merge from gcc

Add missing ChangeLog entries.

* dwarf2read.c (fixup_partial_die): Do not set dummy name for
anonymous class partial DIEs.

2010-09-09  Rafael Espindola  <espindola@google.com>

* layout.cc (Layout::attach_allocated_section_to_segment): Don't put
sections with different PF_X flags in the same segment.
(Layout::find_first_load_seg): Search all segments to find the first
one.
* options.h (rosegment): New.

* configure.ac: Add --enable-inprocess-agent option.
* configure: Rebuilt.

* dwarf.c (decode_location_expression): Fix data adjustment
for DW_OP_GNU_implicit_pointer in v3+.

* gas/config/tc-arm.c (arm_cpus): Add cortex-a15 entry.
* gas/doc/c-arm.texi: Document -mcpu=cortex-a15.

    * gas/config/tc-m68k.c (tc_gen_reloc): Handle references to defined
        weak symbols first if generating an a.out object.

binutils/
2010-09-09  Tristan Gingold  <gingold@adacore.com>

* NEWS: Add entry to NEWS for hppa/som.

ld/
2010-09-09  Tristan Gingold  <gingold@adacore.com>

* NEWS: Add a entry for alpha-vms.

Fix PR number in previous delta.

    PR gas/11931
        * gas/mn10300/pr11931.s: New file: Test case.
        * gas/mn10300/pr11931.d: New file: Expected output.
        * gas/mn10300/basic.exp: Run the new test.

* dwarf.h (debug_info): Add offset_info and dwarf_version fields.
* dwarf.c (decode_location_expression): Add offset_size and
dwarf_version arguments.  Prefix DIE offset with 0x for
DW_OP_call{2,4,_ref}.  Fix up DW_OP_call_ref operand size,
complain if in frame info section.  Handle
DW_OP_GNU_implicit_pointer.
(read_and_display_attr_value, display_debug_loc,
display_debug_frames): Adjust decode_location_expression callers.
(process_debug_info): Save offset_size and dwarf_version values
into debug_information array.

* dwarf2.h (DW_OP_GNU_implicit_pointer): New.

* elflink.c (bfd_elf_final_link): Correct calculation of
max_external_reloc_size.

    * config/tc-arm.c (md_apply_fix): Check if widened add, sub are
        flag-setting and handle accordingly.

        * gas/arm/addsw-bad.s: New file.
        * gas/arm/addsw-bad.l: New file.
        * gas/arm/addsw-bad.d: New file.

    PR gas/11972
        * config/tc-arm.c (parse_big_immediate): Allow for bignums being
        extended to the size of a .octa.

2010-09-03  Rafael Espindola  <espindola@google.com>

      * layout.cc (Layout::set_segment_offsets): Always advance to a new page.

*** empty log message ***

daily update

2010-09-08  Doug Kwan  <dougkwan@google.com>

* arm.cc (Arm_exidx_cantunwind::do_print_to_mapfile): New method.
(Arm_relobj::do_relocate_sections): Add new parameter for output
file to match the parent.
(Target_arm::scan_reloc_section_for_stubs): Use would-be final values
of local symbols instead of input values.  Update code to track
changes in gold::relocate_section.
* object.cc (Sized_relobj::compute_final_local_value): New methods.
(Sized_relobj::compute_final_local_value_internal): New methods.
(Sized_relobj::do_finalize_local_symbols): Move code from loop
body into private version of Sized_relobj::compute_final_local_value.
Call the inline method.
* object.h (Symbol_value::Symbol_value): Define destructor.  Free
merged symbol value if there is one.
(Symbol_value::has_output_value): New method defintiion.
(Sized_relobj::Compute_final_local_value_status): New enum type.
(Sized_relobj::compute_final_local_value): New methods.
(Sized_relobj::compute_final_local_value_internal): New methods.
* Makefile.am (check_SCRIPTS): Add arm_branch_out_of_range.sh
and arm_cortex_a8.sh.
(thumb_bl_out_of_range_local, arm_cortex_a8_b_cond, arm_cortex_a8_bl,
arm_cortex_a8_blx, arm_cortex_a8_local, arm_corte_a8_local_reloc):
New tests.
* Makefile.in: Regenerate.
* testsuite/arm_bl_out_of_range.s: Update test.
* testsuite/thumb_bl_out_of_range.s: Ditto.
* testsuite/thumb_blx_out_of_range.s: Ditto.
* testsuite/arm_branch_out_of_range.sh: New file.
* testsuite/arm_cortex_a8.sh: Ditto.
* testsuite/arm_cortex_a8_b.s: Ditto.
* testsuite/arm_cortex_a8_b_cond.s: Ditto.
* testsuite/arm_cortex_a8_b_local.s: Ditto.
* testsuite/arm_cortex_a8_bl.s: Ditto.
* testsuite/arm_cortex_a8_blx.s: Ditto.
* testsuite/arm_cortex_a8_local.s: Ditto.
* testsuite/arm_cortex_a8_local_reloc.s: Ditto.
* testsuite/thumb_bl_out_of_range_local.s: Ditto.

* gdb.cp/templates.exp (test_template_args): Allow "struct".

* dwarf2read.c (dwarf2_compute_name): Check that the first
argument is a pointer.

* dwarf2read.c (read_func_scope, read_structure_type)
(read_common_block): Check for a NULL return from new_symbol.

2010-09-08  Rafael Espindola  <espindola@google.com>

* Makefile.am (memory_test.stdout): Run readelf with -W
* Makefile.in: Regenerate.
* testsuite/memory_test.sh: Make the regexps accept both 32 and 64 bit outputs.

2010-09-08  Rafael Espindola  <espindola@google.com>

* script-sections.cc (Script_sections::add_memory_region): Convert
field precision to int.
* script.cc (script_set_section_region, script_set_section_region):
Convert field precision to int.

gdb/
* dwarf2read.c (dwarf2_read_index): Return on no SEC_HAS_CONTENTS.

gdb/
* dwarf2read.c (read_structure_type): Move processing of
fields and member functions from here...
(process_structure_scope): ... to here.

gdb/testsuite/
* gdb.cp/templates.cc (Empty, FunctionArg): New classes.
(FunctionArg::method): New function.
(empty, arg): New variables.
(main): Call arg.method.
* gdb.cp/templates.exp (test_template_args): New function.
(do_tests): Call it.

* gnu-v3-abi.c (gnuv3_print_method_ptr): Do not use
the domain type.
(gnuv3_make_method_ptr): Likewise.

2010-09-08  Rafael Espindola  <espindola@google.com>

* arm.cc (do_finalize_sections): Create the __exidx_start and
__exdix_end symbols even when the section is missing.

* breakpoint.c (create_breakpoint): Add missing _().

* dwarf2-frame.h (dwarf2_frame_build_info): Delete, unused.

* gdb.threads/threxit-hop-specific.exp: Use "continue" instead
of "next" to proceed over pthread_exit call.

* config/tc-arm.c (create_neon_reg_alias): Deal with case
sensitivity.

* gdb.base/maint.exp: Avoid wildcards against potentially very long
"maint print statistics" output to prevent expect timeouts.

Revert:
2010-09-01  Tom Tromey  <tromey@redhat.com>
* dwarf2read.c, gdbtypes.c, psymtab.c, symfile.h, symtab.c,
symtab.h: Revert earlier change.

    * README: Remove claim that MEMORY is not supported.
        * expression.cc (script_exp_function_origin)
        (script_exp_function_length): Move from here to ...
        * script.cc: ... here.
        (script_set_section_region, script_add_memory)
        (script_parse_memory_attr, script_include_directive): New
        functions.
        * script-sections.cc
        (class Memory_region): New class.
        (class Output_section_definition): Add set_memory_region,
        set_section_vma, set_section_lma and get_section_name methods.
        (class Script_Sections): Add add_memory_region,
        find_memory_region, find_memory_region_origin,
        find_memory_region_length and set_memory_region methods.
        Have set_section_addresses method walk the list of set memory
        regions.
        Extend the print methos to display memory regions.
        * script-sections.h: Add prototypes for new methods.
        Add enum for MEMORY region attributes.
        * yyscript.y: Add support for parsing MEMORY regions.
        * script-c.h: Add prototypes for new functions.
        * testsuite/Makefile.am: Add test of MEMORY region functionality.
        * testsuite/Makefile.in: Regenerate.
        * testsuite/memory_test.sh: New script.
        * testsuite/memory_test.s: New assembler source file.
        * testsuite/memory_test.t: New linker script.

    PR gas/11973
        * config/tc-mn10300.c (md_convert_frag): Zero out top two bytes of
        long call instruction's displacement.

*** empty log message ***

daily update

merge from gcc

Add missing files.

    * ldwrite.c (clone_section): Call bfd_copy_private_section_data on
        newly cloned section.
        * ld-x86-64/split-by-file.rd: New test.
        * ld-x86-64/split-by-file1.s: New test source code.
        * ld-x86-64/split-by-file2.s: New test source code.
        * ld-x86-64/x86-64.exp: Run the new test.
        * readelf.c (process_section_headers): Mention meaning of 'l'
        section flag for x86-64 targets.

Fix custom bcache hash regression.

2010-09-09  Sami Wagiaalla  <swagiaal@redhat.com>

* psymtab.c (add_psymbol_to_bcache): Initialize
obj_section.
memset psymbol.ginfo.value to 0.

*** empty log message ***

daily update

* peXXigen.c: Whitespace.
(pe_print_idata): Correct section limit calculations.  Tidy array
indexing.
(_bfd_XX_print_ce_compressed_pdata): Don't leak memory.

gdb/testsuite/
* gdb.base/printcmds.exp (test_float_accepted): Import gdb_prompt.
Move here, negate and extend by XFAIL the "p 0x1.1" test from ...
(test_float_rejected): ... here.
* gdb.java/jv-print.exp (test_float_accepted): Import gdb_prompt.
Move here, negate and extend by XFAIL the "p 0x1.1" test from ...
(test_float_rejected): ... here.
* gdb.objc/print.exp (test_float_accepted): Import gdb_prompt.
Move here, negate and extend by XFAIL the "p 0x1.1" test from ...
(test_float_rejected): ... here.
* gdb.pascal/print.exp (test_float_accepted): Import gdb_prompt.
Move here, negate and extend by XFAIL the "p 0x1.1" test from ...
(test_float_rejected): ... here.

Sync bootstrap-lto.mk and dfp.m4 with gcc.

2010-09-06  Yao Qi  <yao@codesourcery.com>

* linux-low.c (linux_kill): Remove unused variable.
(linux_stabilize_threads): Likewise.
* server.c (start_inferior): Likewise.
(queue_stop_reply_callback): Likewise.
* tracepoint.c (do_action_at_tracepoint): Likewise.

2010-09-06  Yao Qi  <yao@codesourcery.com>

* linux-low.c (maybe_move_out_of_jump_pad): Restore current_inferior
on return.

* infrun.c (resume): Extend comment on ignoring single-step
requests on vfork parents waiting for a vfork-done.

gdb/
* corelow.c (core_open): Use target_signal_from_host if CORE_GDBARCH
is NULL.
* fork-child.c (startup_inferior) <resume_signal>: Use enum
target_signal type.
* linux-nat.c (linux_nat_resume): Use target_signal_to_host before
calling strsignal.  Use enum target_signal type for saved_signo.
(linux_handle_extended_wait) <signo>: Use enum target_signal type.
(linux_nat_wait_1): Use enum target_signal type for signo.  Use
target_signal_to_host before calling strsignal.
* remote-m32r-sdi.c (m32r_wait, m32r_detach): Replace 0 by
TARGET_SIGNAL_0.

gdb/gdbserver/
* target.c (mywait) <TARGET_WAITKIND_EXITED>: Fix to use INTEGER.

gdb/
* common/signals.c (ANY): Remove.
(SET): No longer use ANY.

include/gdb/
* signals.def: Replace all ANY uses by SET with specific numbers.
* signals.h (ANY): Remove.

2010-09-06  Yao Qi  <yao@codesourcery.com>

* infrunc(resume): When inferior is waiting_for_vfork_done,
clear step and don't use displaced stepping.

* Makefile.in (install-only): Replace $IPA_DEPFILES with
"$(IPA_DEPFILES)".

daily update

*** empty log message ***

*** empty log message ***

daily update

* breakpoint.c (can_use_hardware_watchpoint): Handle the first
value specially.

testsuite/
* gdb.base/watchpoint.exp: Call test_inaccessible_watchpoint
before disabling hardware watchpoints.
(test_inaccessible_watchpoint): Check that hardware watchpoints
are used.  Test for watchpoints on a constant address.

gdb/
Code cleanup - split print_stop_reason.
* infrun.c (enum inferior_stop_reason): Remove.
(print_stop_reason): Remove by splitting into ...
(print_exited_reason, print_signal_exited_reason)
(print_no_history_reason, print_signal_received_reason)
(print_end_stepping_range_reason): ... these new functions.  Update
the preceding comment.
(handle_inferior_event): Change the calls to print_exited_reason,
print_signal_exited_reason, print_no_history_reason,
print_signal_received_reason, print_end_stepping_range_reason.
(handle_step_into_function, handle_step_into_function_backward):
Change the calls to print_end_stepping_range_reason.

*** empty log message ***

daily update

Check flag_code instead of use_rela_relocations for 64bit.

gas/

2010-09-03  H.J. Lu  <hongjiu.lu@intel.com>

PR gas/11974
* config/tc-i386.c (i386_finalize_immediate): Check flag_code
instead of use_rela_relocations for 64bit.

gas/testsuite/

2010-09-03  H.J. Lu  <hongjiu.lu@intel.com>

PR gas/11974
* gas/i386/immed64.s: Add more movabs tests.
* gas/i386/immed64.d: Updated.

binutils/
* dwarf.c (regname): New declaration.
(decode_location_expression): Print for registers also regname output.

binutils/testsuite/
* binutils-all/objdump.W: Update DW_OP_reg5 expected output.

gas/testsuite/
* gas/elf/dwarf2-1.d: Update DW_OP_reg5 expected output.
* gas/elf/dwarf2-2.d: Likewise.
* gas/i386/dw2-compress-1.d: Likewise.

gdb/
* breakpoint.c (save_breakpoints): Use RETURN_MASK_ALL.
* cli-out.c: Include vec.h.
(cli_field_fmt, cli_spaces, cli_text, cli_message, cli_flush): New
variable stream, initialize it, use it.
(cli_redirect): New function comment.  Replace the stream and
original_stream fields by the new streams field.  Remove the
original_stream != NULL conditional, assert error on NULL instead.
(out_field_fmt, field_separator): New variable stream, initialize it, use it.
(cli_out_data_ctor): Assert non-NULL stream.  Replace the stream and
original_stream fields by the new streams field.
(cli_out_set_stream): Replace the stream field by the new streams
field.
* cli-out.h: Include vec.h.
(ui_filep): New typedef, call DEF_VEC_P for it.
(struct cli_ui_out_data): Replace the stream and original_stream
fields by the new streams field.
* cli/cli-logging.c (set_logging_redirect): Call ui_out_redirect with
NULL first.  Extend the comment.
(handle_redirections): Call ui_out_redirect with output.
* python/py-breakpoint.c (bppy_get_commands): Move ui_out_redirect
calls outside of the TRY_CATCH block.

gdb/testsuite/
* gdb.base/ui-redirect.exp: New file.

    * gas/cfi/cfi-i386.d: Use objdump -Wf instead of readelf.
        * gas/cfi/cfi-i386.s: Remove .type directives.
        * gas/cfi/reloc-pe-i386.d: Adjust test for i386.

libdecnumber/

2010-09-03  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>

    * configure.ac: Use the GCC_AC_ENABLE_DECIMAL_FLOAT macro.
    * Makefile.in: Add aclocal.m4 dependency to dfp.m4.
    * configure: Regenerate.
    * aclocal.m4: Regenerate.
config/

2010-09-03  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>

    * dfp.m4: New file.

GDB 7.2 released.

daily update

*** empty log message ***

Select 32-bit pei for 64-bit pei configurations.

Back out the change introducing the "record pic" feature.

gdb/ChangeLog:

Back out the following change:
| 2010-06-29  Hui Zhu  <teawater@gmail.com>
| * record.c (set_record_pic_cmdlist,
| show_record_pic_cmdlist): New variables.
| (set_record_pic_command,
| show_record_pic_command): New functions.
| (record_pic_function, record_pic_line, record_pic_enum,
| set_record_pic_type, record_pic_hide_nofunction,
| record_pic_hide_nosource, record_pic_hide_same): New variables.
| (record_pic_fputs): New function.
| (function_list, node_list, edge_list): New struct.
| (function_list, node_list, edge_list): New variables.
| (record_pic_cleanups, record_pic_node,
| record_pic_edge, cmd_record_pic): New functions.
| (_initialize_record): Add new commands for record pic.

* gas/cfi/reloc-pe-i386.d, gas/cfi/reloc-pe-i386.s: New test.

* dw2gencfi.c (TC_DWARF2_EMIT_OFFSET): Provide default.
(output_fde): Use it.  Make sure to fully init exp before using it.
testsuite/
* gas/cfi/cfi-common-1.d: Use objdump instead of readelf to dump.
* gas/cfi/cfi-common-2.d, gas/cfi/cfi-common-3.d,
gas/cfi/cfi-common-4.d, gas/cfi/cfi-common-6.d,
gas/cfi/cfi-common-7.d, gas/cfi/cfi-x86_64.d: Likewise.
* gas/cfi/cfi-x86_64.s: Remove .type directives.
* gas/cfi/cfi.exp: Run for pecoff objects too.
* gas/cfi/reloc-pe-i386.d, gas/cfi/reloc-pe-i386.s: New test.

* dwarf.c (init_dwarf_regnames_i386, init_dwarf_regnames_x86_64): New.
(init_dwarf_regnames): Use them.
* dwarf.h: Declare them.
* objdump.c (dump_dwarf): Use bfd_get_arch + bfd_get_mach to set up
the regnames, rather than using elf_machine_code.

    * objdump.c (dump_dwarf): Use bfd_arch_bits_per_address.

Fix ChangeLog entries cli-logging.c -> cli/cli-logging.c .

* config.in, configure: Regenerated.
* configure.ac: Check for waitpid.
* ser-pipe.c (pipe_close): Wait for the program to exit.

gdb/
* cli-logging.c: Include gdb_assert.h.
(set_logging_overwrite): New function.
(logging_redirect): New comment.
(logging_no_redirect_file, set_logging_redirect)
(pop_output_files) <logging_no_redirect_file>: New.
(handle_redirections) <!logging_redirect>: New variable
no_redirect_file.  Remove file autoclose for tee_file_new.  No longer
discard cleanup for the close of former OUTPUT.  Set
LOGGING_NO_REDIRECT_FILE.
(handle_redirections) <logging_redirect>: gdb_assert
LOGGING_NO_REDIRECT_FILE.
(show_logging_command) <logging_redirect handling>: Adjust messages
for SAVED_FILENAME not NULL.
(_initialize_cli_logging): Install set_logging_overwrite and
set_logging_redirect.

Add test for -file-list-exec-source-files

gdb/testsuite/ChangeLog:

        * gdb.dwarf/dw2-filename.S, gdb.dwarf/dw2-filename.exp: New files.

gdb/
* iq2000-tdep.c (iq2000_scan_prologue): Initialize SAL.END.

gdb/
* Makefile.in (GDB_WARN_CFLAGS_NO_FORMAT): Convert it to the no- form.
(monitor.o): Replace $(INTERNAL_WARN_CFLAGS) by $(INTERNAL_CFLAGS) and
add $(GDB_WARN_CFLAGS_NO_FORMAT).
(printcmd.o): Replace $(INTERNAL_CFLAGS_BASE) by $(INTERNAL_CFLAGS).

2010-09-02  Yao Qi  <yao@codesourcery.com>

        * linux-nat.c (status_to_str): Use WTERMSIG to extract the signal
        number from a WIFSIGNALED status.

*** empty log message ***

daily update

* symtab.h (lookup_type_symbol): Declare.
* symtab.c (lookup_symbol_in_language_full): Rename from
lookup_symbol_in_language.  Add 'for_type' argument.
(lookup_symbol_in_language): New function.
(lookup_type_symbol): Likewise.
(lookup_symbol_aux): Add 'for_type' argument.
(match_symbol_aux): New function.
(lookup_symbol_aux_symtabs): Use expand_one_symtab_matching.
(match_transparent_type): New function.
(basic_lookup_transparent_type): Use expand_one_symtab_matching.
* symfile.h (struct quick_symbol_functions)
<pre_expand_symtabs_matching>: Remove.
<expand_one_symtab_matching>: New field.
* psymtab.c (expand_one_symtab_matching_psymtabs): New function.
(pre_expand_symtabs_matching_psymtabs): Remove.
(psym_functions): Update.
* gdbtypes.c (lookup_typename): Use lookup_type_symbol.
* dwarf2read.c (dw2_lookup_symbol): Update comment.
(dw2_pre_expand_symtabs_matching): Remove.
(dw2_expand_one_symtab_matching): New function.
(dwarf2_gdb_index_functions): Update.

[NEWS] powerpc-lynxos gdbserver support

This adds an entry in the NEWS file announcing the GDBserver support
on powerpc-lynxos.

gdb/ChangeLog:

        * NEWS: Add entry announcing GDBserver support on powerpc-lynxos.

   * mi/mi-main.c (mi_cmd_list_target_features): Add `reverse'
       as a feature reported by -list-target-features.

       * gdb.texinfo (GDB/MI Miscellaneous Commands): Document new
       feature `reverse' output by -list-target-features.

gdbserver support for powerpc-lynxos (4.x)

This patch adds support for powerpc-lynxos.

gdbserver/ChangeLog:

        * gdbserver/lynx-low.c, gdbserver/lynx-low.h,
        gdbserver/lynx-ppc-low.c: New files.
        * Makefile.in (lynx_low_h): New variable.
        (lynx-low.o, lynx-ppc-low.o): New rules.
        * configure.ac: On LynxOS, link with -lnetinet.
        * configure.srv: Add handling of powerpc-*-lynxos* targets.
        * configure: regenerate.

Import vsnprintf from libiberty if not available.

vasprintf and vsnprintf are not available on LynxOS, at least not on
version 4.0.0.  This patch updates the configury to import them from
libiberty if not available out of the box.

gdbserver/
        * Makefile.in (vasprintf.o, vsnprintf.o): New rules.
        * configure.ac: Add check for vasprintf and vsnprintf.
        * configure, config.in: Regenerate.
        * server.h (vasprintf, vsnprintf): Add conditional declarations.

Generate regformats/rs6000/powerpc-32.dat

I will need this description for the ppc-lynxos debugger where, AFAICT,
we only have access to the core GP and FP registers.  So this adds
powerpc-32 to the list of targets for which a .dat file needs  to be
generated.

2010-04-30  Joel Brobecker  <brobecker@adacore.com>

        * features/Makefile (WHICH): Add rs6000/powerpc-32.
        (powerpc-32.o, powerpc-32.c): New rules.
        (clean): Also remove powerpc-32.c.
        * regformats/rs6000/powerpc-32.dat: Generate.

[gdbserver] Move malloc.h include to server.h.

This patch moves all includes of malloc.h, which were introduced
purely to get access to alloca's declaration, to server.h, next
to the include of alloca.h.

There is one exception: gdbreplay.c, which does not include server.h.
In this case, the include of alloca.h was simply moved up a bit, next
to the include of malloc.h.

gdb/gdbserver/ChangeLog:

        * gdbreplay.c: Move include of alloca.h up, next to include of
        malloc.h.
        * server.h: Add include of malloc.h.
        * mem-break.c: Remove include of malloc.h.
        * server.c, tracepoint.c, utils.c, win32-low.c: Likewise.

Put ChangeLog entries in the right ChangeLog file.

* netbsd-core.c (netbsd_core_core_file_pid): Renamed to ...
(netbsd_core_file_pid): ... this.

Fix typo

    * ld-scripts/section-match.exp: New file.  Runs ths
        section-match-1 test.
        * ld-scripts/section-match-1.d: New file.
        * ld-scripts/section-match-1.s: New file.
        * ld-scripts/section-match-1.t: New file.

2010-09-01  Tristan Gingold  <gingold@adacore.com>

* coffcode.h (coff_slurp_line_table): Add a cast.
(coff_slurp_reloc_table): Ditto.

Compile memmem.o without -Werror.

This reproduces the same approach as in GDB to allow us to build
specific files without -Werror.

gdb/gdbserver/ChangeLog:

        * Makefile.in (INTERNAL_CFLAGS_BASE): New variable. Extracted
        from INTERNAL_CFLAGS.
        (INTERNAL_WARN_CFLAGS): New variable.
        (INTERNAL_CFLAGS): Adjust, using INTERNAL_WARN_CFLAGS.

use xsnprintf instead of snprintf.

snprintf is not available on LynxOS, so I changed the calls to snprintf
to calls to xsnprintf, which should be strictly equivalent.

gdb/gdbserver/ChangeLog:

        * utils.c (xsnprintf): Make non-static.
        * server.h: Add xsnprintf declaration.
        * linux-low.c, nto-low.c, target.c, thread-db.c, tracepoint.c:
        replace calls to snprintf by calls to xsnprintf throughout.

include alloca.h if available.

On LynxOS, alloca is defined in allocal.h.  This fixes one warning that
occurs when building GDBserver for LynxOS.

gdb/gdbserver/ChangeLog:

        * configure.ac: Add configure check for alloca.
        * configure, config.in: Regenerate.
        * server.h: Include alloca.h if it exists.
        * gdbreplay.c: Include alloca.h if it exists.