Commit Graph

100791 Commits

Author SHA1 Message Date
Alan Modra
190e5fc8b3 Re: Add support for a ".file 0" directive if supporting DWARF 5 or higher.
Fixes a fail on hppa64-hp-hpux, where anything in the first column is
a label.

	* testsuite/gas/elf/dwarf-5-file0.s: Don't start directives in
	first column.
2020-03-07 20:12:20 +10:30
Simon Marchi
9979ab6663 binutils: doc: move artifacts back to MAINTAINERCLEANFILES
In commit 2b44a6a237 (" binutils: doc: make `make clean` clean more
things"), I moved the doc build artifacts to MOSTLYCLEANFILES, which
made them get removed by "make clean".

Because generating binutils.info requires makeinfo, and we do not want
to require makeinfo when building from the tarball, binutils.info should
not get removed by "make clean" (otherwise, it won't be included in the
tarball).

And to be consistent with other projects (e.g. ld and gas), we also want
to ship the built man pages in the tarball.

This patch puts back all these in MAINTAINERCLEANFILES, so that they are
bundled in the tarball, and only cleaned if you use "make
maintainer-clean".

Tested by building a source release and confirming they are present.

binutils/ChangeLog:

	PR 25491
	* doc/Makefile.am: Rename MOSTLYCLEANFILES to MAINTAINERCLEANFILES.
	* doc/Makefile.in: Re-generate.
2020-03-06 22:06:34 -05:00
GDB Administrator
12e4371ae4 Automatic date update in version.in 2020-03-07 00:00:44 +00:00
Simon Marchi
29734269a7 Pass thread_info pointer to various inferior control functions
[ Migrating this from Gerrit: https://gnutoolchain-gerrit.osci.io/r/c/binutils-gdb/+/321 ]

I noticed that some functions in infcmd and infrun call each other and
all call inferior_thread, while they could just get the thread_info
pointer from their caller.  That means less calls to inferior_thread, so
less reliance on global state, since inferior_thread reads
inferior_ptid.

The paths I am unsure about are:

  - fetch_inferior_event calls...
  - step_command_fsm::should_stop calls...
  - prepare_one_step

and

 - process_event_stop_test calls...
 - set_step_info

Before this patch, prepare_one_step gets the thread pointer using
inferior_thread.  After this patch, it gets it from the
execution_control_state structure in fetch_inferior_event.  Are we sure
that the thread from the execution_control_state structure is the same
as the one inferior_thread would return?  This code path is used when a
thread completes a step, but the user had specified a step count (e.g.
"step 5") so we decide to do one more step.  It would be strange (and
even a bug I suppose) if the thread in the ecs structure in
fetch_inferior_event was not the same thread that is prepared to stepped
by prepare_one_step.  So I believe passing the ecs thread is fine.

The same logic applies to process_event_stop_test calling
set_step_info.

gdb/ChangeLog:

	* infrun.h: Forward-declare thread_info.
	(set_step_info): Add thread_info parameter, add doc.
	* infrun.c (set_step_info): Add thread_info parameter, move doc
	to header.
	* infrun.c (process_event_stop_test): Pass thread to
	set_step_info call.
	* infcmd.c (set_step_frame): Add thread_info pointer, pass it to
	set_step_info.
	(prepare_one_step): Add thread_info parameter, pass it to
	set_step_frame and prepare_one_step (recursive) call.
	(step_1): Pass thread to prepare_one_step call.
	(step_command_fsm::should_stop): Pass thread to
	prepare_one_step.
	(until_next_fsm): Pass thread to set_step_frame call.
	(finish_command): Pass thread to set_step_info call.
2020-03-06 18:30:37 -05:00
Hannes Domani
b7d64b2909 Don't try to get the TIB address without an inferior
The target_get_tib_address call always fails in this case, and there is an
error when changing the program with the file command:

(gdb) file allocer64.exe
Reading symbols from allocer64.exe...
You can't do that when your target is `exec'

Now it will skip this part, there is no need to rebase the executable without
an inferior anyways.

gdb/ChangeLog:

2020-03-06  Hannes Domani  <ssbssa@yahoo.de>

	* windows-tdep.c (windows_solib_create_inferior_hook):
	Check if inferior is running.
2020-03-06 18:38:47 +01:00
Nick Clifton
84d9ab33f3 Add support for a ".file 0" directive if supporting DWARF 5 or higher.
PR 25614
	* dwarf2dbg.c (dwarf2_directive_filename): Allow a file number of
	0 if the dwarf_level is 5 or more.  Complain if a filename follows
	a file 0.
	* testsuite/gas/elf/dwarf-5-file0.s: New test.
	* testsuite/gas/elf/dwarf-5-file0.d: New test driver.
	* testsuite/gas/elf/elf.exp: Run the new test.

	PR 25612
	* config/tc-ia64.h (DWARF2_VERISION): Fix typo.
	* doc/as.texi: Fix another typo.
2020-03-06 17:13:22 +00:00
Tom de Vries
436b5e99c8 [gdb/testsuite] Fix "text file busy" errors with cc-with-tweaks.exp
When using target board cc-with-gdb-index.exp and running tests in parallel,
we run into:
...
gdb compile failed, gdb/contrib/gdb-add-index.sh: line 86: \
  build/gdb/testsuite/gdb.sh: Text file busy
...

The problem is that because of the parallel test run, gdb.sh is created for
every single test-case, and eventually gdb.sh is overwritten while being
executed.

Fix this by creating gdb.sh only once.

Tested on x86_64-linux with target board cc-with-gdb-index.exp, using both a
serial and parallel -j 5 test run.

gdb/testsuite/ChangeLog:

2020-03-06  Tom de Vries  <tdevries@suse.de>

	* lib/gdb.exp (tentative_rename, cached_file): New proc.
	* boards/cc-with-tweaks.exp: Use cached_file to create gdb.sh.
2020-03-06 18:03:01 +01:00
Nick Clifton
31bf18645d Add support for --dwarf-[3|4|5] to assembler command line.
PR 25612
	* as.c (dwarf_level): Define.
	(show_usage): Add --gdwarf-3, --gdwarf-4 and --gdwarf-5.
	(parse_args): Add support for the new options.
	as.h (dwarf_level): Prototype.
	* dwarf2dbg.c (DWARF2_VERSION): Use dwarf_level as default version
	value.
	* config/tc-ia64.h (DWARF2_VERISION): Update definition.
	(DWARF2_LINE_VERSION): Remove definition.
	* doc/as.texi: Document the new options.
2020-03-06 14:52:14 +00:00
Tom de Vries
09f2921cc9 [gdb,testsuite,doc,NEWS] Fix "the the".
Replace "the the" by "the".

gdb/ChangeLog:

2020-03-06  Tom de Vries  <tdevries@suse.de>

	* NEWS: Fix "the the".
	* ctfread.c: Same.

gdb/doc/ChangeLog:

2020-03-06  Tom de Vries  <tdevries@suse.de>

	* gdb.texinfo: Fix "the the".

gdb/testsuite/ChangeLog:

2020-03-06  Tom de Vries  <tdevries@suse.de>

	* README: Fix "the the".
	* gdb.base/dprintf.exp: Same.
2020-03-06 15:22:23 +01:00
Tom de Vries
fd760e798e [gdb] Remove trailing "done" after "Reading symbols from" message
Using verbose, we get some detail on symbol loading:
...
$ gdb a.out -iex "set verbose on"
Reading symbols from a.out...
Reading in symbols for /home/vries/hello.c...done.
(gdb)
...

And using debug symtab-create, much more detail:
...
$ gdb a.out -iex "set verbose on" -iex "set debug symtab-create 1"
Reading symbols from a.out...
Reading minimal symbols of objfile /data/gdb_versions/devel/lto/a.out ...
Installing 30 minimal symbols of objfile /data/gdb_versions/devel/lto/a.out.
Done reading minimal symbols.
Creating one or more psymtabs for objfile /data/gdb_versions/devel/lto/a.out ...
Created psymtab 0x35a3de0 for module ../sysdeps/x86_64/start.S.
Created psymtab 0x353e4e0 for module init.c.
Created psymtab 0x353e560 for module ../sysdeps/x86_64/crti.S.
Created psymtab 0x353e5e0 for module /home/vries/hello.c.
Created psymtab 0x35bd530 for module elf-init.c.
Created psymtab 0x35bd5b0 for module ../sysdeps/x86_64/crtn.S.
Reading in symbols for /home/vries/hello.c...Created compunit symtab 0x354bd20 for hello.c.
done.
(gdb)
...

The "Created compunit symtab" message gets inbetween the "Reading in symbols"
and the trailing "done.". [ Strictly speaking this is a regression since
commit faa17681cc "Make gdb_flush also flush the wrap buffer", but the
same problem happens when using -batch before this commit. ]

Fix this by removing the trailing "done." altogether, such that we get:
...
Created psymtab 0x3590520 for module ../sysdeps/x86_64/crtn.S.
Reading in symbols for /home/vries/hello.c...
Created compunit symtab 0x359dd20 for hello.c.
(gdb)
...

[ Alternatively, we could fix this emitting a "Done reading in symbols" line
or some such, like is done for minimal symbols.  See above. ]

[ Note: Removing the trailing "done." for the "Reading symbols from" message
was done in commit 3453e7e409 'Clean up "Reading symbols" output'. ]

Build and reg-tested on x86_64-linux.

gdb/ChangeLog:

2020-03-06  Tom de Vries  <tdevries@suse.de>

	* psymtab.c (psymtab_to_symtab): Don't print "done.".
2020-03-06 12:51:59 +01:00
Andrew Burgess
20ea4a609c gdbserver/gdbsupport: Add .dir-locals.el file
Copy the .dir-locls.el file from gdb/ to gdbserver/ and gdbsupport/ so
that we get the GNU/GDB style when editing these files in Emacs.

I initially wanted to remove the (c-mode . ((mode . c++))) that
switches c-mode files into c++-mode as we store C++ code in *.cc files
in the gdbserver/ directory, unlike gdb/ where we use *.c, however, I
was forgetting about the header files - we still use *.h for our C++
header files, so for now I left the settings in place to open all C
files in c++-mode.

We now have three copies of this file, which are all identical.  It
would be nice if we could remove this duplication, however, for now we
haven't found a good way to do this.

Some options considered were:

  1. Use symlinks to only have one copy of the file.  This was
  rejected as not all targets support symlinks in the way.

  2. Have two of the .dir-locals.el files contain some mechanism by
  which the third copy of the file is sourced.  Though this would, in
  theory, be possible, it would involve some advanced Emacs scripting,
  would be fragile, and a maintenance burdon.

  3. Move the .dir-locals up into top level src/ directory, then use
  Emacs dir-locals directory pattern matching to only apply the rules
  for the three directories we care about.  The problem is that each
  directory has to be listed separately, so we still end up having to
  duplicate all the rules.

In the end, it was decided that having three copies of the file,
though not ideal, is probably easiest for now.  This was all discussed
in this mailing list thread:

  https://sourceware.org/ml/gdb-patches/2020-03/msg00024.html

The copyright date in the new files is left as for gdb/.dir-locals.el,
as the new files are a copy of the old, this is inline with this rule:

  https://sourceware.org/gdb/wiki/ContributionChecklist#Copyright_Header

gdb/ChangeLog:

	* .dir-locals.el: Add a comment referencing the other copies of
	this file.

gdbserver/ChangeLog:

	* .dir-locals.el: New file.

gdbsupport/ChangeLog:

	* .dir-locals.el: New file.
2020-03-06 11:29:46 +00:00
Nick Clifton
3c968de5c7 Stop the assembler from complaining that the input and output files are the same, if neither of them are regular files.
PR 25572
	* as.c (main): Allow matching input and outputs when they are
	not regular files.
2020-03-06 10:44:12 +00:00
Nick Clifton
a0dcf29705 Fix an abort triggered when objcopy is used to set the "share" section flag on an ELF section.
binutils* objcopy.c (check_new_section_flags): New function.  Reject the
	SEC_COFF_SHARED flag if the target is not a COFF binary.
	(copy_object): Call check_new_section_flags.
	(setup_section): Likewise.
	* doc/binutils.texi (objcopy): Add a note that the 'share' section
	flag cannot be applied to ELF binaries.

bfd	* elf.c (_bfd_elf_set_section_contents): Replace call to abort
	with error messages and failure return values.
2020-03-06 10:09:22 +00:00
Jan Beulich
bc49bfd849 x86: reduce amount of various VCVT* templates
Presumably as a result of various changes over the last several months,
and - for some of them - with a generalization of logic in
match_mem_size() plus mirroring of this generalization into the
broadcast handling logic of check_VecOperands(), various register-only
templates can be foled into their respective memory forms. This in
particular then also allows dropping a few more instances of IgnoreSize.
2020-03-06 08:56:47 +01:00
Jan Beulich
4873e2438c x86: drop/replace IgnoreSize
Even after commit dc2be329b9 ("i386: Only check suffix in instruction
mnemonic"), by which many of its uses have become unnecessary (some were
unnecessary even before), IgnoreSize is still used for various slightly
different purposes:
- to suppress emission of an operand size prefix,
- in Intel syntax mode to zap "derived" suffixes in certain cases and to
  skip certain checks of remaining "derived" suffixes,
- to suppress ambiguous operand size / missing suffix diagnostics,
- for prefixes to suppress the "stand-alone ... prefix" warning.
Drop entirely unnecessary ones and where possible also replace instances
by the more focused (because of having just a single purpose) NoRex64.

To further restrict when IgnoreSize is needed, also generalize the logic
when to skip a template because of a present or derived L or Q suffix,
by skipping immediate operands. Additionally consider mask registers and
VecSIB there.

Note that for the time being the attribute needs to be kept in place on
MMX/SSE/etc insns (but not on VEX/EVEX encoded ones unless an operand
template of them allows for only non-SIMD-register actuals) allowing for
Dword operands - the logic when to emit a data size prefix would need
further adjustment first.

Note also that the memory forms of {,v}pinsrw get their permission for
an L or Q suffix dropped. I can only assume that it being this way was a
cut-and-paste mistake from the register forms, as the latter
specifically have NoRex64 set, and the {,v}pextrw counterparts don't
allow these suffixes either.

Convert VexW= again to their respective VexW* on lines touched anyway.
2020-03-06 08:55:52 +01:00
Jan Beulich
e365e234ab x86: fold (supposed to be) identical code
The Q and L suffix exclusion checks in match_template() ought to be
(kept) in sync as far as their FPU and SIMD aspects go. This was
already violated by only the Q one checking for active broadcast.
Convert the code such that there'll be only one instance of the logic,
the more that subsequently the logic is liable to need further
refinement / extension. (The alternative would be to drop all SIMD-ness
from the L part, but it is in principle possible to enable all sorts of
SIMD support with just a pre-386 CPU, via suitable .arch directives.)
2020-03-06 08:55:03 +01:00
Jan Beulich
672a349b01 x86: don't accept FI{LD,STP,STTP}LL in Intel syntax mode
As of commit dc2be329b9 ("i386: Only check suffix in instruction
mnemonic") these have been accepted even with "qword ptr" operand size
specifier, but in 64-bit mode they're now wrongly having a REX prefix
(with REX.W set) emitted in this case. These aren't Intel syntax
mnemonics, so rather than fixing code generation, let's simply reject
them. As a result, the Qword attribute can then be dropped, too.
2020-03-06 08:53:56 +01:00
Jan Beulich
4ed21b58d4 x86: replace NoRex64 on VEX-encoded insns
When the template specifies any of the possible VexW settings, we can
use this instead of a separate NoRex64 to suppress the setting of REX_W.
Note that this ends up addressing an inconsistency between VEX- and
EVEX-encoded VEXTRACTPS, VPEXTR{B,W}, and VPINSR{B,W} - while the former
avoided setting VEX.W, the latter pointlessly set EVEX.W when there is a
64-bit GPR operand. Adjust the testcase to cover both cases.

Convert VexW= to their respective VexW* on lines touched anyway.
2020-03-06 08:53:18 +01:00
Jan Beulich
643bb87079 x86: drop Rex64 attribute
It is almost entirely redundant with Size64, and the sole case (CRC32)
where direct replacement isn't possible can easily be taken care of in
another way.
2020-03-06 08:52:12 +01:00
Jan Beulich
a23b33b3d1 x86: correct MPX insn w/o base or index encoding in 16-bit mode
Since 16-bit addressing isn't allowed, Disp32 needs to be forced; Disp16
fails to match the templates.

The SDM leaves open whether BNDC[LNU] with a GPR operand require an
operand size override; this aspect is therefore left untouched here.
2020-03-06 08:50:56 +01:00
Jan Beulich
a04973848d x86: add missing IgnoreSize
For proper code generation in 16-bit mode (or to avoid the "same type of
prefix used twice" diagnostic there), IgnoreSize is needed on certain
templates allowing for just 32-(and maybe 64-)bit operands.

Beyond adding tests for the previously broken cases, also add ones for
the previously working cases where IgnoreSize is needed for the same
reason (leaving out MPX for now, as that'll require an assembler change
first). Some minor adjustments to tests get done such that re-use of the
same code for 16-bit code generation testing becomes easier.
2020-03-06 08:49:45 +01:00
Jan Beulich
b630c145c0 x86: refine TPAUSE and UMWAIT
Allowing 64-bit registers is misleading here: Elsewhere these get allowed
when there's no difference between either variant, because of 32-bit
destination registers having their upper halves zeroed in 64-bit mode.
Here, however, they're source registers, and hence specifying 64-bit
registers would lead to the ambiguity of whether the upper 32 bits
actually matter.

Additionally, for proper code generation in 16-bit mode, IgnoreSize is
needed on both.

And finally, just like for e.g. MONITOR/MWAIT, add variants with all
input registers explicitly specified.
2020-03-06 08:48:48 +01:00
Max Filippov
e15a8da9c7 bfd: xtensa: fix PR ld/25630
bfd/
2020-03-05  Max Filippov  <jcmvbkbc@gmail.com>

	* elf32-xtensa.c (shrink_dynamic_reloc_sections): Shrink dynamic
	relocation sections for any removed reference to a dynamic symbol.
2020-03-05 19:48:08 -08:00
Alan Modra
a9b90127e8 PR25637, objcopy : SIGSEGV in copy_object
PR 25637
	* objcopy.c (filter_symbols): Correct rem_leading_char logic.
2020-03-06 10:34:19 +10:30
GDB Administrator
97669d59c8 Automatic date update in version.in 2020-03-06 00:00:49 +00:00
John Baldwin
0afbabf05a Use std::string for 'psargs'.
fbsd_make_corefile_notes leaked the memory for psargs previously.

gdb/ChangeLog:

	* fbsd-tdep.c (fbsd_make_corefile_notes): Use std::string for
	psargs.
2020-03-05 15:02:45 -08:00
Vyacheslav Petrishchev
3d1e5a43cb gdbsupport/configure.ac: source development.sh
[Commit message by Simon Marchi]

The GDB build in non-development mode (turn development to false in
bfd/development.sh if you want to try) is currently broken:

      CXXLD  gdb
    /home/smarchi/src/binutils-gdb/gdb/disasm-selftests.c:218: error: undefined reference to 'selftests::register_test_foreach_arch(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, void (*)(gdbarch*))'
    /home/smarchi/src/binutils-gdb/gdb/disasm-selftests.c:220: error: undefined reference to 'selftests::register_test_foreach_arch(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, void (*)(gdbarch*))'
    /home/smarchi/src/binutils-gdb/gdb/dwarf2/frame.c:2310: error: undefined reference to 'selftests::register_test_foreach_arch(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, void (*)(gdbarch*))'
    /home/smarchi/src/binutils-gdb/gdb/gdbarch-selftests.c:168: error: undefined reference to 'selftests::register_test_foreach_arch(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, void (*)(gdbarch*))'
    /home/smarchi/src/binutils-gdb/gdbsupport/selftest.cc:96: error: undefined reference to 'selftests::reset()'

This is because the gdbsupport configure script doesn't source
bfd/development.sh to set the development variable.  When $development
is unset, GDB_AC_SELFTEST defaults to enabling selftests.  I don't think
the macro was written with this intention in mind, it just happens to be
that way.

So gdbsupport thinks selftests are enabled, while gdb thinks they are
disabled.  gdbsupport compiles in code that calls selftests:: functions,
which are normally provided by gdb, but gdb doesn't provide them, hence
the undefined references.

Fix this by sourcing bfd/development.sh in gdbsupport/configure.ac, so
that the development variable is set.

gdbsupport/ChangeLog:

        * configure.ac: Added call development.sh.
        * configure: Regenerate.
2020-03-05 14:33:17 -05:00
Nick Clifton
a8e14f4cc2 Add support for ELF files which contain multiple reloc sections which all target the same section.
* elf-bfd.h (struct elf_backend_data): Add new fields:
	init_secondary_reloc_section, slurp_secondary_reloc_section,
	write_secondary_reloc_section.
	(_bfd_elf_init_secondary_reloc_section): Prototype.
	(_bfd_elf_slurp_secondary_reloc_section): Prototype.
	(_bfd_elf_write_secondary_reloc_section): Prototype.
	* elf.c ( bfd_section_from_shdr): Invoke the new
	init_secondary_reloc_section backend function, if defined, when a
	second reloc section is encountered.
	(swap_out_syms): Invoke the new symbol_section_index function, if
	defined, when computing the section index of an OS/PROC specific
	symbol.
	(_bfd_elf_init_secondary_reloc_section): New function.
	(_bfd_elf_slurp_secondary_reloc_section): New function.
	(_bfd_elf_write_secondary_reloc_section): New function.
	(_bfd_elf_copy_special_section_fields): New function.
	* elfcode.h (elf_write_relocs): Invoke the new
	write_secondary_relocs function, if defined, in order to emit
	secondary relocs.
	(elf_slurp_reloc_table): Invoke the new slurp_secondary_relocs
	function, if defined, in order to read in secondary relocs.
	* elfxx-target.h (elf_backend_copy_special_section_fields):
	Provide a non-NULL default definition.
	(elf_backend_init_secondary_reloc_section): Likewise.
	(elf_backend_slurp_secondary_reloc_section): Likewise.
	(elf_backend_write_secondary_reloc_section): Likewise.
	(struct elf_backend_data elfNN_bed): Add initialisers for the new
	fields.
        * configure.ac (score_elf32_[bl]e_vec): Add elf64.lo
        * configure: Regenerate.
2020-03-05 15:47:15 +00:00
Tankut Baris Aktemur
842806cb6f gdb, gdbserver, gdbsupport: add .gitattributes files
Create .gitattributes files in gdb/, gdbserver/, and gdbsupport/.

The files specify cpp-style diffs for .h and .c files.  This is
particularly helpful if a class in a header file is modified.
For instance, if the `stop_requested` field of `thread_info` in
gdb/gdbthread.h is modified, we get the following diff with
'git diff' (using git version 2.17.1):

   @@ -379,7 +379,7 @@ public:
      struct target_waitstatus pending_follow;

      /* True if this thread has been explicitly requested to stop.  */
   -  int stop_requested = 0;
   +  bool stop_requested = 0;

      /* The initiating frame of a nexting operation, used for deciding
         which exceptions to intercept.  If it is null_frame_id no

Note that the context of the change shows up as 'public:'; not so
useful.  With the .gitattributes file, we get:

   @@ -379,7 +379,7 @@ class thread_info : public refcounted_object
      struct target_waitstatus pending_follow;

      /* True if this thread has been explicitly requested to stop.  */
   -  int stop_requested = 0;
   +  bool stop_requested = 0;

      /* The initiating frame of a nexting operation, used for deciding
         which exceptions to intercept.  If it is null_frame_id no

The context is successfully shown as 'class thread_info'.

This patch creates a .gitattributes file per each of gdb, gdbserver,
and gdbsupport folders.  An alternative would be to define the
attributes in the root folder -- this would impact all the top-level
folders, though.  I opted for the more conservative approach.

gdb/ChangeLog:
2020-03-05  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	* .gitattributes: New file.

gdbserver/ChangeLog:
2020-03-05  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	* .gitattributes: New file.

gdbsupport/ChangeLog:
2020-03-05  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	* .gitattributes: New file.
2020-03-05 15:59:22 +01:00
Alan Modra
92d4b13bf3 Reduce --warn-section-align output
PR 25570
	* ldlang.c (lang_size_sections_1): Don't report changes on
	second and subsequent iterations that make no change in
	alignment from that already reported.
2020-03-05 21:52:04 +10:30
Tom de Vries
50a3cc5d71 [gdb/testsuite] Update maint.exp for string cache
When running gdb.base/maint.exp, I see:
...
FAIL: gdb.base/maint.exp: maint print statistics
...

This is due to commit be1e3d3eab "Introduce objfile::intern", which replaces
the macro and filename caches with a string cache.

Update maint.exp accordingly.

Tested on x86_64-linux.

gdb/testsuite/ChangeLog:

2020-03-05  Tom de Vries  <tdevries@suse.de>

	* gdb.base/maint.exp: Update "main print statistics" expected output.
2020-03-05 10:08:31 +01:00
Alan Modra
d1faf7ca0a PR25629, objcopy : SIGSEGV in filter_symbols
PR 25629
	* objcopy.c (filter_symbols): Don't segfault on NULL
	prefix_symbols_string.
2020-03-05 15:23:22 +10:30
Nelson Chu
dee35d026c RISC-V: Support assembler modifier %got_pcrel_hi.
gas/
	* config/tc-riscv.c: Support the modifier %got_pcrel_hi.
	* doc/c-riscv.texi: Add documentation.
	* testsuite/gas/riscv/no-relax-reloc.d: Add test case for the new
	modifier %got_pcrel_hi.
	* testsuite/gas/riscv/no-relax-reloc.s: Likewise.
	* testsuite/gas/riscv/relax-reloc.d: Likewise.
	* testsuite/gas/riscv/relax-reloc.s: Likewise.
2020-03-04 17:11:37 -08:00
Nelson Chu
de48783e2f RISC-V: Add description for RISC-V Modifiers to as doc.
gas/
	* doc/c-riscv.texi (relocation modifiers): Add documentation.
	(RISC-V-Formats): Update the section name from "Instruction Formats"
	to "RISC-V Instruction Formats".
2020-03-04 17:11:37 -08:00
Alan Modra
6f8f95b4c4 Large memory allocation reading fuzzed 64-bit archive
This patch adds a sanity check for the size of an armap.

	* archive64.c (_bfd_archive_64_bit_slurp_armap): Check parsed_size
	against file size before allocating memory.  Use bfd_alloc rather
	than bfd_zalloc for carsym/strings memory.
2020-03-05 11:15:55 +10:30
GDB Administrator
8a7adb414e Automatic date update in version.in 2020-03-05 00:00:26 +00:00
Tom Tromey
be1e3d3eab Introduce objfile::intern
This introduces a string cache on the per-BFD object, replacing the
macro and filename caches.  Both of these caches just store strings,
so this consolidation by itself saves a little memory (about the size
of a bcache per objfile).

Then this patch switches some allocations on the objfile obstack to
use this bcache instead.  This saves more space; and turns out to be a
bit faster as well.

Here are the before and after "maint time" + "maint space" results of
"file ./gdb":

    Command execution time: 4.664021 (cpu), 4.728518 (wall)
    Space used: 39190528 (+29212672 for this command)

    Command execution time: 4.216209 (cpu), 4.107023 (wall)
    Space used: 36667392 (+26689536 for this command)

The main interface to the string cache is a new pair of overloaded
methods, objfile::intern.

gdb/ChangeLog
2020-03-04  Tom Tromey  <tom@tromey.com>

	* symmisc.c (print_symbol_bcache_statistics)
	(print_objfile_statistics): Update.
	* symfile.c (allocate_symtab): Use intern.
	* psymtab.c (partial_symtab::partial_symtab): Use intern.
	* objfiles.h (struct objfile_per_bfd_storage) <filename_cache,
	macro_cache>: Remove.
	<string_cache>: New member.
	(struct objfile) <intern>: New methods.
	* elfread.c (elf_symtab_read): Use intern.
	* dwarf2/read.c (fixup_go_packaging): Intern package name.
	(dwarf2_compute_name, dwarf2_physname)
	(create_dwo_unit_in_dwp_v1, create_dwo_unit_in_dwp_v2): Intern
	names.
	(guess_partial_die_structure_name): Update.
	(partial_die_info::fixup): Intern name.
	(dwarf2_canonicalize_name): Change parameter to objfile.  Intern
	name.
	(dwarf2_name): Intern name.  Update.
	* buildsym.c (buildsym_compunit::get_macro_table): Use
	string_cache.
2020-03-04 16:34:49 -07:00
Tom Tromey
4e7625fde2 Make "gnutarget" const
I noticed that gnutarget was not "const".  Since writing through this
pointer would probably be a bug, I think it ought to be.  This patch
makes the change.

gdb/ChangeLog
2020-03-04  Tom Tromey  <tom@tromey.com>

	* jit.c (bfd_open_from_target_memory): Make "target" const.
	* corefile.c (gnutarget): Now const.
	* gdbcore.h (gnutarget): Now const.
2020-03-04 16:30:29 -07:00
Alan Modra
baf09cba8f PR25570, ld duplicate "warning: changing start of section"
Note that because we should report a signed delta from the previous
VMA it isn't possible to use ngettext.  ngettext only supports
unsigned long values.  So byte/bytes goes from the message.

	PR 25570
	* ldlang.c (lang_sizing_iteration): New static var.
	(lang_size_sections_1): Warn about no memory region only on first
	iteration.  Warn about changing start address on first iteration
	then any delta from that on subsequent iterations.  Report a signed
	delta.
	(one_lang_size_sections_pass): Increment lang_sizing_iteration.
2020-03-05 09:48:04 +10:30
Hannes Domani
46f9f93119 Implement debugging of WOW64 processes
For WOW64 processes, the Wow64* variants of SuspendThread,
GetThreadContext, SetThreadContext, and GetThreadSelectorEntry have to
be used instead.
And instead of EnumProcessModules, EnumProcessModulesEx with
LIST_MODULES_32BIT is necessary.

gdb/ChangeLog:

2020-03-04  Hannes Domani  <ssbssa@yahoo.de>

	* NEWS: Mention support for WOW64 processes.
	* amd64-windows-nat.c (amd64_mappings): Rename and remove static.
	(amd64_windows_segment_register_p): Remove static.
	(_initialize_amd64_windows_nat): Update.
	* configure.nat <windows> (NATDEPFILES): Add i386-windows-nat.o.
	* i386-windows-nat.c (context_offset): Update.
	(i386_mappings): Rename and remove static.
	(i386_windows_segment_register_p): Remove static.
	(_initialize_i386_windows_nat): Update.
	* windows-nat.c (STATUS_WX86_BREAKPOINT): New macro.
	(STATUS_WX86_SINGLE_STEP): New macro.
	(EnumProcessModulesEx): New macro.
	(Wow64SuspendThread): New macro.
	(Wow64GetThreadContext): New macro.
	(Wow64SetThreadContext): New macro.
	(Wow64GetThreadSelectorEntry): New macro.
	(windows_set_context_register_offsets): Add static.
	(windows_set_segment_register_p): Likewise.
	(windows_add_thread): Adapt for WOW64 processes.
	(windows_fetch_one_register): Likewise.
	(windows_nat_target::fetch_registers): Likewise.
	(windows_store_one_register): Likewise.
	(display_selector): Likewise.
	(display_selectors): Likewise.
	(handle_exception): Likewise.
	(windows_continue): Likewise.
	(windows_nat_target::resume): Likewise.
	(windows_add_all_dlls): Likewise.
	(do_initial_windows_stuff): Likewise.
	(windows_nat_target::attach): Likewise.
	(windows_get_exec_module_filename): Likewise.
	(windows_nat_target::create_inferior): Likewise.
	(windows_xfer_siginfo): Likewise.
	(_initialize_loadable): Initialize Wow64SuspendThread,
	Wow64GetThreadContext, Wow64SetThreadContext,
	Wow64GetThreadSelectorEntry and EnumProcessModulesEx.
	* windows-nat.h (windows_set_context_register_offsets):
	Remove declaration.
	(windows_set_segment_register_p): Likewise.
	(i386_windows_segment_register_p): Add declaration.
	(amd64_windows_segment_register_p): Likewise.
2020-03-04 21:15:20 +01:00
Alexandre Oliva
749479c8d3 Generate a warning in the ARM assembler if a PC-relative thumb load instruction is detected in a section with insufficient alignment.
* config/tc-arm.c (md_apply_fix): Warn if a PC-relative load is
	detected in a section which does not have at least 4 byte
	alignment.
	* testsuite/gas/arm/armv8-ar-it-bad.s: Add alignment directive.
	* testsuite/gas/arm/ldr-t.s: Likewise.
	* testsuite/gas/arm/sp-pc-usage-t.s: Likewise.
	* testsuite/gas/arm/sp-pc-usage-t.d: Finish test at end of
	disassembly, ignoring any NOPs that may have been inserted because
	of section alignment.
	* testsuite/gas/arm/ldr-t.d: Likewise.
2020-03-04 17:28:46 +00:00
Luis Machado
440cf44eb0 Revert "gdb: Do not print empty-group regs when printing general ones"
Revert the change since it breaks existing behavior of "info registers"
for some architectures. At least AArch64 and ARM are impacted by this change.

gdb/ChangeLog:

2020-03-04  Luis Machado  <luis.machado@linaro.org>

	Revert aa66aac47b due to regressions
	in "info registers" for AArch64/ARM.

	The change caused "info registers" to not print GPR's.

	gdb/ChangeLog:

	2020-02-01  Shahab Vahedi  <shahab@synopsys.com>

	* target-descriptions.c (tdesc_register_in_reggroup_p): Return 0
	when reg->group is empty and reggroup is not.
2020-03-04 13:12:17 -03:00
Tom de Vries
0bab6cf116 [gdb/doc] Remove trailing done from "Reading symbols from" lines
Since commit 3453e7e409 'Clean up "Reading symbols" output' we no longer print
"done." after the "Reading symbols from" message:
...
$ gdb -q a.out
Reading symbols from a.out...
(gdb)
...

Update docs accordingly.

Build on x86_64-linux.

gdb/doc/ChangeLog:

2020-03-04  Tom de Vries  <tdevries@suse.de>

	* gdb.texinfo: Remove trailing "done." in "Reading symbols from" lines.
	* python.texi: Same.
2020-03-04 16:27:56 +01:00
Alok Kumar Sharma
0a709cba00 gdb.fortran: Allow Flang kind printing in fortran testing
In lib/fortran.exp, in the helper function fortran_int4, kind
parameter is expected to be printed as (kind=4) for the LLVM
Fortran compiler, Flang along with gfortran.  And in the helper
function fortran_int8 kind parameter is expected to be printed
as (kind=8).  But for the Flang compiler default kind is not
printed and non default kind is printed differently than gfortran
as below.
  integer(kind=4) => integer
  integer(kind=8) => integer*8
  real(kind=4) => real
  real(kind=8) => double precision
  complex(kind=4) => complex
  logical(kind=4) => logical
  character(kind=1) => character
This commit adds support for printing of kind parameter for the
Flang.  There should be no change when testing with gfortran.

Note: The current patch overrides earlier patch with below details.
  commit c3b149eb76
  Author Alok Kumar Sharma (alokkumar.sharma@amd.com)
Earlier patch was incomplete and based on assumption that flang
should be changed to dump a type with kind like the way gfortan does.
Later it was realized that the way flang dumps this info is not
incorrect but different. And changes in gdb test framework are
finalized.

gdb/testsuite/ChangeLog:

	* lib/fortran.exp (fortran_int4): Handle flang kind printing.
	(fortran_int8): Likewise.
	(fortran_real4): Likewise.
	(fortran_real8): Likewise.
	(fortran_complex4): Likewise.
	(fortran_logical4): Likewise.
	(fortran_character1): Likewise.
2020-03-04 17:16:52 +05:30
Jan Beulich
a847e32224 x86: support VMGEXIT
It has been publicly documented for quite some time, albeit not in the
"General-Purpose and System Instructions" volume:
https://www.amd.com/system/files/TechDocs/24593.pdf.
2020-03-04 08:58:13 +01:00
Alan Modra
45830fd60e Revert "PR25570, ld duplicate "warning: changing start of section""
This reverts commit 91114f7583.
2020-03-04 16:38:59 +10:30
Alan Modra
91114f7583 PR25570, ld duplicate "warning: changing start of section"
PR 25570
	* ldlang.c (lang_size_sections_1): Delay emitting non-fatal
	errors/warnings until final pass.
	* ldexp.c (fold_name): Likewise.
2020-03-04 15:35:59 +10:30
Alan Modra
233bf4f847 sh_addralign inconsistent with sh_addr
The ELF gABI says in part of sh_addralign:  "The value of sh_addr must
be congruent to 0, modulo the value of sh_addralign."

	* elf.c (elf_fake_sections): Ensure sh_addralign is such that
	sh_addr mod sh_addalign is zero.
2020-03-04 15:31:03 +10:30
Alan Modra
1039fd9ac2 Call cleanup on bfd_check_format_matches error exit
* format.c (bfd_check_format_matches): Call cleanup on error exit.
2020-03-04 11:40:01 +10:30
Christian Eggers
eef64366e1 objcopy: Fix for pr19005 on machines with more than one octet per byte.
On machines with more than one octet per byte, objcopy fills only a part
of the gap between sections.

	* objcopy.c (copy_object): Convert from bytes to octets for
	--gap-fill and --pad-to.
2020-03-04 10:59:30 +10:30