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Andrew Bennett 7361da2c95 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.
2014-09-15 12:15:55 +01:00
bfd Add support for MIPS R6. 2014-09-15 12:15:55 +01:00
binutils Add support for MIPS R6. 2014-09-15 12:15:55 +01:00
config Fix --diable-shared --enable-plugins build breakage 2014-08-19 21:59:56 +09:30
cpu or1k: add missing l.msync, l.psync and l.psync instructions. 2014-07-20 20:26:09 +03:00
elfcpp Add support for MIPS R6. 2014-09-15 12:15:55 +01:00
etc PR external/{16327,16328}: Remove etc/configure.texi and etc/standards.texi. 2014-06-27 11:33:25 +02:00
gas Add support for MIPS R6. 2014-09-15 12:15:55 +01:00
gdb Fix set up of queue-signal.exp test. 2014-09-14 10:48:38 -07:00
gold Add NaCl (NativeClient) specific classes Target_mips_nacl and 2014-09-03 09:44:11 -07:00
gprof Fix --diable-shared --enable-plugins build breakage 2014-08-19 21:59:56 +09:30
include Add support for MIPS R6. 2014-09-15 12:15:55 +01:00
intl merge from gcc 2010-09-27 21:01:18 +00:00
ld Add support for MIPS R6. 2014-09-15 12:15:55 +01:00
libdecnumber PR c/59871 c/ * c-typeck.c (build_compound_expr): Warn even for right-hand operand of a comma expression. (emit_side_effect_warnings): Likewise. libdecnumber/ * decNumberLocal.h (UBFROMUS, UBFROMUI): Remove last argument. testsuite/ * gcc.dg/20020220-2.c: Adjust dg-warning message. * gcc.dg/pr59871.c: New test. 2014-05-08 10:18:28 -06:00
libiberty Delete temporary string within demangler even in failure cases. 2014-06-11 11:41:51 +01:00
opcodes Add support for MIPS R6. 2014-09-15 12:15:55 +01:00
readline * readline.c (bind_arrow_keys_internal): 2013-09-24 14:49:48 +00:00
sim Shadow SIM's debug_printf function 2014-08-28 11:59:09 +01:00
texinfo * texinfo/texinfo.tex: Update to version 2009-03-28.05. 2009-04-21 12:36:46 +00:00
.cvsignore
.gitattributes Add a .gitattributes file for use with git-merge-changelog 2014-07-25 18:07:23 -04:00
.gitignore Sync the root .gitignore file with GCC's. 2013-01-11 15:17:35 +00:00
ChangeLog Add mips*-img-elf* target triple. 2014-09-12 14:25:15 +01:00
compile Update automake-provided files in the toplevel. 2009-08-22 11:48:33 +00:00
config-ml.in * config-ml.in: Don't handle arc-*-elf*. 2011-03-22 20:01:13 +00:00
config.guess * config.sub, config.guess: Import from upstream. 2014-05-01 21:49:01 +01:00
config.rpath Remove freebsd1 from libtool.m4 macros and config.rpath. 2011-02-13 21:00:14 +00:00
config.sub Import config.sub from upstream config repo 2014-07-29 07:04:52 -04:00
configure Add mips*-img-elf* target triple. 2014-09-12 14:25:15 +01:00
configure.ac Add mips*-img-elf* target triple. 2014-09-12 14:25:15 +01:00
COPYING
COPYING.LIB
COPYING.LIBGLOSS 2013-01-07 Jeff Johnston <jjohnstn@redhat.com> 2013-01-07 21:39:26 +00:00
COPYING.NEWLIB 2013-10-01 Jeff Johnston <jjohnstn@redhat.com> 2013-10-01 18:14:04 +00:00
COPYING3
COPYING3.LIB
depcomp Update automake-provided files in the toplevel. 2009-08-22 11:48:33 +00:00
djunpack.bat * djunpack.bat: Use ".." quoting in Sed command, for the sake of 2009-03-27 13:37:09 +00:00
install-sh Update automake-provided files in the toplevel. 2009-08-22 11:48:33 +00:00
libtool.m4 * libtool.m4 (_LT_ENABLE_LOCK <ld -m flags>): Remove non-canonical 2013-09-20 09:51:25 +00:00
ltgcc.m4 * libtool.m4: Update to libtool 2.2.6. 2008-09-29 15:28:14 +00:00
ltmain.sh PR target/59788 2014-02-06 11:01:57 +01:00
ltoptions.m4 Sync Libtool from GCC. 2010-01-09 21:11:44 +00:00
ltsugar.m4 * libtool.m4: Update to libtool 2.2.6. 2008-09-29 15:28:14 +00:00
ltversion.m4 Sync Libtool from GCC. 2010-01-09 21:11:44 +00:00
lt~obsolete.m4 Sync Libtool from GCC. 2010-01-09 21:11:44 +00:00
MAINTAINERS MAINTAINERS: clarify policy with config/ (and other top level files) 2012-05-12 03:10:17 +00:00
Makefile.def PR sanitizer/56781 * Makefile.def: Set bootstrap=true; for host fixincludes. * configure.ac: Don't bootstrap host fixincludes unless --with-build-config=bootstrap-{a,ub}san. * Makefile.in: Regenerated. * configure: Regenerated. 2014-05-08 10:18:30 -06:00
Makefile.in PR sanitizer/56781 * Makefile.def: Set bootstrap=true; for host fixincludes. * configure.ac: Don't bootstrap host fixincludes unless --with-build-config=bootstrap-{a,ub}san. * Makefile.in: Regenerated. * configure: Regenerated. 2014-05-08 10:18:30 -06:00
Makefile.tpl PR bootstrap/58572 * Makefile.tpl (POSTSTAGE1_CXX_EXPORT): Use -isystem instead of -I for libstdc++-v3 includes if $(LEAN). * Makefile.in: Regenerated. 2014-05-08 10:18:29 -06:00
makefile.vms
missing Update automake-provided files in the toplevel. 2009-08-22 11:48:33 +00:00
mkdep
mkinstalldirs Update automake-provided files in the toplevel. 2009-08-22 11:48:33 +00:00
move-if-change Import move-if-change script from gnulib. 2011-02-12 15:47:02 +00:00
README
README-maintainer-mode Cleanups after the update to Autoconf 2.64, Automake 1.11. 2009-08-22 17:08:11 +00:00
setup.com 2009-09-01 Tristan Gingold <gingold@adacore.com> 2009-09-01 13:38:26 +00:00
src-release.sh src-release.sh: Convert src-release to a shell script 2014-08-27 13:50:06 +01:00
symlink-tree
ylwrap Update automake-provided files in the toplevel. 2009-08-22 11:48:33 +00:00

		   README for GNU development tools

This directory contains various GNU compilers, assemblers, linkers, 
debuggers, etc., plus their support routines, definitions, and documentation.

If you are receiving this as part of a GDB release, see the file gdb/README.
If with a binutils release, see binutils/README;  if with a libg++ release,
see libg++/README, etc.  That'll give you info about this
package -- supported targets, how to use it, how to report bugs, etc.

It is now possible to automatically configure and build a variety of
tools with one command.  To build all of the tools contained herein,
run the ``configure'' script here, e.g.:

	./configure 
	make

To install them (by default in /usr/local/bin, /usr/local/lib, etc),
then do:
	make install

(If the configure script can't determine your type of computer, give it
the name as an argument, for instance ``./configure sun4''.  You can
use the script ``config.sub'' to test whether a name is recognized; if
it is, config.sub translates it to a triplet specifying CPU, vendor,
and OS.)

If you have more than one compiler on your system, it is often best to
explicitly set CC in the environment before running configure, and to
also set CC when running make.  For example (assuming sh/bash/ksh):

	CC=gcc ./configure
	make

A similar example using csh:

	setenv CC gcc
	./configure
	make

Much of the code and documentation enclosed is copyright by
the Free Software Foundation, Inc.  See the file COPYING or
COPYING.LIB in the various directories, for a description of the
GNU General Public License terms under which you can copy the files.

REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info
on where and how to report problems.