions for the MIPS R6
+	instruction arguments: -a, -b, -d, -s, -t, -u, -v, -w, -x, -y, -A, -B,
+	 +I, +O, +R, +:, +\, +", +;
+	(mips_check_prev_operand): New struct.
+	(INSN2_FORBIDDEN_SLOT): New define.
+	(INSN_ISA32R6): New define.
+	(INSN_ISA64R6): New define.
+	(INSN_UPTO32R6): New define.
+	(INSN_UPTO64R6): New define.
+	(mips_isa_table): Add INSN_UPTO32R6 and INSN_UPTO64R6.
+	(ISA_MIPS32R6): New define.
+	(ISA_MIPS64R6): New define.
+	(CPU_MIPS32R6): New define.
+	(CPU_MIPS64R6): New define.
+	(cpu_is_member): Add cases for CPU_MIPS32R6, and CPU_MIPS64R6.
+
 2014-09-03  Jiong Wang  <jiong.wang@arm.com>
 
 	* aarch64.h (AARCH64_FEATURE_LSE): New feature added.
diff --git a/include/opcode/mips.h b/include/opcode/mips.h
index aa1528ffae9..ef2616743f2 100644
--- a/include/opcode/mips.h
+++ b/include/opcode/mips.h
@@ -417,7 +417,17 @@ enum mips_operand_type {
   OP_IMM_INDEX,
 
   /* An index selected by a register, e.g. [$2].  */
-  OP_REG_INDEX
+  OP_REG_INDEX,
+
+  /* The operand spans two 5-bit register fields, both of which must be set to
+     the source register.  */
+  OP_SAME_RS_RT,
+
+  /* Described by mips_prev_operand.  */
+  OP_CHECK_PREV,
+
+  /* A register operand that must not be zero.  */
+  OP_NON_ZERO_REG
 };
 
 /* Enumerates the types of MIPS register.  */
@@ -553,6 +563,18 @@ struct mips_reg_operand
   const unsigned char *reg_map;
 };
 
+/* Describes an operand that which must match a condition based on the
+   previous operand.  */
+struct mips_check_prev_operand
+{
+  struct mips_operand root;
+
+  bfd_boolean greater_than_ok;
+  bfd_boolean less_than_ok;
+  bfd_boolean equal_ok;
+  bfd_boolean zero_ok;
+};
+
 /* Describes an operand that encodes a pair of registers.  */
 struct mips_reg_pair_operand
 {
@@ -927,6 +949,28 @@ struct mips_opcode
    "+*" 5-bit register vector element index at bit 16
    "+|" 8-bit mask at bit 16
 
+   MIPS R6:
+   "+:" 11-bit mask at bit 0
+   "+'" 26 bit PC relative branch target address
+   "+"" 21 bit PC relative branch target address
+   "+;" 5 bit same register in both OP_*_RS and OP_*_RT
+   "+I" 2bit unsigned bit position at bit 6
+   "+O" 3bit unsigned bit position at bit 6
+   "+R" must be program counter
+   "-a" (-262144 .. 262143) << 2 at bit 0
+   "-b" (-131072 .. 131071) << 3 at bit 0
+   "-d" Same as destination register GP
+   "-s" 5 bit source register specifier (OP_*_RS) not $0
+   "-t" 5 bit source register specifier (OP_*_RT) not $0
+   "-u" 5 bit source register specifier (OP_*_RT) greater than OP_*_RS
+   "-v" 5 bit source register specifier (OP_*_RT) not $0 not OP_*_RS
+   "-w" 5 bit source register specifier (OP_*_RT) less than or equal to OP_*_RS
+   "-x" 5 bit source register specifier (OP_*_RT) greater than or
+        equal to OP_*_RS
+   "-y" 5 bit source register specifier (OP_*_RT) not $0 less than OP_*_RS
+   "-A" symbolic offset (-262144 .. 262143) << 2 at bit 0
+   "-B" symbolic offset (-131072 .. 131071) << 3 at bit 0
+
    Other:
    "()" parens surrounding optional value
    ","  separates operands
@@ -934,16 +978,21 @@ struct mips_opcode
 
    Characters used so far, for quick reference when adding more:
    "1234567890"
-   "%[]<>(),+:'@!#$*&\~"
+   "%[]<>(),+-:'@!#$*&\~"
    "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
    "abcdefghijklopqrstuvwxz"
 
    Extension character sequences used so far ("+" followed by the
    following), for quick reference when adding more:
    "1234567890"
-   "~!@#$%^&*|"
-   "ABCEFGHJKLMNPQSTUVWXZ"
+   "~!@#$%^&*|:'";"
+   "ABCEFGHIJKLMNOPQRSTUVWXZ"
    "abcdefghijklmnopqrstuvwxyz"
+
+   Extension character sequences used so far ("-" followed by the
+   following), for quick reference when adding more:
+   "AB"
+   "abdstuvwxy"
 */
 
 /* These are the bits which may be set in the pinfo field of an
@@ -1051,6 +1100,8 @@ struct mips_opcode
 #define INSN2_READ_GPR_16           0x00002000
 /* Has an "\.x?y?z?w?" suffix based on mips_vu0_channel_mask.  */
 #define INSN2_VU0_CHANNEL_SUFFIX    0x00004000
+/* Instruction has a forbidden slot.  */
+#define INSN2_FORBIDDEN_SLOT        0x00008000
 
 /* Masks used to mark instructions to indicate which MIPS ISA level
    they were introduced in.  INSN_ISA_MASK masks an enumeration that
@@ -1070,10 +1121,12 @@ struct mips_opcode
 #define INSN_ISA32R2              7
 #define INSN_ISA32R3              8
 #define INSN_ISA32R5              9
+#define INSN_ISA32R6              10
 #define INSN_ISA64                11 
 #define INSN_ISA64R2              12
 #define INSN_ISA64R3              13
 #define INSN_ISA64R5              14
+#define INSN_ISA64R6              15
 /* Below this point the INSN_* values correspond to combinations of ISAs.
    They are only for use in the opcodes table to indicate membership of
    a combination of ISAs that cannot be expressed using the usual inclusion
@@ -1084,7 +1137,19 @@ struct mips_opcode
 #define INSN_ISA4_32R2            19
 #define INSN_ISA5_32R2            20
 
+/* The R6 definitions shown below state that they support all previous ISAs.
+   This is not actually true as some instructions are removed in R6.
+   The problem is that the removed instructions in R6 come from different
+   ISAs.  One approach to solve this would be to describe in the membership
+   field of the opcode table the different ISAs an instruction belongs to.
+   This would require us to create a large amount of different ISA
+   combinations which is hard to manage.  A cleaner approach (which is
+   implemented here) is to say that R6 is an extension of R5 and then to
+   deal with the removed instructions by adding instruction exclusions
+   for R6 in the opcode table.  */
+
 /* Bit INSN_ISA<X> - 1 of INSN_UPTO<Y> is set if ISA Y includes ISA X.  */
+
 #define ISAF(X) (1 << (INSN_ISA##X - 1))
 #define INSN_UPTO1    ISAF(1)
 #define INSN_UPTO2    INSN_UPTO1 | ISAF(2)
@@ -1096,10 +1161,12 @@ struct mips_opcode
 			| ISAF(3_32R2) | ISAF(4_32R2) | ISAF(5_32R2)
 #define INSN_UPTO32R3 INSN_UPTO32R2 | ISAF(32R3)
 #define INSN_UPTO32R5 INSN_UPTO32R3 | ISAF(32R5)
+#define INSN_UPTO32R6 INSN_UPTO32R5 | ISAF(32R6)
 #define INSN_UPTO64   INSN_UPTO5 | ISAF(64) | ISAF(32)
 #define INSN_UPTO64R2 INSN_UPTO64 | ISAF(64R2) | ISAF(32R2)
 #define INSN_UPTO64R3 INSN_UPTO64R2 | ISAF(64R3) | ISAF(32R3)
 #define INSN_UPTO64R5 INSN_UPTO64R3 | ISAF(64R5) | ISAF(32R5)
+#define INSN_UPTO64R6 INSN_UPTO64R5 | ISAF(64R6) | ISAF(32R6)
 
 /* The same information in table form: bit INSN_ISA<X> - 1 of index
    INSN_UPTO<Y> - 1 is set if ISA Y includes ISA X.  */
@@ -1113,11 +1180,12 @@ static const unsigned int mips_isa_table[] = {
   INSN_UPTO32R2,
   INSN_UPTO32R3,
   INSN_UPTO32R5,
-  0,
+  INSN_UPTO32R6,
   INSN_UPTO64,
   INSN_UPTO64R2,
   INSN_UPTO64R3,
-  INSN_UPTO64R5
+  INSN_UPTO64R5,
+  INSN_UPTO64R6
 };
 #undef ISAF
 
@@ -1207,6 +1275,8 @@ static const unsigned int mips_isa_table[] = {
 #define       ISA_MIPS64R3    INSN_ISA64R3
 #define       ISA_MIPS64R5    INSN_ISA64R5
 
+#define       ISA_MIPS32R6    INSN_ISA32R6
+#define       ISA_MIPS64R6    INSN_ISA64R6
 
 /* CPU defines, use instead of hardcoding processor number. Keep this
    in sync with bfd/archures.c in order for machine selection to work.  */
@@ -1239,11 +1309,13 @@ static const unsigned int mips_isa_table[] = {
 #define CPU_MIPS32R2	33
 #define CPU_MIPS32R3	34
 #define CPU_MIPS32R5	36
+#define CPU_MIPS32R6	37
 #define CPU_MIPS5       5
 #define CPU_MIPS64      64
 #define CPU_MIPS64R2	65
 #define CPU_MIPS64R3	66
 #define CPU_MIPS64R5	68
+#define CPU_MIPS64R6	69
 #define CPU_SB1         12310201        /* octal 'SB', 01.  */
 #define CPU_LOONGSON_2E 3001
 #define CPU_LOONGSON_2F 3002
@@ -1319,6 +1391,13 @@ cpu_is_member (int cpu, unsigned int mask)
     case CPU_XLR:
       return (mask & INSN_XLR) != 0;
 
+    case CPU_MIPS32R6:
+      return (mask & INSN_ISA_MASK) == INSN_ISA32R6;
+
+    case CPU_MIPS64R6:
+      return ((mask & INSN_ISA_MASK) == INSN_ISA32R6)
+	     || ((mask & INSN_ISA_MASK) == INSN_ISA64R6);
+
     default:
       return FALSE;
     }
@@ -2160,8 +2239,8 @@ extern const int bfd_mips16_num_opcodes;
 
    Characters used so far, for quick reference when adding more:
    "12345678 0"
-   "<>(),+.@\^|~"
-   "A CDEFGHI KLMN   RST V    "
+   "<>(),+-.@\^|~"
+   "ABCDEFGHI KLMN   RST V    "
    "abcd f hijklmnopqrstuvw yz"
 
    Extension character sequences used so far ("+" followed by the
@@ -2177,6 +2256,12 @@ extern const int bfd_mips16_num_opcodes;
    ""
    " BCDEFGHIJ LMNOPQ   U WXYZ"
    " bcdefghij lmn pq st   xyz"
+
+   Extension character sequences used so far ("-" followed by the
+   following), for quick reference when adding more:
+   ""
+   ""
+   <none so far>
 */
 
 extern const struct mips_operand *decode_micromips_operand (const char *);