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daily update

2010-12-18  Jeff Johnston  <jjohnstn@redhat.com>

        * COPYING.LIBGLOSS: Remove the GPL for fr30 target.

* mips-tdep.c (make_mips16_addr): New function.
(mips_elf_make_msymbol_special): Don't set the low bit in the
symbol's address.
(mips_read_pc, mips_unwind_pc, mips_addr_bits_remove): Strip bit
indicating mips16 address, if present.
(mips_write_pc): Set bit indicating mips16 address when in a mips16
function.
(mips_eabi_push_dummy_call, mips_o64_push_dummy_call): Likewise,
but for each function pointer argument to inferior function call.

* psympriv.h (struct partial_symtab) <readin>: Move field
earlier.

* reloc.c (BFD_RELOC_RX_ABS16_REV): Add.
(BFD_RELOC_RX_ABS32_REV): Add.
* bfd-in2.h: Regenerate.
* libbfd.h: Regenerate.
* elf32-rx.c (rx_reloc_map): Add them.

* config/tc-rx.c (rx_validate_fix_sub): Permit subtraction in more
cases.
(tc_gen_reloc): Fix handling of subtraction (esp wrt endianness).

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daily update

* mips-tdep.c (mips_convert_register_float_case_p)
(mips_convert_register_gpreg_case_p): New functions.
(mips_convert_register_p): Invoke new functions above.
(mips_register_to_value): Add case for fetching value shorter
than 64 bits from a 64-bit register.
(mips_value_to_register): Add case for storing value shorter
than 64 bits into a 64-bit register.

* symbols.c (symbol_clone_if_forward_ref): Call tc_new_dot_label
for new fake labels created off the dot special symbol.
* config/tc-mips.h (tc_new_dot_label): New macro.
(mips_record_label): New prototype.
* config/tc-mips.c (my_getExpression): Remove MIPS16 fake label
annotation.
(s_cons, s_float_cons, s_gpword, s_gpdword): Only clear labels
recorded once data expressions have been evaluated.
(mips_define_label): Move code to record labels over to...
(mips_record_label): ... this new function.
* doc/internals.texi: Document tc_new_dot_label.

gold: fix testsuite dependencies.

gold/:
* testsuite/Makefile.am (ifuncmain2static_LDADD)
(ifuncmain2_LDADD, ifuncmain4static_LDADD, ifuncmain4_LDADD)
(ifuncmain7static_LDADD, ifuncmain7_LDADD): New empty variables,
to avoid unneeded links against $(LDADD).
* testsuite/Makefile.in: Regenerate.

2010-12-16  Joel Borggrén-Franck  <joel.borggren.franck@gmail.com>

* python/py-value.c (value_object_type) <tp_flags>: Add
Py_TPFLAGS_BASETYPE.

NEWS: Mention new sim --map-info flag.

* dwarf2read.c (_initialize_dwarf2_read): Fix help text of
"save gdb-index" command.

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daily update

gdb
* infrun.c (save_infcall_control_state): Handle the
exception-resume breakpoint.
(restore_infcall_control_state): Likewise.
(discard_infcall_control_state): Likewise.
gdb/testsuite
2010-12-15  Jan Kratochvil  <jan.kratochvil@redhat.com>

* gdb.cp/nextoverthrow.cc (dummy): Return int 0.
(NextOverThrowDerivates) <resumebpt>: New.
(resumebpt_test): New.
(main): Call resumebpt_test.
* gdb.cp/nextoverthrow.exp: New block for test of "resumebpt".

* mips-tdep.c (mips_pseudo_register_write): Sign extend 32-bit
cooked values that are being transferred to 64-bit raw registers.
(mips_pseudo_register_read): Revise to preserve symmetry with
mips_pseudo_register_write().

2010-12-15  Greg Watson  <g.watson@computer.org>

* f-exp.y (yylex): Check entire token against keywords.

Rename "maint set python auto-load" to "set auto-load-scripts".
* NEWS: Mention it.
* python/py-auto-load.c (auto_load_scripts): Renamed from
gdbpy_auto_load.
(load_auto_scripts_for_objfile): Update.
(gdbpy_initialize_auto_load): Rename "maint set python auto-load" to
"set auto-load-scripts".

doc/
* gdb.texinfo (Startup): Document auto-loading of scripts during
startup.
(Auto-loading): Delete "maint set python auto-load on|off".
Add "set auto-load-scripts on|off".

PR gold/12324
* x86_64.cc (Target_x86_64::Scan::check_non_pic): Give an error
for R_X86_64_32 and R_X86_64_PC32.
* testsuite/Makefile.am (ver_matching_def.so): Depend on and use
ver_matching_def_pic.o.
(ver_matching_def_pic.o): New target.

Add SORT_BY_INIT_PRIORITY.

bfd/

2010-12-15  H.J. Lu  <hongjiu.lu@intel.com>

* elf.c (_bfd_elf_new_section_hook): Special handling for
.init_array/.fini_array output sections.

ld/

2010-12-15  H.J. Lu  <hongjiu.lu@intel.com>

* Makefile.am (GENSCRIPTS): Add @enable_initfini_array@.

* NEWS: Mention SORT_BY_INIT_PRIORITY.

* configure.in: Add AC_CANONICAL_BUILD.
Add --enable-initfini-array.

* genscripts.sh (ENABLE_INITFINI_ARRAY): New.

* ld.h (sort_type): Add by_init_priority.

* ld.texinfo: Document SORT_BY_INIT_PRIORITY.

* ldgram.y (SORT_BY_INIT_PRIORITY): New.
(wildcard_spec): Handle SORT_BY_INIT_PRIORITY.

* ldlang.c (get_init_priority): New.
(compare_section): Use get_init_priority for by_init_priority.

* ldlex.l (SORT_BY_INIT_PRIORITY): New.

* scripttempl/elf.sc: Support ENABLE_INITFINI_ARRAY.

* Makefile.in: Regenerated.
* aclocal.m4: Regenerated.
* config.in: Likewise.
* configure: Likewise.

ld/testsuite/

2010-12-15  H.J. Lu  <hongjiu.lu@intel.com>

* ld-elf/elf.exp (array_tests): Add init-mixed.
(array_tests_static): Likewise.
Also delete tmpdir/init-mixed.

* ld-elf/init-mixed.c: New.
* ld-elf/init-mixed.out: Likewise.

sim: add --map-info option

There are options for listing the current device/hw tree and memory
regions, but no way to find out at run time all the current mappings.
So add a new --map-info option akin to the --memory-info option which
displays all the current mappings.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

2010-12-15  Kai Tietz  <kai.tietz@onevision.com>

        * dwarf.c (display_gdb_index): Fix printf types for
        used formatters.

*** empty log message ***

(decode_opcode): RXO_branchrel is relative to the opcode's PC, not
the address following the opcode.

* rx.c (decode_opcode): For "MVFC PC,", use the address of the
opcode, not the address following the opcode.

daily update

gold: fix race in FileRead::~View.

gold/:
* fileread.cc (file_counts_lock, file_counts_initialize_lock)
(total_mapped_bytes, current_mapped_bytes, maximum_mapped_bytes):
Move definition before File_read::View member definitions.
(File_read::View::~View): Initialize and hold lock before
updating current_mapped_bytes.

* mips-tdep.c (mips_eabi_push_dummy_call): Place signed, rather
than unsigned, values in registers.

Fix typos in gold.

gold/:
* dwarf_reader.cc: Remove outdated comment.
* gold-threads.cc: Fix typo in error message.
* archive.cc: Fix typos in comments.
* archive.h: Likewise.
* arm-reloc-property.cc: Likewise.
* arm-reloc-property.h: Likewise.
* arm-reloc.def: Likewise.
* arm.cc: Likewise.
* attributes.h: Likewise.
* cref.cc: Likewise.
* ehframe.cc: Likewise.
* fileread.h: Likewise.
* gold.h: Likewise.
* i386.cc: Likewise.
* icf.cc: Likewise.
* incremental.h: Likewise.
* int_encoding.cc: Likewise.
* layout.h: Likewise.
* main.cc: Likewise.
* merge.h: Likewise.
* object.cc: Likewise.
* object.h: Likewise.
* options.cc: Likewise.
* readsyms.cc: Likewise.
* reduced_debug_output.cc: Likewise.
* reloc.cc: Likewise.
* script-sections.cc: Likewise.
* sparc.cc: Likewise.
* symtab.h: Likewise.
* target-reloc.h: Likewise.
* target.cc: Likewise.
* target.h: Likewise.
* timer.cc: Likewise.
* timer.h: Likewise.
* x86_64.cc: Likewise.

Move gdb ChangeLog entry to gdb/ChangeLog.

gdb:
* valops.c (value_one): Use get_array_bounds to compute the number
of array elements instead of dividing the length of the array by the
length of the element types.
* valarith.c (value_complement, value_neg): Likewise.

build failure on IRIX when building with Python support.

This is a nasty interaction between Python and GDB. Basically,
Python causes some macros to be unilaterally defined in order
to turns some features on:

    /* Define to activate features from IEEE Stds 1003.1-2001 */
    #define _POSIX_C_SOURCE 200112L

    /* Define to the level of X/Open that your system supports */
    #define _XOPEN_SOURCE 600

But the problem is that they turn off defines provided by some
system headers on which we depend. Namely:

  * sys/siginfo.h:

        #if _SGIAPI
        #define siginfo __siginfo
        #endif

  * sys/ucontext.h:

        #if _SGIAPI && !defined(__SGI_NOUCONTEXT_COMPAT)
        [...]
        #define fp_r            __fp_r
        [...]
        #define fp_csr          __fp_csr
        [...]
        #endif

The important macro here is _SGIAPI, defined as follow in standards.h:

        #define _SGIAPI ((defined(_SGI_SOURCE) && \
                                _NO_POSIX && _NO_XOPEN4 && _NO_XOPEN5) || \
                        (_ANSIMODE && _NO_POSIX && _NO_XOPEN4 && _NO_XOPEN5))

If one builds GDB without Python, then _SGIAPI is true, and all is fine.
But building with Python causes both _POSIX_C_SOURCE and _XOPEN_SOURCE
to trip all the _NO_[...] tests (_NO_POSIX, _NO_XOPEN4, _NO_XOPEN5).
And so we get build failures because we try to use undefined types, or
non-existent component names inside the regset structure.

The latter problem is observed only within irix5-nat.c, which means
that it is specific to IRIX.  So it's easy to write the code in a way
that it does not require the macros (just use the real component names,
rather than relying on the macros to do the translation).

The former, on the other hand, is a little trickier, because the problem
occurs inside a generic unit (procfs.c). The solution I chose was to
adjust the configure script to add -Dsiginfo=__siginfo to the CPPFLAGS
if building with python using GCC on IRIX.

We hadn't seen this sort of issue up to now because the affect units
have not been dependent on the python includes up to now.  Recent changes
have made them indirectly dependent on Python, thus triggering the issues.

gdb/ChangeLog:

        * irix5-nat.c: Replace fp_r, fp_regs and fp_scr by __fp_r, __fp_regs
        and __fp_scr respectively throughout.
        * configure.ac: Compile with -Dsiginfo=__siginfo if building with
        Python using GCC on IRIX.
        * configure: Regenerate.

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daily update

* solib-svr4.c (enable_break): Don't attempt to place breakpoints,
when attaching, on the names in bkpt_names: _start, __start, and
main.

2010-12-12  Stan Shebs  <stan@codesourcery.com>

* value.c (value_of_internalvar): Add case for trace state
variables.

* gdb.trace/tsv.exp: Test print command on trace state variables.

* ldlang.c (load_symbols): Correct last change.

* aoutx.h (aout_link_check_ar_symbols): Formatting.
* cofflink.c (coff_link_check_ar_symbols): Likewise.
* elflink.c (elf_link_add_archive_symbols): Likewise.
* pdp11.c (aout_link_check_ar_symbols): Likewise.
* xcofflink.c (xcoff_link_check_dynamic_ar_symbols,
xcoff_link_check_dynamic_ar_symbols): Likewise.

* aoutx.h (aout_link_check_archive_element): Simplify code dealing
with add_archive_element substitute BFD.
* cofflink.c (coff_link_check_archive_element): Likewise.
* ecoff.c (ecoff_link_check_archive_element): Likewise.
(ecoff_link_add_archive_symbols): Likewise.
* linker.c (generic_link_check_archive_element): Likewise.
* pdp11.c (aout_link_check_archive_element): Likewise.
* vms-alpha.c (alpha_vms_link_add_archive_symbols): Likewise.
* xcofflink.c (xcoff_link_check_archive_element): Likewise.

* aoutx.h (aout_link_check_archive_element): Free symbols from old
bfd if !keep_memory.
* cofflink.c (coff_link_check_archive_element): Likewise.
* pdp11.c (aout_link_check_archive_element): Likewise.
* xcofflink.c (xcoff_link_check_archive_element): Likewise.

*** empty log message ***

* plugin.c (bfd_plugin_mkobject): Delete.
(plugin_vec): Use bfd_false instead.

daily update

* dwarf2read.c (dwarf2_per_objfile): New member quick_file_names_table.
(dwarf2_per_cu_quick_data): Move definition down to "quick functions"
section.  Delete members lines full_names.  Rename read_lines to
no_file_data.
(quick_file_names): New struct.
(hash_file_name_entry, eq_file_name_entry): New functions.
(delete_file_name_entry, create_quick_file_names_table): New functions.
(dwarf2_read_index): Initialize quick_file_names_table.
(dw2_get_file_names): Renamed from dw2_require_line_header.
Return pointer to quick_file_names entry.  All callers updated.
(dw2_get_real_path): Renamed from dw2_require_full_path.
Replace per_cu arg with pointer to quick_file_names entry.
All callers updated.
(dw2_free_cached_file_names): New function.
(dw2_forget_cached_source_info): Call it (via htab_traverse_noresize).
(dwarf2_initialize_objfile): Initialize quick_file_names_table in
the OBJF_READNOW case.
(dwarf2_free_objfile): Rewrite freeing of quick file names tables.

Fix mail addres in ChangeLog.

* mips64obsd-tdep.c (floatformats_mips64_quad): New define.
(mips64obsd_init_abi): Set long_double_bit and long_double_format.

* sparc-tdep.c: Fix typo in comment.

Fix typos in elfedit documentation.

2010-12-12  Peter Breitenlohner  <peb@mppmu.mpg.de>

PR binutils/12306
* doc/binutils.texi: Fix typos in elfedit documentation.

Optimize for add_archive_element.

bfd/

2010-12-12  H.J. Lu  <hongjiu.lu@intel.com>

* elflink.c (elf_link_add_archive_symbols): Remove subsbfd.

ld/

2010-12-12  H.J. Lu  <hongjiu.lu@intel.com>

* ldlang.c (load_symbols): Optimize for add_archive_element.

Mark .gnu.lto_* sections with SHF_EXCLUDE.

bfd/

2010-12-12  H.J. Lu  <hongjiu.lu@intel.com>

* elf.c (special_sections_g): Add ".gnu.lto_".

gas/testsuite/

2010-12-12  H.J. Lu  <hongjiu.lu@intel.com>

* gas/elf/elf.exp: Run section9.

* gas/elf/section9.d: New.
* gas/elf/section9.s: Likewise.

*** empty log message ***

daily update

* ld-elfvers/vers25a.dsym: Really include _? in match.

opcodes/
2010-12-03 Mingming Sun <mingm.sun@gmail.com>

* mips-opc.c: (mips_builtin_opcodes): Add loongson3a mul/div and
fixed point instructions.

gas/testsuite/
2010-12-03 Mingming Sun <mingm.sun@gmail.com>

* gas/mips/loongson-3a.s, gas/mips/loongson-3a.d: New test.
* gas/mips/mips.exp: Run it.

*** empty log message ***

daily update

* dwarf2read.c: Whitespace cleanup, plus comment additions.
No code changes.

* NEWS: Document exception-handling change.

PR bootstrap/46819
* configure.ac: For --disable-libgcj clear libgcj_saved.
* configure: Rebuild.

* config/tc-mips.h (TC_ADDRESS_BYTES): New macro.
(mips_address_bytes): New prototype.
* config/tc-mips.c (mips_address_bytes): New function.

2010-12-10  Tobias Burnus  <burnus@net-b.de>

PR fortran/46540
* configure.ac: Add --disable-libquadmath and
--disable-libquadmath-support.

2010-12-10  Tristan Gingold  <gingold@adacore.com>

        * src-release (ETC_SUPPORT): add gnu-oids.texi

* binemul.h (do_ar_emul_append): Declare.
* binemul.c (any_ok): New function.
(do_ar_emul_append): Rename from do_ar_emul_default_append.  Make
global, add check arg.  Adjust callers.
(ar_emul_default_replace): Tidy.
* configure.tgt (powerpc-*-aix[5-9]*,rs6000-*-aix[5-9]*): Use
bin_aix_emulation.
* emul_aix.c (bin_aix5_emulation, ar_emul_aix_internal): Delete.
(ar_emul_aix5_append, ar_emul_aix5_replace): Delete.
(check_aix): New function.
(ar_emul_aix_append, ar_emul_aix_replace): Rewrite.

ld: elfvers tests: support symbol prefixed targets

The symbol versioning tests mix C-visible symbols and linker-visible
symbols in order to verify .symver behavior.  This works for most
people, but fail for targets that have a symbol prefix.  So add a
helper file with macros that expand gcc's __USER_LABEL_PREFIX__ as
necessary and convert all .symver users over to it.

Now that the tests are usable on prefixed targets, update the tests
to take into account an optional leading underscore.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

* config.bfd: Configure rs6000-*-aix* as for powerpc-*-aix*.
Add aix5coff64_vec to powerpc ELF entries.

*** empty log message ***

* config/tc-mips.c (mips_ip): Remove dead format specifier code.

gas/
* config/tc-mips.c (file_ase_mips16): Adjust comment.
(append_insn): Update file_ase_mips16.
(mips_after_parse_args): Don't set file_ase_mips16 here.

gas/testsuite/
* gas/mips/elf_ase_mips16.d: Update test for new MIPS16 ASE flag
semantics.
* gas/mips/elf_ase_mips16-2.d: New test.
* gas/mips/nop.s: Source for the new test.
* gas/mips/mips.exp: Run the new test.

binutils/testsuite/
* lib/binutils-common.exp (regexp_diff): Implement inverse
matching, requested by `!'.

* config/tc-mips.c (macro)
<M_MSGSND, M_MSGLD, M_MSGLD_T, M_MSGWAIT, M_MSGWAIT_T>: Remove
dedicated return points.

* config/tc-mips.c (macro) <M_DEXT, M_DINS>: Correct types used
for pos and size.

* gas/mips/jal-svr4pic.d: Also use wildcard address matching in
relocations.
* gas/mips/mips1@jal-svr4pic.d: Likewise.
* gas/mips/jal-svr4pic-noreorder.d: Likewise.
* gas/mips/mips1@jal-svr4pic-noreorder.d: Likewise.

gas/
* config/tc-mips.c (macro) <ld_st>: Don't load a zero into an
auxiliary register when using a signed 16-bit constant offset.

gas/testsuite/
* gas/mips/ldstla-32.d: Update according to a 16-bit constant
offset optimization.
* gas/mips/ldstla-32-mips3.d: Likewise.
* gas/mips/ldstla-32-shared.d: Likewise.
* gas/mips/ldstla-32-mips3-shared.d: Likewise.

* config/tc-mips.c (mips_ip): Remove lastregno's
preinitialization.

* layout.cc (Layout::layout_gnu_stack): Add warnings for executable
stack.
* layout.h (Layout::layout_gnu_stack): Add pointer to Object
parameter; change all callers.
* object.cc (Sized_relobj::do_layout): Adjust call to layout_gnu_stack.
* options.h (warn_execstack): New option.

* config/tc-mips.c (mips_ip) <'('>: Don't let '4', '5' or '-'
as a base register specifier.

daily update

* config/tc-mips.c (macro) <M_S_DOB>: Fix the placement of code.

* config/tc-mips.c (mips_ip) <'u'>: Report the value of the LUI
argument complained about; reword the message.

* config/tc-mips.c (macro)
<M_BGTUL_I, M_BGTU_I, M_BLEUL_I, M_BLEU_I>: Fix the constant
used to compare against for the always-false/true case.

* config/tc-mips.c (macro): Remove a trailing 0 from NOP
requests.

* config/tc-mips.c (macro): Use EXTRACT_OPERAND to get register
numbers.

* config/tc-mips.c (macro): Replace 0 with ZERO in macro_build
and move_register calls referring to $0.

gas/
* config/tc-mips.c (macro, mips_ip): Correct message
capitalization.

gas/testsuite/
* gas/mips/at-2.l: Adjust according to message capitalization
fixes.
* gas/mips/illegal.l: Likewise.
* gas/mips/jalr.l: Likewise.
* gas/mips/octeon-ill.l: Likewise.
* gas/mips/tls-ill.l: Likewise.

* mi/mi-parse.c (mi_parse): Wrong error message.

* config/tc-z80.c (md_apply_fix): Rename var to fix shadow warning.

* symfile.h (quick_symbol_functions): Clarify usage of
map_symbol_filenames.

gdb
* mi/mi-parse.h (mi_parse): Update.
* mi/mi-parse.c (mi_parse_cleanup): New function.
(mi_parse): Add 'token' argument.  Throw exception on error.
* mi/mi-main.c (mi_print_exception): New function.
(mi_execute_command): Use mi_print_exception.  Catch exceptions
from mi_parse.
gdb/testsuite
* gdb.base/interp.exp: Add regression test.

* config/tc-mips.c (macro_build, macro, mips_ip, md_apply_fix):
Fix formatting.

* gas/mips/ldstla-32.d: Use wildcard address matching.
* gas/mips/ldstla-32-mips3.d: Likewise.
* gas/mips/ldstla-32-shared.d: Likewise.
* gas/mips/ldstla-32-mips3-shared.d: Likewise.

gdb
PR c++/9593:
* thread.c (clear_thread_inferior_resources): Call
delete_longjmp_breakpoint.
* infrun.c (handle_inferior_event): Handle exception breakpoints.
(handle_inferior_event): Likewise.
(insert_exception_resume_breakpoint): New function.
(check_exception_resume): Likewise.
* inferior.h (delete_longjmp_breakpoint_cleanup): Declare.
* infcmd.c (delete_longjmp_breakpoint_cleanup): No longer static.
(step_1): Set thread's initiating frame.
(until_next_continuation): New function.
(until_next_command): Support exception breakpoints.
(finish_command_continuation): Delete longjmp breakpoint.
(finish_forward): Support exception breakpoints.
* gdbthread.h (struct thread_info) <initiating_frame>: New field.
* breakpoint.h (enum bptype) <bp_exception, bp_exception_resume,
bp_exception_master>: New constants.
(struct bpstat_what) <is_longjmp>: New field.
(set_longjmp_breakpoint): Update.
* breakpoint.c (create_exception_master_breakpoint): New function.
(update_breakpoints_after_exec): Handle bp_exception_master.  Call
create_exception_master_breakpoint.
(print_it_typical): Handle bp_exception_master, bp_exception.
(bpstat_stop_status): Handle bp_exception_master.
(bpstat_what): Handle bp_exception_master, bp_exception,
bp_exception_resume.
(bptype_string): Likewise.
(print_one_breakpoint_location): Likewise.
(allocate_bp_location): Likewise.
(set_longjmp_breakpoint): Handle exception breakpoints.  Change
interface.
(delete_longjmp_breakpoint): Handle exception breakpoints.
(mention): Likewise.
(struct until_break_command_continuation_args) <thread_num>: New
field.
(until_break_command_continuation): Call
delete_longjmp_breakpoint.
(until_break_command): Support exception breakpoints.
(delete_command): Likewise.
(breakpoint_re_set_one): Likewise.
(breakpoint_re_set): Likewise.
gdb/testuite
* gdb.java/jnpe.java: New file.
* gdb.java/jnpe.exp: New file.
* gdb.cp/nextoverthrow.exp: New file.
* gdb.cp/nextoverthrow.cc: New file.

bfd/binutils/gas/gprof/ld/libiberty/opcodes: add .gitignore

This seems to cover a few random targets as well as --enable-targets=all.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

*** empty log message ***

daily update

* gdbtypes.h (TYPE_IS_OPAQUE): Reformat.

* gdbtypes.c (check_typedef): Tweak comment.

PR symtab/12302
* dwarf2read.c (struct psymtab_cu_index_map): New struct.
(hash_psymtab_cu_index, eq_psymtab_cu_index): New functions.
(struct addrmap_index_data): New struct.
(add_address_entry): Remove arg `pst', new args `start', `end'.
(add_address_entry_worker, write_address_map): New functions.
(write_psymtabs_to_index): Address table generation moved to
write_address_map.  Build a table mapping psymtab to CU index
to pass to it.

* dwarf2read.c (write_psymtabs_to_index): When stat fails, pass file
name to perror.

* symfile.h (quick_symbol_functions): Clarify usage of
expand_symtabs_with_filename.
* dwarf2read.c (dw2_expand_symtabs_with_filename): Only iterate over
comp units, ignore type units.

* dwarf2read.c (dw2_expand_symtabs_with_filename): Use FILENAME_CMP.

merge from gcc