In gdb/testsuite/gdb.base/charset.c, use "IBM1047" instead of "EBCDIC"
to fix the wrong comment.

Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>

In gdb/testsuite/gdb.base/charset.c, the last argument is greater than 127
when call fill_run() in EBCDIC-US and IBM1047, but the type of string[] is
char, this will change the value due to sign extension.

For example, ebcdic_us_string[7] will be -63 instead of the original 193 in
EBCDIC-US.

Make the type of string[] as unsigned char to fix the following six failed
testcases:

  $ grep FAIL gdb/testsuite/gdb.sum
  FAIL: gdb.base/charset.exp: check value of parsed character literal in EBCDIC-US
  FAIL: gdb.base/charset.exp: check value of parsed string literal in EBCDIC-US
  FAIL: gdb.base/charset.exp: check value of escape that doesn't exist in EBCDIC-US
  FAIL: gdb.base/charset.exp: check value of parsed character literal in IBM1047
  FAIL: gdb.base/charset.exp: check value of parsed string literal in IBM1047
  FAIL: gdb.base/charset.exp: check value of escape that doesn't exist in IBM1047

Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>

In many ar implementations (FreeBSD, elfutils, etc), -T has the X/Open
System Interface specified semantics. Therefore -T for thin archives is
not recommended for portability. -T is deprecated without diagnostics.

    PR binutils/28759
    * ar.c (long_options): Add --thin.
    (usage) Add --thin. Deprecate -T without diagnostics.
    * doc/binutils.texi: Add doc.
    * NEWS: Mention --thin.
    * binutils/testsuite/binutils-all/ar.exp: Add tests.

ld	* pe-dll.c (make_head): Prefix the symbol name with the dll name.
	(make_tail, make_one, make_singleton_name_thunk): Likewise.
	(make_import_fixup_entry, make_runtime_pseudo_reloc): Likewise.
	(pe_create_runtime_relocator_reference): Likewise.
	(pe_dll_generate_implib): Set dll_symname_len.
	(pe_process_import_defs): Likewise.

binutils
	* dlltool.c (main): If a prefix has not been provided, attempt to
	use a deterministic one based upon the dll name.

I had cause to regenerate gdbsupport/Makefile.in, and noticed some
unexpected changes in the copyright header dates.

I suspect that this was caused by the end of year date range update
process.

The Makefile.in contains two date ranges.  The first range appears to
be the date range for the version of automake being used, that is the
range runs up to 2017 only, when automake 1.15.1 was released.

The second date range in Makefile.in represents the date range for the
generated file, and so, now runs up to 2022.

Anyway, this is the result of running autoreconf (using automake
1.15.1) in the gdbsupport directory.

This patch adds support for TLS relocation targeting C_HIDEXT symbols.
In gas, TLS relocations, except R_TLSM and R_TLMSL, must keep the value
of their target symbol.
In ld, it simply ensures that internal TLS symbols are added to the
linker hash table for xcoff_reloc_type_tls.

It also improves the tests made by both.

bfd/ChangeLog:

	* coff-rs6000.c (xcoff_howto_table): Fix name of R_TLSML.
	(xcoff_reloc_type_tls): Replace the error when h is NULL by
	an assert.
	(xcoff_complain_overflow_unsigned_func): Adjust comments.
	* coff64-rs6000.c (xcoff64_howto_table): Fix name of R_TLSML.
	* xcofflink.c (xcoff_link_add_symbols_to_hash_table): New
	function.
	(xcoff_link_add_symbols): Add C_HIDEXT TLS symbols to the linker
	hash table.

gas/ChangeLog:

	* config/tc-ppc.c (md_apply_fix): Enable support for TLS
	relocation over internal symbols.
	* testsuite/gas/ppc/aix.exp: Replace xcoff-tlms by xcoff-tls.
	* testsuite/gas/ppc/xcoff-tlsm-32.d: Removed.
	* testsuite/gas/ppc/xcoff-tlsm-64.d: Removed.
	* testsuite/gas/ppc/xcoff-tlsm.s: Removed.
	* testsuite/gas/ppc/xcoff-tls-32.d: New test.
	* testsuite/gas/ppc/xcoff-tls-64.d: New test.
	* testsuite/gas/ppc/xcoff-tls.s: New test.

ld/ChangeLog:

	* testsuite/ld-powerpc/aix52.exp: Improve aix-tls-reloc test.
	* testsuite/ld-powerpc/aix-tls-reloc.s: Likewise.
	* testsuite/ld-powerpc/aix-tls-reloc-32.d: Removed.
	* testsuite/ld-powerpc/aix-tls-reloc-64.d: Removed.
	* testsuite/ld-powerpc/aix-tls-reloc-32.dd: New test.
	* testsuite/ld-powerpc/aix-tls-reloc-32.dt: New test.
	* testsuite/ld-powerpc/aix-tls-reloc-64.dd: New test.
	* testsuite/ld-powerpc/aix-tls-reloc-64.dt: New test.

Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>

The Darwin code uses unfiltered output liberally.  This patch changes
this code to send some output to gdb_stdlog (in some cases via the use
of debug_prefixed_printf_cond_nofunc), or to gdb_stderr, or to simply
switch to filtered output.

Note that I didn't switch inferior_debug to use
debug_prefixed_printf_cond_nofunc, because that would affect the
output by removing the information about the inferior.  I wasn't sure
if this was important or not, so I left it in.

v2 of this patch uses warning rather than prints to gdb_stderr, and
removes some trailing whitespace.

I can't compile this patch, so it's "best effort".

While testing on GNU/Hurd (i386) I noticed that GDB crashes when an
inferior exits, with this error:

  inferior.c:293: internal-error: inferior* find_inferior_pid(process_stratum_target*, int): Assertion `pid != 0' failed.

The problem appears to be in gnu_nat_target::wait.

We always set inferior_ptid to null_ptid before calling target_wait,
this has been the case since the multi-target changes were made to GDB
in commit:

  commit 5b6d1e4f
  Date:   Fri Jan 10 20:06:08 2020 +0000

      Multi-target support

With follow up changes in commit:

  commit 24ed6739
  Date:   Thu Jan 30 14:35:40 2020 +0000

      gdb/remote: Restore support for 'S' stop reply packet

Unfortunately, the GNU/Hurd target is still relying on the value of
inferior_ptid in the case where an inferior exits - we return the
value of inferior_ptid as the pid of the process that exited.  This
was fine in the single target world, where inferior_ptid identified
the one running inferior, but this is no longer good enough.

Instead, we should return a ptid containing the pid of the process
that exited, as obtained from the wait event, and this is what this
commit does.

I've not run the full testsuite on GNU/Hurd as there appear to be lots
of other issues with this target that makes running the full testsuite
very painful, but I think this looks like a small easy improvement.

Lancelot pointed out that target_announce_attach was missing an
explicit check against nullptr.  This patch adds it.

This patch adds information about _sigsys structure from newer
kernels, so that $_siginfo decoding can show information about
_sigsys, making it easier for developers to debug seccomp failures.
Requested in PR gdb/24283.

Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=24283

Add "show print array-indexes" testcases after set print array-indexes
to off or on.

Without this patch:

    PASS: gdb.base/arrayidx.exp: set print array-indexes to off
    PASS: gdb.base/arrayidx.exp: print array with array-indexes off
    PASS: gdb.base/arrayidx.exp: set print array-indexes to on
    PASS: gdb.base/arrayidx.exp: print array with array-indexes on

With this patch:

    PASS: gdb.base/arrayidx.exp: set print array-indexes to off
    PASS: gdb.base/arrayidx.exp: show print array-indexes is off
    PASS: gdb.base/arrayidx.exp: print array with array-indexes off
    PASS: gdb.base/arrayidx.exp: set print array-indexes to on
    PASS: gdb.base/arrayidx.exp: show print array-indexes is on
    PASS: gdb.base/arrayidx.exp: print array with array-indexes on

Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>

DT_RELR encodes consecutive R_*_RELATIVE relocations in GOT (the global
offset table) and data sections in a compact format:

https://groups.google.com/g/generic-abi/c/bX460iggiKg

On some targets, R_*_RELATIVE relocations are counted and the GOT offsets
are allocated when setting the dynamic section sizes after seeing all
relocations.  R_*_RELATIVE relocations are generated while relocating
sections after section layout has been finalized.

To prepare for DT_RELR implementation on these targets, extract
_bfd_elf_link_iterate_on_relocs from _bfd_elf_link_check_relocs so
that a backend can scan relocations in elf_backend_always_size_sections

For x86 targets, the old check_relocs is renamed to scan_relocs and a
new check_relocs is added to chek input sections and create dynamic
relocation sections so that they will be mapped to output sections.
scan_relocs is now called from elf_backend_always_size_sections.

Since relocations are scanned after __start, __stop, .startof. and
.sizeof. symbols have been finalized on x86, __[start|stop]_SECNAME for
--gc-sections -z start-stop-gc are now zero when all SECNAME sections
been garbage collected.  This is no need for elf_x86_start_stop_gc_p.

bfd/

	* elf-bfd.h (_bfd_elf_link_iterate_on_relocs): New.
	* elf32-i386.c (elf_i386_convert_load_reloc): Don't call
	elf_x86_start_stop_gc_p.
	(elf_i386_check_relocs): Renamed to ...
	(elf_i386_scan_relocs): This.  Don't call
	_bfd_elf_make_dynamic_reloc_section.
	(elf_i386_always_size_sections): New.
	(elf_backend_check_relocs): Removed.
	(elf_backend_always_size_sections): New.
	* elf64-x86-64.c (elf_x86_64_convert_load_reloc): Don't call
	elf_x86_start_stop_gc_p.
	(elf_x86_64_check_relocs): Renamed to ...
	(elf_x86_64_scan_relocs): This.  Don't call
	_bfd_elf_make_dynamic_reloc_section.
	(elf_x86_64_always_size_sections): New.
	(elf_backend_check_relocs): Removed.
	(elf_backend_always_size_sections): New.
	* elflink.c (elf_link_check_or_scan_relocs):
	New.  Extracted from _bfd_elf_link_check_relocs.
	(_bfd_elf_link_check_relocs): Call elf_link_check_or_scan_relocs.
	* elfxx-x86.c (_bfd_x86_elf_check_relocs): New.
	* elfxx-x86.h (X86_64_NEED_DYNAMIC_RELOC_TYPE_P): New.
	(I386_NEED_DYNAMIC_RELOC_TYPE_P): Likewise.
	(X86_NEED_DYNAMIC_RELOC_TYPE_P): Likewise.
	(_bfd_x86_elf_check_relocs): Likewise.
	(elf_backend_check_relocs): Likewise.
	(elf_backend_always_size_sections): Removed.
	(elf_x86_start_stop_gc_p): Likewise.

ld/

	* testsuite/ld-i386/pr27491-1a.d: Updated.
	* testsuite/ld-x86-64/pr27491-1a.d: Likewise.

When I run the testsuite, I have:

    Running .../gdb/testsuite/gdb.mi/mi-catch-load.exp ...
    DUPLICATE: gdb.mi/mi-catch-load.exp: breakpoint at main
    DUPLICATE: gdb.mi/mi-catch-load.exp: mi runto main

Fix by grouping the various phases in with_test_prefix blocks.  Since
the tests now have a prefix, remove the manually written prefixes in
testnames.

Also change some messages with the pattern "(timeout) $testname" into
"$estname (timeout)" since tools will handle this as $testname[1] (which
is what we want in this particular scenario).

Tested on x86_64-linux.

[1] https://sourceware.org/gdb/wiki/GDBTestcaseCookbook#Do_not_use_.22tail_parentheses.22_on_test_messages

When running the testsuite, I have:

    Running .../gdb/testsuite/gdb.threads/staticthreads.exp ...
    DUPLICATE: gdb.threads/staticthreads.exp: couldn't compile staticthreads.c: unrecognized error

Fix by using foreach_with_prefix instead of foreach when preparing the
test case.

Testeed on x86_64-linux both in a setup where the test fails to prepare
and in a setup where the test fails to setup.

When running the testsuite, I have:

    Running .../gdb/testsuite/gdb.mi/mi-language.exp ...
    DUPLICATE: gdb.mi/mi-language.exp: set lang ada

This is due to an erroneous explicit test name.  This explicit test name
also happens to be useless (at least it would have been if it was
correct) since it only repeats the command, so just remove the explicit
test name and let the command be used as default test name.  Also remove
explicit test name at another location in the file since it also just
repeat the command.

Tested on x86_64-linux.

When running the testsuite, I have:

    Running .../gdb/testsuite/gdb.mi/mi-nonstop-exit.exp ...
    DUPLICATE: gdb.mi/mi-nonstop-exit.exp: breakpoint at main
    DUPLICATE: gdb.mi/mi-nonstop-exit.exp: mi runto main

This test runs the same sequence of operations twice.  Refactor the code
by running both of those sequences within a foreach_with_prefix block to
ensure that the commands have unique test names.

Tested on x86_64-linux.

When running the testsuite, I have:

    Running .../gdb/testsuite/gdb.mi/mi-nonstop.exp ...
    DUPLICATE: gdb.mi/mi-nonstop.exp: check varobj, w1, 1
    DUPLICATE: gdb.mi/mi-nonstop.exp: stacktrace of stopped thread

Fix by adjusting the problematic test names.

Tested on x86_64-linux.

When running the testsuite, I have:

    Running .../gdb/testsuite/gdb.mi/mi-nsthrexec.exp ...
    DUPLICATE: gdb.mi/mi-nsthrexec.exp: breakpoint at main

Fix by adjusting the duplicated test name.

Tested on x86_64-linux.

When running the testsuite, I have:

    Running ../gdb/testsuite/gdb.base/watchpoints.exp ...
    DUPLICATE: gdb.base/watchpoints.exp: watchpoint hit, first time

Fix by adjusting the test names where appropriate.

Tested on x86_64-linux.

When running the testsuite, I have:

    Running .../gdb/testsuite/gdb.base/nested-subp2.exp ...
    DUPLICATE: gdb.base/nested-subp2.exp: continue to the STOP marker
    DUPLICATE: gdb.base/nested-subp2.exp: print c
    DUPLICATE: gdb.base/nested-subp2.exp: print count

Fix by using with_test_prefix to differentiate the test that are
performed at different points during the execution of the debuggee.

Tested on x86_64-linux.

When running the testsuite, I have:

    Running .../gdb/testsuite/gdb.base/call-signal-resume.exp ...
    DUPLICATE: gdb.base/call-signal-resume.exp: dummy stack frame number
    DUPLICATE: gdb.base/call-signal-resume.exp: set confirm off
    DUPLICATE: gdb.base/call-signal-resume.exp: return

This is due to the fact that a pattern was probably copy/pasted to
re-use the logic while not adjusting the test names to avoid the
duplication.

Fix by removing the redundant tests ('set confirm off' only needs to be
used once) and adjusting the test names where appropriate.

Tested on x86_64-linux.

When I run the testsuite, I have :

    Running .../gdb/testsuite/gdb.base/pointers.exp ...
    DUPLICATE: gdb.base/pointers.exp: pointer assignment

Fix by placing the sections with duplication in with_test_prefix blocks.
This removes the duplication and gives a better organization the file.

Tested on x86_64-linux.
Co-Authored-By: Pedro Alves <pedro@palves.net>

When running the testsuite, I have:

    Running .../gdb/testsuite/gdb.base/unload.exp ...
    DUPLICATE: gdb.base/unload.exp: continuing to unloaded libfile

Fix by adjusting the test name.

Tested on x86_64-linux.

When running the testsuite, I have:

    Running .../gdb/testsuite/gdb.base/define-prefix.exp ...
    DUPLICATE: gdb.base/define-prefix.exp: define user command: ghi-prefix-cmd

Fix by adjusting test names.

Tested on x86_64-linux.

When running the testsuite, I have:

    Running .../gdb/testsuite/gdb.base/funcargs.exp ...
    DUPLICATE: gdb.base/funcargs.exp: run to call2a

Fix by using proc_with_prefix instead on plain proc to create logical
function blocks.

Tested on x86_64-linux.

When I run the testsuite, I have:

    Running .../gdb/testsuite/gdb.base/shlib-call.exp ...
    DUPLICATE: gdb.base/shlib-call.exp: print g
    DUPLICATE: gdb.base/shlib-call.exp: set print sevenbit-strings
    DUPLICATE: gdb.base/shlib-call.exp: set print address off
    DUPLICATE: gdb.base/shlib-call.exp: set width 0
    DUPLICATE: gdb.base/shlib-call.exp: continue until exit

Fix by adjusting the test names when required, and by removing
un-necessary commands.

While at it, do some cleanup:
- Replace an explicit GDB restart sequence with a call to clean_restart.
- Remove trailing whitespaces.
- Use $gdb_test_name in gdb_test_multiple.

Tested on x86_64-linux.

When running the testsuite, I have:

    Running .../gdb/testsuite/gdb.base/set-cwd.exp ...
    DUPLICATE: gdb.base/set-cwd.exp: test_cwd_reset: continue to breakpoint: break-here

Fix by moving the tests after the 'runto_main' within the same
with_test_prefix scope.

While at it, I fix some indentation issues.

Tested on x86_64-linux.

When running the testsuite, I have:

    Running .../gdb/testsuite/gdb.base/exprs.exp ...
    DUPLICATE: gdb.base/exprs.exp: \$[0-9]* = red (setup)

Fix by using with_test_prefix where appropriate.

Tested on x86_64-linux.

When running the testsuite, I have:

    Running .../gdb/testsuite/gdb.base/readline.exp ...
    DUPLICATE: gdb.base/readline.exp: Simple operate-and-get-next - final prompt

Fix by adjusting the prefix given to the second 'simple' call to
operate_and_get_next.

Tested on x86_64-linux.

When I run the testsuite, I have:

    Running .../gdb/testsuite/gdb.base/pretty-array.exp ...
    DUPLICATE: gdb.base/pretty-array.exp: print nums
    DUPLICATE: gdb.base/pretty-array.exp: print nums

Fix by giving a name to the test cases.

Tested on x86_64-linux.

When running the testsuite, I have:

    Running .../gdb/testsuite/gdb.base/ui-redirect.exp ...
    DUPLICATE: gdb.base/ui-redirect.exp: redirect while already logging: set logging redirect off

Fix by moving the first 'set logging redirect off' to the end of the
previous [with_test_prefix] test block. The statement's purpose is to
clean the on flag set in this previous block, so moving it there makes
sense and does not change the sequence of commands in the test file.

Tested on x86_64-linux.

There is a expect support library in the source tree designed to help
developers test the auto-completion capabilities of GDB.

One of the functions is test_gdb_complete_unique_re.  It is used
(usually indirectly via test_gdb_complete_unique) to test that a given
input line is completed as a given output line.  The test checks for two
ways to do the completion: using tab-completion, or using the
'complete' command.  To do this, calls to two dedicated functions are
performed.  If we omit few details, we can consider that a call to

    test_gdb_complete_unique $input $expected

is equivalent to the two following calls:

    test_gdb_complete_tab_unique $input $expected
    test_gdb_complete_cmd_unique $input $expected

When using the tab-completion, everything works as expected, but some
care must be taken when using the 'complete' command if the given input
has leading whitespaces.  In such situation, the output of the
'complete' command will drop the leading whitespaces.

The current approach is that in such situation, the input and expected
outputs are right trimmed (i.e. all leading whitespaces are removed)
when performing the command completion check.

This means that the following call:

    test_gdb_complete_unique "   $input" "   $expected"

is almost equivalent to (again, omitting few details and arguments):

    test_gdb_complete_tab_unique "   $input" "   $expected"
    test_gdb_complete_cmd_unique "$input" "$expected"

This approach comes with a problem that we encounter when running the
tests in complete-empty.exp.  When doing so, we have:

    Running .../gdb/testsuite/gdb.base/complete-empty.exp ...
    DUPLICATE: gdb.base/complete-empty.exp: empty-input-line: cmd complete ""

This is because the test file does something like:

    test_gdb_complete_unique "" "!" " " 1
    test_gdb_complete_unique "   " "   !" " " 1¬

which, if we do the substitution introduced above is equivalent to:

    test_gdb_complete_tab_unique "" "!"
    test_gdb_complete_cmd_unique "" "!"
    test_gdb_complete_tab_unique "   " "   !"
    test_gdb_complete_cmd_unique "" "!"

We see that the lines 2 and 4 are now the same, and for this reason the
testing framework complains about DUPLICATE test names.

To fix that, this commit proposes that instead of left trimming both
input and expected outputs, only the expected output is trimmed.

Care must be taken in the case the completion gives more possibilities
than allowed by the max-completions setting.  In this case, the input
will be repeated in the output in its left trimmed version.  This commit
also ensures that this is taken care of.

With this commit, the gdb.base/complete-empty.exp still passes all its
tests but does not report the DUPLICATE anymore.

Tested on x86_64-linux.

When I run the testsuite, I have:

    Running .../gdb/testsuite/gdb.base/subst.ex ...
    DUPLICATE: gdb.base/subst.exp: unset substitute-path from, no rule entered yet

Fix by adjusting the problematic test name.

Tested on x86_64-linux.