Alan Modra [Mon, 9 Dec 2019 10:04:49 +0000 (20:34 +1030)]
PR24960, Memory leak from disassembler
PR 24960
include/
* dis-asm.h (disassemble_free_target): Declare.
opcodes/
* disassemble.c (disassemble_free_target): New function.
binutils/
* objdump.c (disassemble_data): Call disassemble_free_target.
Alan Modra [Mon, 9 Dec 2019 12:16:26 +0000 (22:46 +1030)]
Use disassemble_info.private_data in place of insn_sets
No cgen target uses private_data. This patch removes a
disassemble_info field that is only used by cgen, and instead uses
private_data. It also removes a macro that is no longer used.
include/
* dis-asm.h (struct disassemble_info): Delete insn_sets.
(INIT_DISASSEMBLE_INFO_NO_ARCH): Don't define.
opcodes/
* cgen-dis.in (print_insn_@arch@): Replace insn_sets with private_data.
* disassemble.c (disassemble_init_for_target): Likewise.
* bpf-dis.c: Regenerate.
* epiphany-dis.c: Regenerate.
* fr30-dis.c: Regenerate.
* frv-dis.c: Regenerate.
* ip2k-dis.c: Regenerate.
* iq2000-dis.c: Regenerate.
* lm32-dis.c: Regenerate.
* m32c-dis.c: Regenerate.
* m32r-dis.c: Regenerate.
* mep-dis.c: Regenerate.
* mt-dis.c: Regenerate.
* or1k-dis.c: Regenerate.
* xc16x-dis.c: Regenerate.
* xstormy16-dis.c: Regenerate.
Alan Modra [Mon, 9 Dec 2019 12:27:15 +0000 (22:57 +1030)]
Remove backup ppc struct dis_private.
ppc-dis.c used a global struct whenever malloc failed to provide the
eight bytes of memory necessary for struct dis_private. Which is
quite ridiculous. If that malloc failed there is zero chance some
other malloc won't fail too.
* ppc-dis.c (private): Delete variable.
(get_powerpc_dialect): Don't segfault on NULL info->private_data.
(powerpc_init_dialect): Don't use global private.
Alan Modra [Mon, 9 Dec 2019 10:17:04 +0000 (20:47 +1030)]
Delete duplicate struct objdump_disasm_info field
objdump_disasm_info.sec duplicates disassemble_info.section
* objdump.c (struct objdump_disasm_info): Delete "sec".
(find_symbol_for_address): Use inf->section rather than aux->sec.
(objdump_print_addr, disassemble_bytes): Likewise.
(disassemble_section): Don't set aux->sec.
Alan Modra [Sat, 7 Dec 2019 05:34:33 +0000 (16:04 +1030)]
s12z-opc.c formatting fixes
Wrap overlong lines, whitespace fixes, and for function definitions
start a line with the name of the function.
* s12z-opc.c: Formatting.
George Barrett [Mon, 9 Dec 2019 21:28:39 +0000 (08:28 +1100)]
Fix scripted probe breakpoints
The documentation for make-breakpoint from the Guile API and the `spec'
variant of the gdb.Breakpoint constructor from the Python API state that
the format acceptable for location strings is the same as that accepted
by the break command. However, using the -probe qualifier at the
beginning of the location string causes a GDB internal error as it
attempts to decode a probe location in the wrong code path. Without this
functionality, there doesn't appear to be another way to set breakpoints
on probe points from Python or Guile scripts.
This patch introduces a new helper function that returns a
breakpoint_ops instance appropriate for a parsed location and updates
the Guile and Python bindings to use said function, rather than the
current hard-coded use of bkpt_breakpoint_ops. Since this logic is
duplicated in the handling of the `break' and `trace' commands, those
are also updated to call into the new helper function.
gdb/ChangeLog:
2019-12-10 George Barrett <bob@bob131.so>
Fix scripted probe breakpoints.
* breakpoint.c (tracepoint_probe_breakpoint_ops): Move
declaration forward.
(breakpoint_ops_for_event_location_type)
(breakpoint_ops_for_event_location): Add function definitions.
(break_command_1, trace_command): Use
breakpoint_ops_for_event_location.
* breakpoint.h (breakpoint_ops_for_event_location): Add function
declarations.
* guile/scm-breakpoint.c (gdbscm_register_breakpoint_x): Use
breakpoint_ops_for_event_location.
* python/py-breakpoint.c (bppy_init): Use
breakpoint_ops_for_event_location.
gdb/testsuite/ChangeLog:
2019-12-10 George Barrett <bob@bob131.so>
Test scripted probe breakpoints.
* gdb.guile/scm-breakpoint.c (main): Add probe point.
* gdb.python/py-breakpoint.c (main): Likewise.
* gdb.guile/scm-breakpoint.exp (test_bkpt_probe): Add probe
specifier test.
* gdb.python/py-breakpoint.exp (test_bkpt_probe): Likewise.
Tankut Baris Aktemur [Mon, 9 Dec 2019 16:07:47 +0000 (17:07 +0100)]
gdb: rank an lvalue argument incompatible for an rvalue parameter
Passing an lvalue argument to a function that takes an rvalue parameter
is not allowed per C++ rules. Consider this function:
int g (int &&x) { return x; }
Calling g as in
int i = 5;
int j = g (i);
is illegal. For instance, GCC 9.2.1 yields
~~~
test.cpp: In function ‘int main()’:
test.cpp:6:14: error: cannot bind rvalue reference of type ‘int&&’ to
lvalue of type ‘int’
6 | int j = g (i);
| ^
~~~
GDB currently allows this function call:
~~~
(gdb) print g(i)
$1 = 5
~~~
Fix this by ranking an lvalue argument incompatible with an rvalue
parameter. The behavior after this patch is:
~~~
(gdb) print g(i)
Cannot resolve function g to any overloaded instance
~~~
Tested with GCC 9.2.1.
gdb/ChangeLog:
2019-12-09 Tankut Baris Aktemur <tankut.baris.aktemur@intel.com>
* gdbtypes.c (rank_one_type): Return INCOMPATIBLE_TYPE_BADNESS
when ranking an lvalue argument for an rvalue parameter.
gdb/testsuite/ChangeLog:
2019-12-09 Tankut Baris Aktemur <tankut.baris.aktemur@intel.com>
* gdb.cp/rvalue-ref-overload.cc (g): New function that takes
an rvalue parameter.
* gdb.cp/rvalue-ref-overload.exp: Test calling it with an lvalue
parameter.
Change-Id: I4a6dfc7dac63efa1e3b9f8f391e4b736fbdccdc1
Andrew Burgess [Tue, 3 Dec 2019 20:41:27 +0000 (20:41 +0000)]
gdb/fortran: Improve output pattern in gdb.mi/mi-fortran-modules.exp
Extend the output pattern in mi-fortran-modules.exp to skip some
system modules that appear with versions of GFortran after 7.x.x.
gdb/testsuite/ChangeLog:
* gdb.mi/mi-fortran-modules.exp: Add patterns to skip system
modules.
Change-Id: I64aaa395e554a32e8267ffa096faee53c19c0b9e
Andrew Burgess [Tue, 3 Dec 2019 19:15:06 +0000 (19:15 +0000)]
gdb/testsuite: kfail some tests if using broken gcc
In some cases the Fortran stride information generated by GCC is wrong
with versions of GCC after 7.x.x. This commit adds kfails for the
tests in question with known bad versions of gcc.
The bug has been reported to GCC here:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92775
gdb/testsuite/ChangeLog:
* gdb.fortran/derived-type-striding.exp: KFAIL if we are using a
broken version of GCC.
Change-Id: Iaef08e5e2c87ab3d6983b88f749d40e01aea2bc6
Andrew Burgess [Tue, 3 Dec 2019 13:18:43 +0000 (13:18 +0000)]
gdb/testsuite/fortran: Fix info-modules/info-types for gfortran 8+
The gdb.fortran/info-modules.exp and gdb.fortran/info-types.exp tests
are failing on versions of gfortran after 7.3 due to the inclusion of
extra "system" modules and type that were not being matched by the
current test patterns.
Rather than building increasingly complex patterns that would always
be at risk of breaking with future versions of GCC I have instead
added a new library that parses the output of the following commands:
info types
info variables
info functions
info modules
info module functions
info module variables
into a data structure, the test can than run checks against the
contents of this data structure.
The benefit is that we can simply ignore extra results that we don't
care about.
There is a small risk that a bug in GDB might allow us to start
reporting incorrect results in such a way that the new library will
not spot the error. However, I have tried to mitigate this risk by
adding extra procedures into the test library (see check_no_entry) and
we can add more in future if we wanted to be even more defensive.
I tested this test file with gFortran 7.3.1, 8.3.0, and 9.2.0, I now
see 100% pass in all cases.
gdb/testsuite/ChangeLog:
* gdb.fortran/info-modules.exp: Rewrite to make use of new
sym-info-cmds library.
* gdb.fortran/info-types.exp: Likewise.
* lib/sym-info-cmds.exp: New file.
Change-Id: Iff81624f51b5afb6c95393932f3d94472d7c2970
Wataru Ashihara [Sun, 8 Dec 2019 08:00:43 +0000 (17:00 +0900)]
gdb/darwin-nat.c: Fix template argument for scoped_restore_tmpl
This should be the type of startup_with_shell, whose type was changed
from int to bool at commit
80fd28264.
This fixes the build on macOS:
CXX darwin-nat.o
In file included from ../../gdb/darwin-nat.c:22:
In file included from ../../gdb/top.h:25:
In file included from ../../gdb/value.h:23:
In file included from ../../gdb/frame.h:72:
In file included from ../../gdb/language.h:26:
In file included from ../../gdb/symtab.h:33:
../../gdb/gdbsupport/gdb_optional.h:155:19: error: no matching constructor for initialization of 'scoped_restore_tmpl<int>'
new (&m_item) T (std::forward<Args>(args)...);
^ ~~~~~~~~~~~~~~~~~~~~~~~~
../../gdb/darwin-nat.c:1995:31: note: in instantiation of function template specialization 'gdb::optional<scoped_restore_tmpl<int> >::emplace<bool *, int>' requested here
restore_startup_with_shell.emplace (&startup_with_shell, 0);
^
../../gdb/gdbsupport/scoped_restore.h:69:3: note: candidate constructor template not viable: no known conversion from 'bool *' to 'int *' for 1st argument
scoped_restore_tmpl (T *var, T2 value)
^
../../gdb/gdbsupport/scoped_restore.h:57:3: note: candidate constructor not viable: requires single argument 'var', but 2 arguments were provided
scoped_restore_tmpl (T *var)
^
../../gdb/gdbsupport/scoped_restore.h:76:3: note: candidate constructor not viable: requires single argument 'other', but 2 arguments were provided
scoped_restore_tmpl (const scoped_restore_tmpl<T> &other)
^
1 error generated.
gdb/ChangeLog
2019-12-08 Wataru Ashihara <wataash@wataash.com>
* darwin-nat.c (darwin_nat_target::create_inferior): Fix
template argument for scoped_restore_tmpl from bool to int.
Change-Id: Ia0202efd34dbce69b6af5d035fa55ed89215138a
Jan Beulich [Mon, 9 Dec 2019 12:32:11 +0000 (13:32 +0100)]
x86/Intel: fold "xmmword" with "oword"
These are full aliases of one another, so there's no real need to use
distinct O_md* values for them.
Jan Beulich [Mon, 9 Dec 2019 12:31:39 +0000 (13:31 +0100)]
x86/Intel: support "mmword ptr"
This is an alias of "qword ptr", commonly used with MMX insns.
At this occasion also test (alongside the newly supported "mmword")
- "zmmword" used as expression,
- PADDB with "oword ptr" (aliasing "xmmword ptr").
Jan Beulich [Mon, 9 Dec 2019 12:31:07 +0000 (13:31 +0100)]
x86/Intel: fix "near ptr" / "far ptr" handling
Commit
dc2be329b950 ("i386: Only check suffix in instruction mnemonic")
broke rejecting of these for floating point insns. Fix this by setting
the "byte" operand attribute, which will now (again) cause an error.
Furthermore the diagnostic for the "far ptr" case in general and for the
"near ptr" case in the non-float cases became "invalid instruction
suffix" instead of the intended "operand size mismatch". Fix this by
also setting the "tbyte" operand attribute (no insn template accepts
both byte and tbyte operands).
Jan Beulich [Mon, 9 Dec 2019 12:29:44 +0000 (13:29 +0100)]
x86/Intel: drop pointless suffix setting for "tbyte ptr"
There are extremely few insns accepting "tbyte ptr" operand, so the
"tbyte" operand flag checking done by match_operand_size() is already
sufficient; the setting of the suffix has become meaningless anyway
with
dc2be329b950 ("i386: Only check suffix in instruction mnemonic").
Fold the code with that setting the "byte" operand flag to force an
error (no insn at all accepts both "byte ptr" and tbyte ptr" operands,
except for AnySize ones where the two (conflicting) recorded types
don't matter (operand_size_match() doesn't call match_operand_size() in
this case).
Jan Beulich [Mon, 9 Dec 2019 12:29:14 +0000 (13:29 +0100)]
x86/Intel: drop pointless suffix setting for "fword ptr"
No floating point insn accepts an "fword ptr" operand, so the "fword"
operand flag checking done by match_mem_size() is already sufficient;
the setting of the suffix has become meaningless anyway with
dc2be329b950 ("i386: Only check suffix in instruction mnemonic").
Jan Beulich [Mon, 9 Dec 2019 12:28:43 +0000 (13:28 +0100)]
x86/Intel: drop pointless special casing of LxS
LDS et al don't accept "word ptr" operands anyway, as per their insn
templates. Hence there's no need to special case this here; the check
has become dysfunctional anyway by
dc2be329b950 ("i386: Only check
suffix in instruction mnemonic").
GDB Administrator [Mon, 9 Dec 2019 00:00:26 +0000 (00:00 +0000)]
Automatic date update in version.in
Alan Modra [Sat, 7 Dec 2019 00:55:52 +0000 (11:25 +1030)]
S12Z disassembler memory leak
* s12z-opc.c (exg_sex_discrim): Don't leak memory on invalid
registers.
Alan Modra [Sat, 7 Dec 2019 12:01:43 +0000 (22:31 +1030)]
aarch64*-*-*ilp32 gas tests
The new pac_negate_ra_state test adds yet another failure on aarch64
ipl32 targets. This patch fixes that particular problem and a few
more that are trivial to fix.
* testsuite/gas/aarch64/bfloat16.d: Match 32-bit and 64-bit output.
* testsuite/gas/aarch64/dgh.d: Likewise.
* testsuite/gas/aarch64/f32mm.d: Likewise.
* testsuite/gas/aarch64/f64mm.d: Likewise.
* testsuite/gas/aarch64/i8mm.d: Likewise.
* testsuite/gas/aarch64/pac_ab_key.d: Likewise.
* testsuite/gas/aarch64/pac_negate_ra_state.d: Likewise.
* testsuite/gas/aarch64/reloc-prel_g0.d: Likewise.
* testsuite/gas/aarch64/reloc-prel_g0_nc.d: Likewise.
* testsuite/gas/aarch64/reloc-prel_g1.d: Likewise.
* testsuite/gas/aarch64/sve-bfloat-movprfx.d: Likewise.
* testsuite/gas/aarch64/sve-movprfx-mm.d: Likewise.
* testsuite/gas/aarch64/sve2.d: Likewise.
Alan Modra [Sat, 7 Dec 2019 12:02:52 +0000 (22:32 +1030)]
Optional matching for run_dump_test
This adds an alternative to using #... in dump files, useful where we
only want to allow specific extra output. DW_CFA_nop in CIEs and FDEs
to pad out to required alignment (larger for 64-bit than 32-bit) is
an example where these optional match patterns are useful.
binutils/
* testsuite/lib/binutils-common.exp (regexp_diff): Support #?REGEXP.
ld/
* testsuite/ld-elf/eh4.d: Match optional padding DW_CFA_nop in FDEs.
* testsuite/ld-elf/eh5.d: Likewise, and extra CIEs emitted on
embedded targets.
Tom de Vries [Sun, 8 Dec 2019 10:25:28 +0000 (11:25 +0100)]
Fix inter-CU references using intra-CU form in imported-unit
When running the gdb testsuite with the cc-with-dwz board, I run into:
...
Running gdb/testsuite/gdb.dwarf2/imported-unit.exp ...
gdb compile failed, dwz: gdb.dwarf2/imported-unit/imported-unit: \
Couldn't find DIE referenced by DW_AT_abstract_origin
cc-with-tweaks.sh: dwz did not modify gdb.dwarf2/imported-unit/imported-unit.
...
The problem is that the DW_AT_abstract_origin reference here:
...
<0><d2>: Abbrev Number: 2 (DW_TAG_compile_unit)
<1><e6>: Abbrev Number: 4 (DW_TAG_subprogram)
<e7> DW_AT_abstract_origin: <0x142>
<eb> DW_AT_low_pc : 0x4004b2
<f3> DW_AT_high_pc : 0x4004c8
...
referring to a DIE in another compilation unit here:
...
<0><129>: Abbrev Number: 2 (DW_TAG_compile_unit)
<1><142>: Abbrev Number: 4 (DW_TAG_subprogram)
<143> DW_AT_name : main
<148> DW_AT_type : <0x13b>
<14c> DW_AT_external : 1
...
is encoded using intra-CU reference form DW_FORM_ref4 instead of intra-CU
reference DW_FORM_ref_addr:
...
4 DW_TAG_subprogram [has children]
DW_AT_abstract_origin DW_FORM_ref4
DW_AT_low_pc DW_FORM_addr
DW_AT_high_pc DW_FORM_addr
DW_AT value: 0 DW_FORM value: 0
...
Fix this in the DWARF assembler by making all inter-CU references use the '%'
label prefix.
Tested on x86_64-linux.
gdb/testsuite/ChangeLog:
2019-12-08 Tom de Vries <tdevries@suse.de>
* gdb.dwarf2/imported-unit.exp: Fix inter-CU references.
Change-Id: I690ff18c3943705ed478453531b176ff74700f3c
GDB Administrator [Sun, 8 Dec 2019 00:01:12 +0000 (00:01 +0000)]
Automatic date update in version.in
Keith Seitz [Sat, 7 Dec 2019 17:35:03 +0000 (09:35 -0800)]
Core file build-id support
This patch uses new BFD support for detecting build-ids in core
files.
After this patch, it is possible to run gdb with only the
core file, and gdb will automatically load the executable and
debug info [example from tests]:
$ gdb -nx -q
(gdb) core-file corefile-buildid.core
[New LWP 29471]
Reading symbols from gdb.base/corefile-buildid/debugdir-exec/.build-id/36/
fe5722c5a7ca3ac746a84e223c6a2a69193a24...
Core was generated by `outputs/gdb.base/coref'.
Program terminated with signal SIGABRT, Aborted.
(gdb)
This work is based on functionality available in Fedora originally
written by Jan Kratochvil.
Regression tested on buildbot.
gdb/ChangeLog:
2019-12-07 Keith Seitz <keiths@redhat.com>
* build-id.c (build_id_bfd_get): Permit bfd_core, too.
(build_id_to_debug_bfd): Make static, rewriting to use
build_id_to_bfd_suffix.
(build_id_to_bfd_suffix): Copy of build_id_to_debug_bfd,
adding `suffix' parameter. Append SUFFIX to file names
when searching for matching files.
(build_id_to_debug_bfd): Use build_id_to_bfd_suffix.
(build_id_to_exec_bfd): Likewise.
* build-id.h (build_id_to_debug_bfd): Clarify that function
searches for BFD of debug info file.
(build_id_to_exec_bfd): Declare.
* corelow.c: Include build-id.h.
(locate_exec_from_corefile_build_id): New function.
(core_target_open): If no executable BFD is found,
search for a core file BFD using build-id.
gdb/testsuite/ChangeLog:
2019-12-07 Keith Seitz <keiths@redhat.com>
* gdb.base/corefile-buildid-shlib-shr.c: New file.
* gdb.base/corefile-buildid-shlib.c: New file.
* gdb.base/corefile-buildid.c: New file.
* gdb.base/corefile-buildid.exp: New file.
Change-Id: I15e9e8e58f10c68b5cae55e2eba58df1e8aef529
Alan Modra [Fri, 6 Dec 2019 00:51:45 +0000 (11:21 +1030)]
PR25236, common sym versioning
In cases where a relocatable object file has a common symbol, no other
file has a definition, and there is a matching common symbol found in
a shared library then ld will output a definition using the largest of
size and alignment for the commons. This patch fixes a bug in ld that
ignored common symbols when assigning versions, resulting in such
symbols being given VER_NDX_LOCAL versions.
PR 25236
* elflink.c (_bfd_elf_link_assign_sym_version): Assign versions
for ELF_COMMON_DEF_P symbols.
(elf_link_output_extsym, _bfd_elf_add_default_symbol): Adjust to
suit.
GDB Administrator [Sat, 7 Dec 2019 00:00:19 +0000 (00:00 +0000)]
Automatic date update in version.in
Luis Machado [Tue, 26 Nov 2019 15:52:56 +0000 (12:52 -0300)]
[ARM, sim] Fix build error and warnings
Newer GCC's have switched to -fno-common by default, and this breaks the build
for the ARM sim, like this:
binutils-gdb.git~gdb-8.3-release/sim/arm/maverick.c:65: multiple definition of `DSPsc'; libsim.a(wrapper.o):binutils-gdb.git~gdb-8.3-release/sim/arm/wrapper.c:134: first defined here
binutils-gdb.git~gdb-8.3-release/sim/arm/maverick.c:64: multiple definition of `DSPacc'; libsim.a(wrapper.o):binutils-gdb.git~gdb-8.3-release/sim/arm/wrapper.c:133: first defined here
binutils-gdb.git~gdb-8.3-release/sim/arm/maverick.c:63: multiple definition of `DSPregs'; libsim.a(wrapper.o):binutils-gdb.git~gdb-8.3-release/sim/arm/wrapper.c:132: first defined here
I also noticed a few warnings due to mismatching types, as follows:
../../../../repos/binutils-gdb/sim/arm/wrapper.c: In function ‘sim_create_inferior’:
../../../../repos/binutils-gdb/sim/arm/wrapper.c:335:16: warning: assignment discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
for (arg = argv; *arg != NULL; arg++)
^
../../../../repos/binutils-gdb/sim/arm/wrapper.c:342:8: warning: assignment discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
arg = argv;
^
../../../../repos/binutils-gdb/sim/arm/wrapper.c:345:13: warning: assignment discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
for (arg = argv; *arg != NULL; arg++)
^
The following patch fixes both of the above.
sim/arm/ChangeLog:
2019-12-06 Luis Machado <luis.machado@linaro.org>
* armemu.c (isize): Move this declaration ...
* arminit.c (isize): ... here.
* maverick.h: New file.
* wrapper.c: Include "maverick.h".
(<struct maverick_regs>, <union maverick_acc_regs>): Remove and update
comment.
(sim_create_inferior): Cast variables to proper type.
* maverick.c: Include "maverick.h".
(<struct maverick_regs>, <union maverick_acc_regs>): Move
declarations to maverick.h and update comment.
(DSPsc, DSPacc, DSPregs): Adjust comment.
Change-Id: I21db699d3b61b2de8c44053e47be4387285af28f
Christian Biesinger [Mon, 2 Dec 2019 21:05:54 +0000 (15:05 -0600)]
Put bcache inside "namespace gdb"
This avoids a conflict with a system "struct bcache" on
Solaris (see e.g.
https://www.isi.edu/nsnam/archive/ns-users/webarch/2001/msg05393.html)
Note that the Solaris conflict for now only surfaces with
--enable-targets=all (which the build bot doesn't use).
gdb/ChangeLog:
2019-12-06 Christian Biesinger <cbiesinger@google.com>
* bcache.c: Put in namespace gdb.
* bcache.h: Likewise.
* gdbtypes.c (check_types_worklist): Update.
(types_deeply_equal): Update.
* macrotab.c (struct macro_table) <bcache>: Update.
(new_macro_table): Update.
* macrotab.h (struct bcache): Put this forward declaration
inside namespace gdb.
(new_macro_table): Update.
* objfiles.h (struct objfile_per_bfd_storage) <filename_cache>:
Update.
<macro_cache>: Update.
* psymtab.h: (psymtab_storage) <psymbol_cache>: Update.
Change-Id: I843d5e91f7ccb3db6d1099a8214c15a74510256f
Tom de Vries [Fri, 6 Dec 2019 17:51:49 +0000 (18:51 +0100)]
[gdb/symtab] Prefer var def over decl
Consider the DWARF as generated by gcc with the tentative patch to fix gcc
PR91507 - "wrong debug for completed array with previous incomplete
declaration":
...
<1><f4>: Abbrev Number: 2 (DW_TAG_array_type)
<f5> DW_AT_type : <0xff>
<f9> DW_AT_sibling : <0xff>
<2><fd>: Abbrev Number: 3 (DW_TAG_subrange_type)
<2><fe>: Abbrev Number: 0
<1><ff>: Abbrev Number: 4 (DW_TAG_pointer_type)
<100> DW_AT_byte_size : 8
<101> DW_AT_type : <0x105>
<1><105>: Abbrev Number: 5 (DW_TAG_base_type)
<106> DW_AT_byte_size : 1
<107> DW_AT_encoding : 6 (signed char)
<108> DW_AT_name : (indirect string, offset: 0x19f): char
<1><10c>: Abbrev Number: 6 (DW_TAG_variable)
<10d> DW_AT_name : zzz
<111> DW_AT_decl_file : 1
<112> DW_AT_decl_line : 1
<113> DW_AT_decl_column : 14
<114> DW_AT_type : <0xf4>
<118> DW_AT_external : 1
<118> DW_AT_declaration : 1
<1><118>: Abbrev Number: 2 (DW_TAG_array_type)
<119> DW_AT_type : <0xff>
<11d> DW_AT_sibling : <0x128>
<1><12f>: Abbrev Number: 8 (DW_TAG_variable)
<130> DW_AT_specification: <0x10c>
<134> DW_AT_decl_line : 2
<135> DW_AT_decl_column : 7
<136> DW_AT_type : <0x118>
<13a> DW_AT_location : 9 byte block: 3 30 10 60 0 0 0 0 0 (DW_OP_addr: 601030)
...
The DWARF will result in two entries in the symbol table, a decl with type
char *[] and a def with type char*[2].
When trying to print the value of zzz:
...
$ gdb a.spec.out -batch -ex "p zzz"
...
the decl (rather than the def) will be found in the symbol table, which is
missing the location information, and consequently we get:
...
$1 = 0x601030 <zzz>
...
[ There is a fallback mechanism that finds the address of the variable in the
minimal symbol table, but that's not used here, because the type of the decl
does not specify a size. We could use the symbol size here to get the size
of the type, but that's currently not done: PR exp/24989. Still, fixing that
PR would not fix the generic case, where minimal symbol info is not
available. ]
Fix this by preferring defs over decls when searching in the symbol table.
Build and reg-tested on x86_64-linux.
gdb/ChangeLog:
2019-12-06 Tom de Vries <tdevries@suse.de>
PR symtab/24971
* block.c (best_symbol, better_symbol): New function.
(block_lookup_symbol_primary, block_lookup_symbol): Prefer def over
decl.
gdb/testsuite/ChangeLog:
2019-12-06 Tom de Vries <tdevries@suse.de>
* gdb.dwarf2/varval.exp: Add decl before def test.
Change-Id: Id92326cb8ef9903b121ef9e320658eb565d0f5a9
Kyrylo Tkachov [Fri, 6 Dec 2019 10:46:32 +0000 (10:46 +0000)]
[gas] Implement .cfi_negate_ra_state directive
This patch implements the .cfi_negate_ra_state to be consistent with
LLVM (https://reviews.llvm.org/D50136). The relevant DWARF code DW_CFA_AARCH64_negate_ra_state
is multiplexed on top of DW_CFA_GNU_window_save, as per
https://gcc.gnu.org/ml/gcc-patches/2017-08/msg00753.html
I believe this is the simplest patch implementing this and is needed to
allow users to build, for example, the Linux kernel with Armv8.3-A
pointer authentication support with Clang while using gas as the
assembler, which is a common usecase.
gas/
2019-12-06 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
* dw2gencfi.c (cfi_pseudo_table): Add cfi_negate_ra_state.
* testsuite/gas/aarch64/pac_negate_ra_state.s: New file.
* testsuite/gas/aarch64/pac_negate_ra_state.d: Likewise.
Alan Modra [Fri, 6 Dec 2019 03:08:42 +0000 (13:38 +1030)]
Re: Only give FDE encoding warnings if --eh-frame-hdr was specified.
For mips*-linux targets, fixes the following fails.
FAIL: MIPS eh-frame 1, n32
FAIL: MIPS eh-frame 1, n64
FAIL: MIPS eh-frame 2, n32
FAIL: MIPS eh-frame 2, n64
* testsuite/ld-mips-elf/eh-frame1-n32.d: Pass --eh-frame-hdr to ld.
* testsuite/ld-mips-elf/eh-frame1-n64.d: Likewise.
* testsuite/ld-mips-elf/eh-frame2-n32.d: Likewise.
* testsuite/ld-mips-elf/eh-frame2-n64.d: Likewise.
Tankut Baris Aktemur [Tue, 12 Nov 2019 15:06:29 +0000 (16:06 +0100)]
gdb/testsuite: do minor clean-up in gdb.cp/rvalue-ref-overload.exp
Simplify the expected test outputs. This is a minor cleanup; no
functional change is intended.
gdb/testsuite/ChangeLog:
2019-12-06 Tankut Baris Aktemur <tankut.baris.aktemur@intel.com>
* gdb.cp/rvalue-ref-overload.exp: Minor cleanup.
Change-Id: Ie760a2856cae3be0eeed5496765a5f1cd102d6b7
Tankut Baris Aktemur [Tue, 12 Nov 2019 14:12:43 +0000 (15:12 +0100)]
gdb: fix overload resolution for see-through references
The overload resolution mechanism assigns badness values to the
necessary conversions to be made on types to pick a champion. A
badness value consists of a "rank" that scores the conversion and a
"subrank" to differentiate conversions of the same kind.
An auxiliary function, 'sum_ranks', is used for adding two badness
values. In all of its uses, except two, 'sum_ranks' is used for
populating the subrank of a badness value. The two exceptions are in
'rank_one_type':
~~~
/* See through references, since we can almost make non-references
references. */
if (TYPE_IS_REFERENCE (arg))
return (sum_ranks (rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL),
REFERENCE_CONVERSION_BADNESS));
if (TYPE_IS_REFERENCE (parm))
return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL),
REFERENCE_CONVERSION_BADNESS));
~~~
Here, the result of a recursive call is combined with
REFERENCE_CONVERSION_BADNESS. This leads to the problem of
over-punishment by combining two ranks. Consider this:
void an_overloaded_function (const foo &);
void an_overloaded_function (const foo &&);
...
foo arg;
an_overloaded_function(arg);
When ranking 'an_overloaded_function (const foo &)', the badness
values REFERENCE_CONVERSION_BADNESS and CV_CONVERSION_BADNESS are
combined, whereas 'rank_one_type' assigns only the
REFERENCE_CONVERSION_BADNESS value to 'an_overloaded_function (const
foo &&)' (there is a different execution flow for that). This yields
in GDB picking the latter function as the overload champion instead of
the former.
In fact, the 'rank_one_type' function should have given
'an_overloaded_function (const foo &)' the CV_CONVERSION_BADNESS
value, with the see-through referencing increasing the subrank a
little bit. This can be achieved by introducing a new badness value,
REFERENCE_SEE_THROUGH_BADNESS, which bumps up the subrank only, and
using it in the two "exceptional" cases of 'sum_ranks'.
gdb/ChangeLog:
2019-12-06 Tankut Baris Aktemur <tankut.baris.aktemur@intel.com>
* gdbtypes.h: Define the REFERENCE_SEE_THROUGH_BADNESS value.
* gdbtypes.c (rank_one_type): Use REFERENCE_SEE_THROUGH_BADNESS
for ranking see-through reference cases.
gdb/testsuite/ChangeLog:
2019-12-06 Tankut Baris Aktemur <tankut.baris.aktemur@intel.com>
* gdb.cp/rvalue-ref-overload.cc: Add a case that involves both
CV and reference conversion for overload resolution.
* gdb.cp/rvalue-ref-overload.exp: Test it.
Change-Id: I39ae6505ab85ad0bd21915368c82540ceeb3aae9
Philippe Waroquiers [Thu, 5 Dec 2019 22:41:58 +0000 (23:41 +0100)]
Fix crash when command arg is missing in faas/taas/tfaas commands.
GDB crashes when doing:
(gdb) faas
Aborted
Do the needed check to avoid crashing.
gdb/ChangeLog
2019-12-06 Philippe Waroquiers <philippe.waroquiers@skynet.be>
* stack.c (faas_command): Check a command is provided.
* thread.c (taas_command, tfaas_command): Likewise.
gdb/testsuite/ChangeLog
2019-12-06 Philippe Waroquiers <philippe.waroquiers@skynet.be>
* gdb.threads/pthreads.exp: Test taas and tfaas without command.
* gdb.base/frameapply.exp: Test faas without command.
GDB Administrator [Fri, 6 Dec 2019 00:00:39 +0000 (00:00 +0000)]
Automatic date update in version.in
Philippe Waroquiers [Sun, 1 Dec 2019 14:40:17 +0000 (15:40 +0100)]
Fix leaks when pruning inferiors.
Valgrind detects various inferior related leaks, such as:
==31877== 5,530 (56 direct, 5,474 indirect) bytes in 1 blocks are definitely lost in loss record 7,131 of 7,355
==31877== at 0x4C2E18C: calloc (vg_replace_malloc.c:760)
==31877== by 0x23E580: xcalloc (alloc.c:100)
==31877== by 0x4794A9: xcnewvec<void*> (poison.h:158)
==31877== by 0x4794A9: registry_alloc_data(registry_data_registry*, registry_fields*) (registry.c:51)
==31877== by 0x3A537C: inferior_alloc_data (inferior.c:43)
==31877== by 0x3A537C: inferior::inferior(int) (inferior.c:92)
==31877== by 0x3A5426: add_inferior_silent(int) (inferior.c:98)
==31877== by 0x3A5530: add_inferior(int) (inferior.c:122)
...
Origin of the leaks is in prune_inferiors: prune_inferiors is first removing
the inferior to prune from the inferior list, then calls delete_inferior.
But delete_inferior will only really destroy the inferior when it finds
it into the inferior list.
As delete_inferior is removing the inferior to delete from the inferior list,
ensure prune_inferiors only calls delete_inferior, without touching the
inferior list.
gdb/ChangeLog
2019-12-05 Philippe Waroquiers <philippe.waroquiers@skynet.be>
* inferior.c (prune_inferiors): Only call delete_inferior.
Do not modify the inferior list.
Sandra Loosemore [Thu, 5 Dec 2019 21:20:12 +0000 (13:20 -0800)]
Only give FDE encoding warnings if --eh-frame-hdr was specified.
This bug was observed on nios2-linux-gnu with some C++ programs
linked with -pie or -shared. The nios2 ABI doesn't include appropriate
relocations in this instance and GCC is also being patched not to pass
--eh-frame-hdr to the linker in those cases.
2019-12-05 Sandra Loosemore <sandra@codesourcery.com>
bfd/
* elf-eh-frame.c (_bfd_elf_discard_section_eh_frame): Make
FDE encoding warning conditional.
Simon Marchi [Thu, 5 Dec 2019 18:44:30 +0000 (13:44 -0500)]
Remove gdbarch parameter of lookup_typename
I noticed that the gdbarch parameter of lookup_typename was unused, so I
removed it (as well as from lookup_signed_typename and
lookup_unsigned_typename) and updated all callers.
Tested by rebuilding.
gdb/ChangeLog:
* c-exp.y: Update calls to lookup_typename,
lookup_signed_typename and lookup_unsigned_typename.
* c-lang.c (evaluate_subexp_c): Likewise.
* cp-namespace.c (cp_lookup_symbol_imports_or_template):
Likewise.
* eval.c (binop_promote): Likewise.
* gdbtypes.c (lookup_typename): Remove gdbarch parameter.
(lookup_unsigned_typename): Likewise.
(lookup_signed_typename): Likewise.
* gdbtypes.h (lookup_unsigned_typename): Likewise.
(lookup_signed_typename): Likewise.
(lookup_typename): Likewise.
* guile/scm-type.c (tyscm_lookup_typename): Update calls to
lookup_typename, lookup_signed_typename,
lookup_unsigned_typename.
* m2-exp.y: Likewise.
* printcmd.c (printf_wide_c_string): Likewise.
(ui_printf): Likewise.
* python/py-type.c (typy_lookup_typename): Likewise.
* python/py-xmethods.c (python_xmethod_worker::invoke):
Likewise.
* rust-exp.y: Likewise.
Nick Clifton [Thu, 5 Dec 2019 13:56:07 +0000 (13:56 +0000)]
Fix a problem computing the size fields in the PE format header.
PR 25029
* peXXigen.c (_bfd_XXi_swap_aouthdr_out): Ignore empty sections
when computing the sizes stored in the headers.
Alan Modra [Thu, 5 Dec 2019 10:59:21 +0000 (21:29 +1030)]
Re: PR25244, --print-memory-usage, division by zero if MEMORY length is zero
Do print the linefeed when length is zero.
PR 25244
* ldlang.c (lang_print_memory_usage): Correct last patch.
Jan Beulich [Thu, 5 Dec 2019 07:44:22 +0000 (08:44 +0100)]
Arm64: simplify Crypto arch extension handling
This, at the assembler level, is just a "brace" feature covering both
AES and SHA2. Hence there's no need for it to have a separate feature
flag, freeing up a bit for future re-use. Along these lines there are
also a number of dead definitions/variables in the opcode table file.
Jan Beulich [Thu, 5 Dec 2019 07:43:03 +0000 (08:43 +0100)]
Arm64: correct "sha3" arch-extension directive handling
SHA2 is a prereq to SHA3, not part of it aiui. Hence disabling the
latter should not also disable the former.
In the course of adding respective tests also do away with the
duplication of crypto.d's contents in crypto-directive.d.
Alan Modra [Thu, 5 Dec 2019 06:10:02 +0000 (16:40 +1030)]
PR25243, static linking with exceptions and iostream is broken on ARM
PR 25243
* emulparams/armelf.sh (OTHER_READONLY_SECTIONS): Move definition
of __exidx_start and __exidx_end into ARM.exidx.
* emulparams/armelf_linux_eabi.sh (OTHER_READONLY_SECTIONS): Likewise.
* emulparams/armsymbian.sh (OTHER_READONLY_SECTIONS): Similarly.
* emulparams/elf32_tic6x_le.sh (OTHER_READONLY_SECTIONS): Similarly.
* emulparams/armelf_fuchsia.sh: Source armelf_linux_eabi.sh,
just redefining TEXT_START_ADDR.
* emulparams/armelf_linux_fdpiceabi.sh: Source armelf_linux_eabi.sh,
adding to OTHER_READONLY_SECTIONS.
Alan Modra [Thu, 5 Dec 2019 06:07:25 +0000 (16:37 +1030)]
PR25244, --print-memory-usage, division by zero if MEMORY length is zero
PR 25244
* ldlang.c (lang_print_memory_usage): Don't print percent used
when length is zero.
Alan Modra [Thu, 5 Dec 2019 04:12:44 +0000 (14:42 +1030)]
PR25249, Memory leak in microblaze-dis.c
PR 25249
* microblaze-dis.c (NUM_STRBUFS, STRBUF_SIZE): Define.
(struct string_buf): New.
(strbuf): New function.
(get_field): Use strbuf rather than strdup of local temp.
(get_field_imm, get_field_imm5, get_field_imm5_mbar): Likewise.
(get_field_rfsl, get_field_imm15): Likewise.
(get_field_rd, get_field_r1, get_field_r2): Update macros.
(get_field_special): Likewise. Don't strcpy spr. Formatting.
(print_insn_microblaze): Formatting. Init and pass string_buf to
get_field functions.
GDB Administrator [Thu, 5 Dec 2019 00:00:39 +0000 (00:00 +0000)]
Automatic date update in version.in
Christian Biesinger [Fri, 22 Nov 2019 17:03:15 +0000 (11:03 -0600)]
Fix (most) OpenBSD link errors
This fixes these errors:
ld: error: undefined symbol: x86_stopped_by_hw_breakpoint()
>>> referenced by x86-nat.h:109 (../../gdb/x86-nat.h:109)
>>> amd64-obsd-nat.o:(x86_nat_target<obsd_nat_target>::stopped_by_hw_breakpoint())
ld: error: undefined symbol: x86_can_use_hw_breakpoint(bptype, int, int)
>>> referenced by x86-nat.h:76 (../../gdb/x86-nat.h:76)
>>> amd64-obsd-nat.o:(x86_nat_target<obsd_nat_target>::can_use_hw_breakpoint(bptype, int, int))
ld: error: undefined symbol: x86_insert_hw_breakpoint(gdbarch*, bp_target_info*)
>>> referenced by x86-nat.h:93 (../../gdb/x86-nat.h:93)
>>> amd64-obsd-nat.o:(x86_nat_target<obsd_nat_target>::insert_hw_breakpoint(gdbarch*, bp_target_info*))
ld: error: undefined symbol: x86_remove_hw_breakpoint(gdbarch*, bp_target_info*)
>>> referenced by x86-nat.h:97 (../../gdb/x86-nat.h:97)
>>> amd64-obsd-nat.o:(x86_nat_target<obsd_nat_target>::remove_hw_breakpoint(gdbarch*, bp_target_info*))
ld: error: undefined symbol: x86_remove_watchpoint(unsigned long, int, target_hw_bp_type, expression*)
>>> referenced by x86-nat.h:89 (../../gdb/x86-nat.h:89)
>>> amd64-obsd-nat.o:(x86_nat_target<obsd_nat_target>::remove_watchpoint(unsigned long, int, target_hw_bp_type, expression*))
ld: error: undefined symbol: x86_insert_watchpoint(unsigned long, int, target_hw_bp_type, expression*)
>>> referenced by x86-nat.h:84 (../../gdb/x86-nat.h:84)
>>> amd64-obsd-nat.o:(x86_nat_target<obsd_nat_target>::insert_watchpoint(unsigned long, int, target_hw_bp_type, expression*))
ld: error: undefined symbol: x86_stopped_by_watchpoint()
>>> referenced by x86-nat.h:100 (../../gdb/x86-nat.h:100)
>>> amd64-obsd-nat.o:(x86_nat_target<obsd_nat_target>::stopped_by_watchpoint())
ld: error: undefined symbol: x86_stopped_data_address(unsigned long*)
>>> referenced by x86-nat.h:103 (../../gdb/x86-nat.h:103)
>>> amd64-obsd-nat.o:(x86_nat_target<obsd_nat_target>::stopped_data_address(unsigned long*))
ld: error: undefined symbol: x86_region_ok_for_hw_watchpoint(unsigned long, int)
>>> referenced by x86-nat.h:79 (../../gdb/x86-nat.h:79)
>>> amd64-obsd-nat.o:(x86_nat_target<obsd_nat_target>::region_ok_for_hw_watchpoint(unsigned long, int))
and
ld: error: undefined symbol: x86_dr_insert_watchpoint(x86_debug_reg_state*, target_hw_bp_type, unsigned long, int)
>>> referenced by x86-nat.c:156 (../../gdb/x86-nat.c:156)
>>> x86-nat.o:(x86_insert_watchpoint(unsigned long, int, target_hw_bp_type, expression*))
ld: error: undefined symbol: x86_dr_remove_watchpoint(x86_debug_reg_state*, target_hw_bp_type, unsigned long, int)
>>> referenced by x86-nat.c:169 (../../gdb/x86-nat.c:169)
>>> x86-nat.o:(x86_remove_watchpoint(unsigned long, int, target_hw_bp_type, expression*))
ld: error: undefined symbol: x86_dr_region_ok_for_watchpoint(x86_debug_reg_state*, unsigned long, int)
>>> referenced by x86-nat.c:181 (../../gdb/x86-nat.c:181)
>>> x86-nat.o:(x86_region_ok_for_hw_watchpoint(unsigned long, int))
ld: error: undefined symbol: x86_dr_stopped_data_address(x86_debug_reg_state*, unsigned long*)
>>> referenced by x86-nat.c:194 (../../gdb/x86-nat.c:194)
>>> x86-nat.o:(x86_stopped_data_address(unsigned long*))
ld: error: undefined symbol: x86_dr_stopped_by_watchpoint(x86_debug_reg_state*)
>>> referenced by x86-nat.c:206 (../../gdb/x86-nat.c:206)
>>> x86-nat.o:(x86_stopped_by_watchpoint())
ld: error: undefined symbol: x86_dr_insert_watchpoint(x86_debug_reg_state*, target_hw_bp_type, unsigned long, int)
>>> referenced by x86-nat.c:219 (../../gdb/x86-nat.c:219)
>>> x86-nat.o:(x86_insert_hw_breakpoint(gdbarch*, bp_target_info*))
ld: error: undefined symbol: x86_dr_remove_watchpoint(x86_debug_reg_state*, target_hw_bp_type, unsigned long, int)
>>> referenced by x86-nat.c:233 (../../gdb/x86-nat.c:233)
>>> x86-nat.o:(x86_remove_hw_breakpoint(gdbarch*, bp_target_info*))
ld: error: undefined symbol: x86_dr_stopped_by_hw_breakpoint(x86_debug_reg_state*)
>>> referenced by x86-nat.c:269 (../../gdb/x86-nat.c:269)
>>> x86-nat.o:(x86_stopped_by_hw_breakpoint())
It does not fix:
ld: error: can't create dynamic relocation R_X86_64_64 against symbol: __gmp_binvert_limb_table in readonly segment; recompile object files with -fPIC or pass '-Wl,-z,notext' to allow text relocations in the output
>>> defined in /usr/local/lib/libgmp.a(mp_minv_tab.o)
>>> referenced by tmp-dive_1.s
>>> dive_1.o:(__gmpn_divexact_1) in archive /usr/local/lib/libgmp.a
ld: error: can't create dynamic relocation R_X86_64_64 against symbol: __gmp_binvert_limb_table in readonly segment; recompile object files with -fPIC or pass '-Wl,-z,notext' to allow text relocations in the output
>>> defined in /usr/local/lib/libgmp.a(mp_minv_tab.o)
>>> referenced by tmp-bdiv_q_1.s
>>> bdiv_q_1.o:(__gmpn_bdiv_q_1) in archive /usr/local/lib/libgmp.a
ld: error: can't create dynamic relocation R_X86_64_64 against symbol: __gmpn_invert_limb_table in readonly segment; recompile object files with -fPIC or pass '-Wl,-z,notext' to allow text relocations in the output
>>> defined in /usr/local/lib/libgmp.a(invert_limb_table.o)
>>> referenced by tmp-invert_limb.s
>>> invert_limb.o:(__gmpn_invert_limb) in archive /usr/local/lib/libgmp.a
gdb/ChangeLog:
2019-12-04 Christian Biesinger <cbiesinger@google.com>
* configure.nat (obsd64): Add missing files x86-nat.o and
nat/x86-dregs.o.
Change-Id: I4a443c0cf805efd7b45feaabd729a01b07772724
Tom Tromey [Tue, 3 Dec 2019 00:17:45 +0000 (17:17 -0700)]
Use metadata style in a few more places
I happened to find a few more spots that should use metadata style,
but do not. I missed these in my earlier search somehow. This patch
also adds gettext markup in a couple of spots where it was missing.
gdb/ChangeLog
2019-12-04 Tom Tromey <tom@tromey.com>
* valprint.c (val_print_string): Use metadata_style.
* go-valprint.c (print_go_string): Use metadata style.
* p-valprint.c (pascal_object_print_static_field): Use metadata
style.
* cp-valprint.c (cp_print_static_field): Use metadata style.
Change-Id: Id82ca2aa306c6694b111d5c92dfa6f0cce919ebf
Andrew Burgess [Wed, 27 Nov 2019 21:51:35 +0000 (21:51 +0000)]
gdb/testsuite: Use -J option when compiling Fortran tests
When compiling Fortran tests (e.g. gdb.fortran/info-modules.exp), the
Fotran compile produces .mod files. These files contain details of
compiled modules that are then consumed by the compiler when compiling
other files that USE a module.
Currently the compiler writes the .mod files into its current
directory, so for us this turns out to be 'build/gdb/testsuite/'.
This means that .mod files can be shared between tests, which seems
against the spirit of the GDB testsuite; source files should be
compiled fresh for each test.
This commit adds the -J option to the compiler flags whenever we
compile a Fortran file, this option tells the compiler where to write,
and look for, .mod files.
After this commit there was one Fortran test that needed fixing, with
that fix in place all of the Fortran tests pass again, but now the
.mod files are now produced in the per-test output directories.
gdb/testsuite/ChangeLog:
* lib/gdb.exp (gdb_compile): Add -J compiler option when building
Fortran tests.
* gdb.mi/mi-fortran-modules.exp: Compile source files in correct
order.
Change-Id: I99444cf22d80e320093d3f3ed9abb8825f378e0b
Andrew Burgess [Tue, 3 Dec 2019 10:52:05 +0000 (10:52 +0000)]
gdb/fortran: Support for single/double type modifiers
Extend the Fortran parser to support 'single precision' and 'double
precision' types as well 'single complex' and 'double complex' types.
gdb/ChangeLog:
* f-exp.y (COMPLEX_KEYWORD, SINGLE, DOUBLE, PRECISION): New
tokens.
(typebase): New patterns for complex, single/double precision, and
single/double complex.
(f77_keywords): Change token for complex keyword, and add single,
double, and precision keywords.
gdb/testsuite/ChangeLog:
* gdb.fortran/type-kinds.exp (test_cast_1_to_type_kind): Handle
casting to type with no kind specified.
(test_basic_parsing_of_type_kinds): Additional tests for types
with no kind specified, and add tests for single/double
precision/complex types.
Change-Id: I9c82f4d392c58607747bd08862c1ee330723a1ba
Simon Marchi [Wed, 4 Dec 2019 18:35:46 +0000 (13:35 -0500)]
Fix doc of AVR-specific command "info io_registers"
Running the selftests on an all-targets build, I get:
Running selftest help_doc_invariants.
help doc broken invariant: command 'info io_registers' help doc first line is not terminated with a '.' character
Self test failed: self-test failed at /home/simark/src/binutils-gdb/gdb/unittests/help-doc-selftests.c:95
Add a period at the end of the doc of that command, and make it a bit
nicer in general.
gdb/ChangeLog:
* avr-tdep.c (_initialize_avr_tdep): Improve help of command
"info io_registers".
Simon Marchi [Wed, 4 Dec 2019 18:35:32 +0000 (13:35 -0500)]
Fix regcache::cooked_read_test selftest for mep
When running the regcache::cooked_read_test selftest in an all targets
build, I get the following internal error:
/home/simark/src/binutils-gdb/gdb/thread.c:95: internal-error: thread_info* inferior_thread(): Assertion `tp' failed.
The stack trace is the followiing:
#9 0x000055fe25584a52 in internal_error (file=0x55fe27a25fe0 "/home/simark/src/binutils-gdb/gdb/thread.c", line=95, fmt=0x55fe27a25c80 "%s: Assertion `%s' failed.")
at /home/simark/src/binutils-gdb/gdb/gdbsupport/errors.c:55
#10 0x000055fe260674bc in inferior_thread () at /home/simark/src/binutils-gdb/gdb/thread.c:95
#11 0x000055fe25c62f0f in get_current_regcache () at /home/simark/src/binutils-gdb/gdb/regcache.c:372
#12 0x000055fe2594fcf1 in current_options () at /home/simark/src/binutils-gdb/gdb/mep-tdep.c:873
#13 0x000055fe2594ff08 in mep_register_name (gdbarch=0x62100056f510, regnr=152) at /home/simark/src/binutils-gdb/gdb/mep-tdep.c:958
#14 0x000055fe25950112 in mep_register_reggroup_p (gdbarch=0x62100056f510, regnum=152, group=0x55fe2924d540 <save_group>) at /home/simark/src/binutils-gdb/gdb/mep-tdep.c:1029
#15 0x000055fe2555ad87 in gdbarch_register_reggroup_p (gdbarch=0x62100056f510, regnum=152, reggroup=0x55fe2924d540 <save_group>) at /home/simark/src/binutils-gdb/gdb/gdbarch.c:3622
#16 0x000055fe25c61d45 in reg_buffer::save(gdb::function_view<register_status (int, unsigned char*)>) (this=0x7ffc61a0ed90, cooked_read=...)
at /home/simark/src/binutils-gdb/gdb/regcache.c:247
#17 0x000055fe2552ac60 in readonly_detached_regcache::readonly_detached_regcache(gdbarch*, gdb::function_view<register_status (int, unsigned char*)>) (this=0x7ffc61a0ed90,
gdbarch=0x62100056f510, cooked_read=...) at /home/simark/src/binutils-gdb/gdb/regcache.h:444
#18 0x000055fe25c61867 in readonly_detached_regcache::readonly_detached_regcache (this=0x7ffc61a0ed90, src=...) at /home/simark/src/binutils-gdb/gdb/regcache.c:212
#19 0x000055fe25c6a5ca in selftests::cooked_read_test (gdbarch=0x62100056f510) at /home/simark/src/binutils-gdb/gdb/regcache.c:1613
The problems is that mep's code ends up calling inferior_thread, which
calls find_thread_ptid. find_thread_ptid searches for a thread by ptid
in the thread list of the inferior that is expected to contain that
thread.
However, the thread list of the mock inferior set up in cooked_read_test
is never initialized. So find_thread_ptid doesn't find the thread,
which is an unexpected situation for inferior_thread.
This is failing since this commit:
080363310650c93ad8e93018bcb6760ba5d32d1c
Per-inferior thread list, thread ranges/iterators, down with ALL_THREADS, etc.
Fix it by putting the mock thread in the thread list of the mock
inferior in cooked_read_test.
gdb/ChangeLog:
* regcache.c (cooked_read_test): Initialize thread list of
mock_inferior.
Simon Marchi [Wed, 4 Dec 2019 18:33:02 +0000 (13:33 -0500)]
Remove unused includes in aarch64-linux-tdep.c
include-what-you-use reports:
../../../src/binutils-gdb/gdb/aarch64-linux-tdep.c should remove these lines:
- #include "arch-utils.h" // lines 24-24
- #include "auxv.h" // lines 48-48
- #include "cli/cli-utils.h" // lines 39-39
- #include "elf/common.h" // lines 49-49
- #include "inferior.h" // lines 35-35
Add an include for "target/target.h", otherwise target_read_memory isn't
found.
gdb/ChangeLog:
* aarch64-linux-tdep.c: Remove includes.
Simon Marchi [Wed, 4 Dec 2019 18:32:33 +0000 (13:32 -0500)]
Remove unused includes in aarch64-tdep.c
include-what-you-use reports:
../../../src/binutils-gdb/gdb/aarch64-tdep.c should remove these lines:
- #include "ax.h" // lines 45-45
- #include "elf-bfd.h" // lines 52-52
- #include "elf/aarch64.h" // lines 53-53
- #include "infcall.h" // lines 44-44
- #include "inferior.h" // lines 24-24
- #include "language.h" // lines 43-43
gdb/ChangeLog:
* aarch64-tdep.c: Remove includes.
Simon Marchi [Wed, 4 Dec 2019 18:27:21 +0000 (13:27 -0500)]
Compare iterators, not values, in filtered_iterator::operator{==,!=}
The == and != operators on filtered_iterator are not doing the
right thing, they compare values pointed by the wrapped iterators
instead of comparing the iterators themselves.
As a result, operator== will return true if the two iterators point to
two equal values at different positions. operator!= will fail
similarly.
Also, this causes it to deference past-the-end iterators when doing.
For example, in
for (iter = ...; iter != end_iter; ++iter)
the != comparison dereferences end_iter. I don't think this should
happen.
I don't think it's a problem today, given that we only use
filtered_iterator to wrap linked lists of threads and inferiors.
Dereferencing past-the-end iterators of these types is not fatal, it
just returns NULL, which is not a value we otherwise find in the lists.
But in other contexts, it could become problematic.
I have added a simple self test that fails without the fix applied.
gdb/ChangeLog:
* filtered-iterator.h (filtered_iterator) <operator==,
operator!=>: Compare wrapped iterators, not wrapped pointers.
* Makefile.in (SUBDIR_UNITTESTS_SRCS): Add
unittests/filtered_iterator-selftests.c.
* unittests/filtered_iterator-selftests.c: New file.
Pavel I. Kryukov [Sat, 30 Nov 2019 22:40:21 +0000 (01:40 +0300)]
sim-utils.c: prevent buffer overflow.
Representation of max 32-bit integer is 10 chars.
The potential issue is observed by GCC 7 targeted to AArch64.
sim/common/ChangeLog:
2019-12-01 Pavel I. Kryukov <kryukov@frtk.ru>
* sim-utils.c: Prevent buffer overflow.
Tom Tromey [Mon, 25 Nov 2019 20:37:15 +0000 (13:37 -0700)]
Add bit-field test for scalar_storage_order
This adds a bit-field test for scalar_storage_order.
gdb/testsuite/ChangeLog
2019-12-04 Tom Tromey <tromey@adacore.com>
* gdb.base/endianity.c (struct other) <x>: New field.
(main): Initialize it.
* gdb.base/endianity.exp: Update.
Change-Id: I9e07d1b3e08e7c3384832b68ef286afe1d11479a
Tom Tromey [Mon, 25 Nov 2019 20:04:52 +0000 (13:04 -0700)]
Propagate endianity to subrange types
A subrange type should inherit its endianity from its base type.
gdb/ChangeLog
2019-12-04 Tom Tromey <tromey@adacore.com>
* gdbtypes.c (create_range_type): Inherit endianity
from base type.
gdb/testsuite/ChangeLog
2019-12-04 Tom Tromey <tromey@adacore.com>
* gdb.ada/scalar_storage/storage.adb: New file.
* gdb.ada/scalar_storage/pck.adb: New file.
* gdb.ada/scalar_storage/pck.ads: New file.
* gdb.ada/scalar_storage.exp: New file.
Change-Id: I2998ab919dc28aeff097763c4242f9bfb90823a3
Tom Tromey [Mon, 25 Nov 2019 19:31:02 +0000 (12:31 -0700)]
Remove gdbarch_bits_big_endian
From what I can tell, set_gdbarch_bits_big_endian has never been used.
That is, all architectures since its introduction have simply used the
default, which is simply check the architecture's byte-endianness.
Because this interferes with the scalar_storage_order code, this patch
removes this gdbarch setting entirely. In some places,
type_byte_order is used rather than the plain gdbarch.
gdb/ChangeLog
2019-12-04 Tom Tromey <tromey@adacore.com>
* ada-lang.c (decode_constrained_packed_array)
(ada_value_assign, value_assign_to_component): Update.
* dwarf2loc.c (rw_pieced_value, access_memory)
(dwarf2_compile_expr_to_ax): Update.
* dwarf2read.c (dwarf2_add_field): Update.
* eval.c (evaluate_subexp_standard): Update.
* gdbarch.c, gdbarch.h: Rebuild.
* gdbarch.sh (bits_big_endian): Remove.
* gdbtypes.h (union field_location): Update comment.
* target-descriptions.c (make_gdb_type): Update.
* valarith.c (value_bit_index): Update.
* value.c (struct value) <bitpos>: Update comment.
(unpack_bits_as_long, modify_field): Update.
* value.h (value_bitpos): Update comment.
Change-Id: I379b5e0c408ec8742f7a6c6b721108e73ed1b018
Tom Tromey [Mon, 25 Nov 2019 18:14:50 +0000 (11:14 -0700)]
Move type_byte_order earlier
I failed to notice that the scalar_storage_order patch put
type_byte_order at the end of gdbtypes.c. The end of the file is
normally where the file's _initialize function goes. This moves
type_byte_order earlier, into a more relevant section.
gdb/ChangeLog
2019-12-04 Tom Tromey <tromey@adacore.com>
* gdbtypes.c (type_byte_order): Move earlier. Assert for unknown
endian-ness.
Change-Id: I4666431ecbb32ec98918f39f72d22c86b2bc8dde
Tom Tromey [Mon, 25 Nov 2019 18:13:52 +0000 (11:13 -0700)]
Add scalar_storage_order support for floating point
Testing the scalar_storage_order patch pointed out that it does not
handle floating point properly. This patch fixes this problem.
gdb/ChangeLog
2019-12-04 Tom Tromey <tromey@adacore.com>
* dwarf2read.c (dwarf2_init_float_type)
(dwarf2_init_complex_target_type): Add byte_order parameter.
(read_base_type): Compute byte order earlier.
* gdbtypes.c (init_float_type): Add byte_order parameter.
* gdbtypes.h (init_float_type): Add byte_order parameter.
gdb/testsuite/ChangeLog
2019-12-04 Tom Tromey <tromey@adacore.com>
* gdb.base/endianity.c (struct otherendian) <f>: New field.
(main): Initialize it.
* gdb.base/endianity.exp: Update.
Change-Id: Ic02eb711d80ce678ef0ecf8c506a626e441b8440
Tom Tromey [Wed, 4 Dec 2019 15:08:13 +0000 (08:08 -0700)]
Fix another build failure in tui-selftests.c
Christian had emailed me to say that the TUI unit test broke the mingw
build, but I erroneously thought this was fixed by the earlier patch
that made the test body conditional on the TUI being built.
However, I was wrong about this -- tui-selftests.c unconditionally
includes tui-winsource.h, which fails if curses is not available.
This patch fixes the build problem by moving this include into the
"#ifdef TUI" section.
Tested by rebuilding a mingw-hosted gdb.
gdb/ChangeLog
2019-12-04 Tom Tromey <tromey@adacore.com>
* unittests/tui-selftests.c: Conditionally include tui-winsource.h.
Change-Id: If608649ef5cbef8ea92192e11c53379742967ee7
Tom Tromey [Wed, 4 Dec 2019 14:46:59 +0000 (07:46 -0700)]
Silence maybe-uninitialized warning in dwarf2read.c
I upgraded to Fedora 30 recently. It includes GCC 9, which gives a
warning for dwarf2read.c:
../../binutils-gdb/gdb/dwarf2read.c:16103:24: warning: ‘discr_offset’ may be used uninitialized in this function [-Wmaybe-uninitialized]
This patch fixes the problem by initializing discr_offset.
Tested by rebuilding.
gdb/ChangeLog
2019-12-04 Tom Tromey <tromey@adacore.com>
* dwarf2read.c (process_structure_scope): Initialize
"discr_offset".
Change-Id: I76a6157921c9beacb641b8a41e10026006621b95
Andrew Burgess [Mon, 14 Oct 2019 23:02:51 +0000 (00:02 +0100)]
gdb/mi: Add -max-results parameter to some -symbol-info-* commands
Adds a new parameter -max-results to -symbol-info-functions,
-symbol-info-variables, -symbol-info-types, and -symbol-info-modules.
This parameter limits the number of results returned.
This change still leaves -symbol-info-module-functions and
-symbol-info-module-variables always returning all results, fixing
these commands is slightly harder.
There's currently no mechanism for the user of these commands to know
if the result list has been truncated if you get back the maximum
number of results, so if there are exactly 10 functions and you call
'-symbol-info-functions --max-results 10' the reply would appear no
different than if you had 20 functions and called with a max of 10.
Right now, if you get back the maximum then you should assume that
there might be more results available.
One other thing to note is that the global_symbol_searcher::search by
default returns SIZE_MAX results, there's no longer a mechanism to
return an unlimited number of results, though hopefully this will not
be a huge issue.
gdb/ChangeLog:
* mi/mi-symbol-cmds.c (mi_symbol_info): Take extra parameter, and
add it into the search spec.
(parse_max_results_option): New function.
(mi_info_functions_or_variables): Parse -max-results flag and pass
it to mi_symbol_info.
(mi_cmd_symbol_info_modules): Likewise.
(mi_cmd_symbol_info_types): Likewise.
* symtab.c (global_symbol_searcher::add_matching_symbols): Change
return type to bool, change result container into a set, and don't
add new results if we have enough already.
(global_symbol_searcher::add_matching_msymbols): Change return
type to bool, and don't add new results if we have enough already.
(sort_search_symbols_remove_dups): Delete.
(global_symbol_searcher::search): Early exit from search loop when
we have enough results. Use a std::set to collect the results
from calling add_matching_symbols.
* symtab.h (global_symbol_searcher) <set_max_seach_results>: New
member function.
(global_symbol_searcher) <m_max_search_results>: New member
variable.
(global_symbol_searcher) <add_matching_symbols>: Update header
comment and change return type to bool.
(global_symbol_searcher) <add_matching_msymbols>: Update header
comment and change return type to bool.
gdb/doc/ChangeLog:
* doc/gdb.texinfo (GDB/MI Symbol Query): Add documentation of
-max-results to some -symbol-info-* commands.
gdb/testsuite/ChangeLog:
* gdb.mi/mi-sym-info.exp: Add tests for -max-results parameter.
Change-Id: I90a28feb55b388fb46461a096c5db08b6b0bd427
Andrew Burgess [Mon, 2 Dec 2019 11:36:45 +0000 (11:36 +0000)]
gdb: Split global symbol search into separate functions
In preparation for the next commit, this commit restructures the code
by splitting global_symbol_searcher::search into separate functions.
There should be no functional changes after this commit.
gdb/ChangeLog:
* symtab.c (symbol_search::compare_search_syms): Update header
comment.
(global_symbol_searcher::is_suitable_msymbol): New function.
(global_symbol_searcher::expand_symtabs): New function.
(global_symbol_searcher::add_matching_symbols): New function.
(global_symbol_searcher::add_matching_msymbols): New function.
(global_symbol_searcher::search): Move most of the content
into the new functions above, and call them as needed.
* symtab.h (global_symbol_searcher) <expand_symtabs>: New member
function.
(global_symbol_searcher) <add_matching_symbols>: New member
function.
(global_symbol_searcher) <add_matching_msymbols>: New member
function.
(global_symbol_searcher) <is_suitable_msymbol>: New member
function.
Change-Id: I06b26920f35c268f7a38d8203dc2c2813aa501c6
Andrew Burgess [Fri, 4 Oct 2019 16:59:51 +0000 (17:59 +0100)]
gdb/mi: Add -symbol-info-module-{variables,functions}
Two new MI command -symbol-info-module-variables and
-symbol-info-module-functions, which are the equivalent of the CLI
command 'info module variables' and 'info module functions'. These
return information about functions and variables within Fortran
modules.
gdb/ChangeLog:
* mi/mi-cmds.c (mi_cmds): Add -symbol-info-module-functions and
-symbol-info-module-variables entries.
* mi/mi-cmds.h (mi_cmd_symbol_info_module_functions): Declare.
(mi_cmd_symbol_info_module_variables): Declare.
* mi/mi-symbol-cmds.c
(module_symbol_search_iterator): New typedef.
(output_module_symbols_in_single_module_and_file): New function.
(output_module_symbols_in_single_module): New function.
(mi_info_module_functions_or_variables): New function.
(mi_cmd_symbol_info_module_functions): New function.
(mi_cmd_symbol_info_module_variables): New function.
* NEWS: Mention new MI command.
gdb/doc/ChangeLog:
* doc/gdb.texinfo (GDB/MI Symbol Query): Document new MI command
-symbol-info-module-functions and -symbol-info-module-variables.
gdb/testsuite/ChangeLog:
* gdb.mi/mi-fortran-modules.exp: Add additional tests for
-symbol-info-module-functions and -symbol-info-module-variables.
Change-Id: Ic96f12dd14bd7e34774c3cde008fec30a4055bfe
Jan Beulich [Wed, 4 Dec 2019 09:45:17 +0000 (10:45 +0100)]
x86-64: accept 64-bit LFS/LGS/LSS forms with suffix or operand size specifier
Since we accept these without suffix / operand size specifier, we should
also do so with one. (The fact that we unilaterally accept these, other
than far branches, rather than limiting them to Intel64 mode, will be
taken care of later on.)
Also take the opportunity and make sure "lfs <reg>, tbyte ptr <mem>"
et al get rejected outside of 64-bit mode. This became broken by
dc2be329b950 ("i386: Only check suffix in instruction mnemonic").
Furthermore cover lgdt et al in the Intel syntax handling as well, which
continued to work after said commit just by coincidence.
Jan Beulich [Wed, 4 Dec 2019 09:44:27 +0000 (10:44 +0100)]
x86-64/Intel: fix CALL/JMP with dword operand
While
dc2be329b950 ("i386: Only check suffix in instruction mnemonic")
has made the assembler accept these in the first place (they were wrongly
rejected before), the generated code was still wrong in that it lacked
an operand size override. (In 64-bit code, other than in 16- and 32-bit
ones, CALL and JMP with memory operands are all entirely unambiguous: No
operand size can have two meanings.)
Jan Beulich [Wed, 4 Dec 2019 09:43:50 +0000 (10:43 +0100)]
x86: consolidate tracking of MMX register use
Just like for XMM/YMM/ZMM don't key this to any Cpu* flags. Instead
include the two special insns (not having register operands) explicitly.
Jan Beulich [Wed, 4 Dec 2019 09:41:43 +0000 (10:41 +0100)]
x86/Intel: extend MOVDIRI testing
Test also memory operands with operand size specifier, which was broken
prior to
dc2be329b950 ("i386: Only check suffix in instruction
mnemonic"), due to the template not permitting any suffixes. Note that
this uncovered a disassembler issue, which is being fixed here as well.
Jan Beulich [Wed, 4 Dec 2019 09:40:40 +0000 (10:40 +0100)]
x86: make sure all PUSH/POP honor DefaultSize
While segment registers are registers, their use doesn't allow sizing
of insns without suffix / explicit operand size specifier. Prevent
PUSH and POP of segment registers from entering that path, instead
allowing them to observe the stackop_size setting just like other
PUSH/POP and alike do.
Jan Beulich [Wed, 4 Dec 2019 09:40:02 +0000 (10:40 +0100)]
x86: drop some stray/bogus DefaultSize
Insns permitting only GPR operands (and hence implicit sizing when
there's no suffix) don't ever have their DefaultSize attribute
inspected, so it shouldn't be there in the first place.
Additionally XBEGIN is like JMP, not CALL, and hence shouldn't be
converted to 32-bit operand size in .code16gcc mode. While the same is
true for SYSRET, it permitting more than one suffix makes it FLDENV-
like, and hence rather than dropping the attribute, for now add it to
the exclusion list to avoid it getting an operand size prefix emitted
in .code16gcc mode. (This will be dealt with later, perhaps together
with FLDENV and friends.)
GDB Administrator [Wed, 4 Dec 2019 00:00:50 +0000 (00:00 +0000)]
Automatic date update in version.in
Christian Biesinger [Tue, 3 Dec 2019 00:58:35 +0000 (18:58 -0600)]
Replace hash function from bcache with fast_hash
This function is not just slower than xxhash, it is slower than
even libiberty's iterative_hash, so there does not seem to be
a reason for it to exist.
------------------------------------------------------------
Benchmark Time CPU Iterations
------------------------------------------------------------
BM_xxh3 11 ns 11 ns
66127192
BM_xxh32 19 ns 19 ns
36792609
BM_xxh64 16 ns 16 ns
42941328
BM_city32 26 ns 26 ns
27028370
BM_city64 17 ns 17 ns
40472793
BM_iterative_hash 77 ns 77 ns
9088854
BM_bcache_hash 125 ns 125 ns
5599232
gdb/ChangeLog:
2019-12-03 Christian Biesinger <cbiesinger@google.com>
* bcache.c (hash): Remove.
(hash_continue): Remove.
* bcache.h (hash): Remove.
(hash_continue): Remove.
(struct bcache) <ctor>: Update.
* psymtab.c (psymbol_hash): Update.
* stabsread.c (hashname): Update.
* utils.h (fast_hash): Add an argument for a start value,
defaulting to zero.
Change-Id: I107f013eda5fdd3293326b5a206be43155dae0f8
Philippe Waroquiers [Sun, 1 Dec 2019 16:24:41 +0000 (17:24 +0100)]
Fix leak of symbol name in block_symbol_cache
A symbol not found inserted in the cache has a xstrdup-ed name
that must be freed, but only the struct block_symbol_cache is freed.
Add a function destroy_block_symbol_cache that clears all slots
before releasing the cache.
2019-12-03 Philippe Waroquiers <philippe.waroquiers@skynet.be>
* symtab.c (symbol_cache_clear_slot): Move close to cleared type.
(destroy_block_symbol_cache): New function.
(symbol_cache:~symbol_cache) Call destroy_block_symbol_cache.
(resize_symbol_cache): Likewise.
Alan Modra [Mon, 2 Dec 2019 13:07:34 +0000 (23:37 +1030)]
PR25230, addr2line fails on dwz output
This patch remedies the following DW_FORM_GNU_ref_alt related problem:
/* FIXME: Do we need to locate the correct CU, in a similar
fashion to the code in the DW_FORM_ref_addr case above ? */
Without the correct CU the wrong abbrevs are used, resulting in
errors and/or wrong file names.
There is scope for further work here. Parsing of CUs should be a two
step process, with the first stage just finding the bounds of the CU.
This would allow find_abstract_instance to quickly find the CU
referenced by DW_FORM_ref_addr or DW_FORM_GNU_ref_alt, then take the
second stage of CU parsing where abbrevs, ranges and suchlike consume
time and memory. As it is, we just process CUs from the start of
.debug_info until we find the one of interest. The testcase in the PR
takes 98G of virtual memory.
PR 25230
* dwarf2.c (struct dwarf2_debug_file): Add line_table and
abbrev_offsets.
(struct abbrev_offset_entry): New.
(hash_abbrev, eq_abbrev, del_abbrev): New functions.
(read_abbrevs): Check whether we have already read abbrevs at
given offset, and add new offset/abbrev to hash table.
(decode_line_info): Keep line table at offset zero in file struct.
Return this for a cu reusing the same dir/file list.
(find_abstract_instance): Find cu for DW_FORM_GNU_ref_alt.
(_bfd_dwarf2_slurp_debug_info): Create offset/abbrev hash tables.
(_bfd_dwarf2_cleanup_debug_info): Adjust deletion of lines and
abbrevs.
Alan Modra [Sat, 30 Nov 2019 06:27:55 +0000 (16:57 +1030)]
PR25230, dwarf2.c per file stash
This is just moving things around, in preparation for parsing alt
file debug_info.
PR 25230
* dwarf2.c (struct dwarf2_debug_file): New struct.
(struct dwarf2_debug): Delete fields now in dwarf2_debug_file.
Add f, alt fields.
(struct comp_unit): Add file field.
(read_indirect_string, read_indirect_line_string): Adjust to suit.
(read_alt_indirect_string, read_alt_indirect_ref): Likewise.
(read_debug_ranges, find_abstract_instance, read_rangelist): Likewise.
(_bfd_dwarf2_stash_syms, place_sections): Likewise.
(stash_maybe_update_info_hash_tablse): Likewise.
(stash_verify_info_hash_table): Likewise.
(_bfd_dwarf2_slurp_debug_info): Likewise.
(_bfd_dwarf2_find_symbol_bias): Likewise.
(_bfd_dwarf2_find_nearest_line): Likewise.
(_bfd_dwarf2_cleanup_debug_info): Likewise.
(read_abbrevs): Add file param and adjust. Update calls.
(stash_comp_unit): Likewise.
(decode_line_info): Delete stash param and adjust. Update calls.
(comp_unit_find_nearest_line): Likewise.
(comp_unit_maybe_decode_line_info): Likewise.
(comp_unit_find_line): Likewise.
(parse_comp_unit): Add file and info_ptr param and adjust. Update
calls.
Alan Modra [Fri, 29 Nov 2019 22:42:29 +0000 (09:12 +1030)]
dwarf2.c: read_abbrevs fail cleanup, and offset checking
read_section does offset checking, reporting an error on out of
bounds. There's no need to duplicate the check in functions calling
read_section. Also, I spotted a place where a pointer difference
expression was being cast to unsigned int, possibly truncating
relevant bits on a 64-bit host.
* dwarf2.c (read_indirect_string): Don't duplicate offset check
done in read_section.
(read_indirect_line_string): Likewise.
(read_alt_indirect_string): Likewise.
(read_alt_indirect_ref): Likewise.
(read_abbrevs): Likewise. Free memory on all failure paths.
Use correct unsigned type for pointer difference comparison.
Alan Modra [Tue, 3 Dec 2019 03:00:33 +0000 (13:30 +1030)]
dwarf2.c stash->sec_info_ptr and stash->sec
These are unused. Remove them. Also fix the wrong sort of 0 being
returned from read_alt_indirect_ref.
* dwarf2.c (struct dwarf2_debug): Update comments. Remove sec
and sec_info_ptr.
(_bfd_dwarf2_slurp_debug_info): Don't set sec or sec_info_ptr.
(stash_comp_unit): Likewise.
(read_alt_indirect_ref): Return NULL not FALSE.
Alan Modra [Sat, 30 Nov 2019 07:38:09 +0000 (18:08 +1030)]
_bfd_dwarf2_find_nearest_line comment fix
These lines should have been removed along with the addr_size parameter.
* dwarf2.c (_bfd_dwarf2_find_nearest_line): Correct function comment.
GDB Administrator [Tue, 3 Dec 2019 00:00:26 +0000 (00:00 +0000)]
Automatic date update in version.in
Tom Tromey [Mon, 2 Dec 2019 23:12:19 +0000 (16:12 -0700)]
Fix build breakage with --disable-tui
An earlier patch introduced a unit test for tui_copy_source_line.
However if the TUI is not built (as is apparently the case on some of
the buildbot builders), then this will fail to link.
This patch fixes the problem. Tested by rebuilding with the TUI
disabled.
gdb/ChangeLog
2019-12-02 Tom Tromey <tom@tromey.com>
* unittests/tui-selftests.c (run_tests): Make conditional.
(_initialize_tui_selftest): Make conditional.
Change-Id: I964811c7635be24cf6c53920e74e920914503674
Christian Biesinger [Mon, 2 Dec 2019 18:33:38 +0000 (12:33 -0600)]
Change type of debug_aix_thread to bool
This fixes AIX build breakage from commit
491144b5e21bbfd41969c175aebb663976f59058
Thanks to Sangamesh Mallayya for pointing this out to me.
gdb/ChangeLog:
2019-12-02 Christian Biesinger <cbiesinger@google.com>
* aix-thread.c (debug_aix_thread): Change type to bool.
Change-Id: Ie7b2eab97b75b48067ef77e414e7510d1f79a525
Luis Machado [Wed, 27 Nov 2019 20:25:05 +0000 (17:25 -0300)]
Remove stale FIXME comment
While debugging something, i noticed this odd FIXME comment. It seems stale
and therefore here's a patch removing it.
gdb/ChangeLog:
2019-12-02 Luis Machado <luis.machado@linaro.org>
* infrun.c (follow_fork_inferior): Remove outdated FIXME comment.
Change-Id: I2436ca4ae4a6741012cafe8123325f738b692c9c
GDB Administrator [Mon, 2 Dec 2019 00:00:21 +0000 (00:00 +0000)]
Automatic date update in version.in
Andrew Burgess [Fri, 29 Nov 2019 00:14:35 +0000 (00:14 +0000)]
gdb: Dynamic string length support
Add support for strings with dynamic length using the DWARF attribute
DW_AT_string_length.
Currently gFortran generates DWARF for some strings that make use of
DW_AT_string_length like this:
<1><2cc>: Abbrev Number: 20 (DW_TAG_string_type)
<2cd> DW_AT_string_length: 5 byte block: 99 bd 1 0 0 (DW_OP_call4: <0x1bd>)
<2d3> DW_AT_byte_size : 4
<2d4> DW_AT_sibling : <0x2e2>
In this type entry the DW_AT_string_length attribute references a
second DW_TAG_formal_parameter that contains the string length. The
DW_AT_byte_size indicates that the length is a 4-byte value.
This commit extends GDB's DWARF parsing for strings so that we can
create dynamic types as well as static types, based on the attribute
the DWARF contains.
I then extend the dynamic type resolution code in gdbtypes.c to add
support for resolving dynamic strings.
gdb/ChangeLog:
* dwarf2read.c (read_tag_string_type): Read the fields required to
make a dynamic string, and possibly create a dynamic range for the
string.
(attr_to_dynamic_prop): Setup is_reference based on the type of
attribute being processed.
* gdbtypes.c (is_dynamic_type_internal): Handle TYPE_CODE_STRING.
(resolve_dynamic_array): Rename to...
(resolve_dynamic_array_or_string): ...this, update header comment,
and accept TYPE_CODE_STRING.
(resolve_dynamic_type_internal): Handle TYPE_CODE_STRING.
gdb/testsuite/ChangeLog:
* gdb.fortran/array-slices.exp: Add test for dynamic strings.
Change-Id: I03f2d181b26156f48f27a03c8a59f9bd4d71ac17
Andrew Burgess [Fri, 29 Nov 2019 00:13:19 +0000 (00:13 +0000)]
gdb/dwarf: Introduce dwarf2_per_cu_int_type function
This is a minor refactor in preparation for the next commit. Splits
the core of dwarf2_per_cu_addr_sized_int_type out into a separate
function. There should be no user visible changes after this commit.
gdb/ChangeLog:
* dwarf2read.c (dwarf2_per_cu_int_type): New function, takes most
of its implementation from...
(dwarf2_per_cu_addr_sized_int_type): ...here, which now just calls
the new function.
Change-Id: I8b849dd338012ec033b3f0a57d65cec0d7a3bd97
Andrew Burgess [Thu, 24 Oct 2019 10:12:11 +0000 (11:12 +0100)]
gdb/fortran: array stride support
Currently GDB supports a byte or bit stride on arrays, in DWARF this
would be DW_AT_bit_stride or DW_AT_byte_stride on DW_TAG_array_type.
However, DWARF can also support DW_AT_byte_stride or DW_AT_bit_stride
on DW_TAG_subrange_type, the tag used to describe each dimension of an
array.
Strides on subranges are used by gFortran to represent Fortran arrays,
and this commit adds support for this to GDB.
I've extended the range_bounds struct to include the stride
information. The name is possibly a little inaccurate now, but this
still sort of makes sense, the structure represents information about
the bounds of the range, and also how to move from the lower to the
upper bound (the stride).
I've added initial support for bit strides, but I've never actually
seen an example of this being generated. Further, I don't really see
right now how GDB would currently handle a bit stride that was not a
multiple of the byte size as the code in, for example,
valarith.c:value_subscripted_rvalue seems geared around byte
addressing. As a consequence if we see a bit stride that is not a
multiple of 8 then GDB will give an error.
gdb/ChangeLog:
* dwarf2read.c (read_subrange_type): Read bit and byte stride and
create a range with stride where appropriate.
* f-valprint.c: Include 'gdbarch.h'.
(f77_print_array_1): Take the stride into account when walking the
array. Also convert the stride into addressable units.
* gdbtypes.c (create_range_type): Initialise the stride to
constant zero.
(create_range_type_with_stride): New function, initialise the
range as normal, and then setup the stride.
(has_static_range): Include the stride here. Also change the
return type to bool.
(create_array_type_with_stride): Consider the range stride if the
array isn't given its own stride.
(resolve_dynamic_range): Resolve the stride if needed.
* gdbtypes.h (struct range_bounds) <stride>: New member variable.
(struct range_bounds) <flag_is_byte_stride>: New member variable.
(TYPE_BIT_STRIDE): Define.
(TYPE_ARRAY_BIT_STRIDE): Define.
(create_range_type_with_stride): Declare.
* valarith.c (value_subscripted_rvalue): Take range stride into
account when walking the array.
gdb/testsuite/ChangeLog:
* gdb.fortran/derived-type-striding.exp: New file.
* gdb.fortran/derived-type-striding.f90: New file.
* gdb.fortran/array-slices.exp: New file.
* gdb.fortran/array-slices.f90: New file.
Change-Id: I9af2bcd1f2d4c56f76f5f3f9f89d8f06bef10d9a
Tom Tromey [Wed, 20 Nov 2019 23:02:29 +0000 (16:02 -0700)]
Treat inactive TUI specially in "info win"
I noticed that "info win" will print the table header, but no windows,
when the TUI is inactive. This patch changes this to print a message
instead.
gdb/ChangeLog
2019-12-01 Tom Tromey <tom@tromey.com>
* tui/tui-win.c (tui_all_windows_info): Treat inactive TUI
specially.
Change-Id: Ia860be8c786a71289da6609aa14d86b8365424db
Tom Tromey [Sun, 17 Nov 2019 22:50:31 +0000 (15:50 -0700)]
Fix latent bug in tui_copy_source_line
tui_copy_source_line has a bug, where it can advance past the
terminating \0 in its input string. This patch fixes the bug and adds
a test case for this function.
gdb/ChangeLog
2019-12-01 Tom Tromey <tom@tromey.com>
* tui/tui-winsource.c (tui_copy_source_line): Don't advance past
\0.
* unittests/tui-selftests.c: New file.
* Makefile.in (SUBDIR_UNITTESTS_SRCS): Add tui-selftests.c.
Change-Id: I46cdabe6e57549983149b8f640cda5edd16fa260
Tom Tromey [Sun, 10 Nov 2019 16:11:42 +0000 (09:11 -0700)]
Re-highlight windows when needed during TUI startup
I noticed that "tui enable" did not correctly show the source window
as having the focus. Debugging showed that the problem was that
tui_update_variables was called after the windows were drawn, and its
result was being ignored. This changed the code to re-highlight the
windows if the value changed.
gdb/ChangeLog
2019-12-01 Tom Tromey <tom@tromey.com>
* tui/tui.c (tui_enable): Call tui_update_variables earlier.
Change-Id: I1a4563fb431833dd3211a224c9e2df3b936fe9ce
Tom Tromey [Sat, 9 Nov 2019 21:13:13 +0000 (14:13 -0700)]
Add TUI border colors
This adds the ability to change the color of the TUI borders, both
ordinary and active. Unlike other styling options, this doesn't allow
setting the intensity, because that is already done by the TUI in a
different way.
gdb/ChangeLog
2019-12-01 Tom Tromey <tom@tromey.com>
* NEWS: Document new settings.
* tui/tui-wingeneral.c (box_win): Apply appropriate border style.
* tui/tui-win.c (_initialize_tui_win): Add border style
observers.
* tui/tui-io.h (tui_apply_style): Declare.
* tui/tui-io.c (tui_apply_style): Rename from apply_style. No
longer static.
(apply_ansi_escape, tui_set_reverse_mode): Update.
* cli/cli-style.h (class cli_style_option) <add_setshow_commands>:
Add "skip_intensity" parameter.
<changed>: New member.
<do_set_value>: Declare.
(tui_border_style, tui_active_border_style): Declare.
* cli/cli-style.c (tui_border_style, tui_active_border_style): New
globals.
(cli_style_option): Initialize "changed".
(cli_style_option::do_set_value): New function.
(cli_style_option::add_setshow_commands): Add "skip_intensity"
parameter. Update.
(STYLE_ADD_SETSHOW_COMMANDS): Add "SKIP" parameter.
(_initialize_cli_style): Update. Create TUI border style
commands.
gdb/doc/ChangeLog
2019-12-01 Tom Tromey <tom@tromey.com>
* gdb.texinfo (TUI Configuration): Mention TUI border styles.
(Output Styling): Document new settings.
Change-Id: Id13e2af0af2a0bde61282752f2c379db3220c9fc
Tom Tromey [Thu, 11 Jul 2019 23:06:00 +0000 (17:06 -0600)]
Allow using less horizontal space in TUI source window
The source window currently uses a field width of 6 for line numbers,
and it further aligns to the next tab stop. This seemed a bit
wasteful of horizontal space to me, so I changed that in an earlier
patch.
However, that change wasn't universally popular. This patch instead
adds the option to use less horizontal space in the TUI source window.
gdb/ChangeLog
2019-12-01 Tom Tromey <tom@tromey.com>
* tui/tui-winsource.h (tui_copy_source_line): Add "ndigits"
parameter.
* tui/tui-winsource.c (tui_copy_source_line): Add "ndigits"
parameter.
* tui/tui-win.h (compact_source): Declare.
* tui/tui-win.c (compact_source): New global.
(tui_set_compact_source, tui_show_compact_source): New functions.
(_initialize_tui_win): Add "compact-source" setting.
* tui/tui-source.c (tui_source_window::set_contents): Handle
compact_source setting.
* tui/tui-disasm.c (tui_disasm_window::set_contents): Update.
* NEWS: Document new setting.
gdb/doc/ChangeLog
2019-12-01 Tom Tromey <tom@tromey.com>
* gdb.texinfo (TUI Configuration): Document new setting.
Change-Id: I46ce9a68b12c9c79332d510f9c14b3c84b7efadd
Tom Tromey [Sat, 30 Nov 2019 17:05:23 +0000 (10:05 -0700)]
Correctly compute length of DW_TAG_variant_part union
Currently, gdb internally transforms DW_TAG_variant_part into a union
(with some special attbributes). When doing so, it computes the
length of this union from the length of the fields. However, this
computation didn't include the offset of these fields, resulting in
the length being too short.
This is not a problem given the way the code currently works.
However, I have a patch series to switch gdb to value-based printing,
where this does have an impact.
Tested on x86-64 Fedora 28; and, considering that this only affects
Rust, I am checking it in.
gdb/ChangeLog
2019-11-30 Tom Tromey <tom@tromey.com>
* dwarf2read.c (dwarf2_add_field): Include field offset when
computing variant part length.
Change-Id: I25d84fc237eb3c1e7f11f6eaf35ffe198efde6cc
GDB Administrator [Sun, 1 Dec 2019 00:01:06 +0000 (00:01 +0000)]
Automatic date update in version.in
Philippe Waroquiers [Sat, 28 Sep 2019 17:30:08 +0000 (19:30 +0200)]
Document define-prefix command and the use of . in command names.
gdb/ChangeLog
2019-11-30 Philippe Waroquiers <philippe.waroquiers@skynet.be>
* NEWS: Mention define-prefix. Tell that command names can now
contain a . character.
gdb/doc/ChangeLog
2019-11-30 Philippe Waroquiers <philippe.waroquiers@skynet.be>
* gdb.texinfo (Define): Indicate that user-defined prefix can
be used in 'define' command. Document 'define-prefix' command.
Philippe Waroquiers [Sun, 8 Sep 2019 19:54:18 +0000 (21:54 +0200)]
Allow . character as part of command names.
This patch adds . as an allowed character for user defined commands.
Combined with 'define-prefix', this allows to e.g. define a set of Valgrind
specific user command corresponding to the Valgrind monitor commands
(such as check_memory, v.info, v.set, ...).
gdb/ChangeLog
2019-11-30 Philippe Waroquiers <philippe.waroquiers@skynet.be>
* command.h (valid_cmd_char_p): Declare.
* cli/cli-decode.c (valid_cmd_char_p): New function factorizing
the check of valid command char.
(find_command_name_length, valid_user_defined_cmd_name_p): Use
valid_cmd_char_p.
* cli/cli-script.c (validate_comname): Likewise.
* completer.c (gdb_completer_command_word_break_characters):
Do not remove . from the word break char, update comments.
(complete_line_internal_1): Use valid_cmd_char_p.
* guile/scm-cmd.c (gdbscm_parse_command_name): Likewise.
* python/py-cmd.c (gdbpy_parse_command_name): Likewise.
gdb/testsuite/ChangeLog
2019-11-30 Philippe Waroquiers <philippe.waroquiers@skynet.be>
* gdb.base/define.exp: Test . in command names.
* gdb.base/setshow.exp: Update test, as . is now part of
command name.
Philippe Waroquiers [Sun, 8 Sep 2019 17:22:35 +0000 (19:22 +0200)]
Test define-prefix.
Adds a test testing the new define-prefix command.
2019-11-30 Philippe Waroquiers <philippe.waroquiers@skynet.be>
* gdb.base/define-prefix.exp: New file.
Philippe Waroquiers [Sun, 8 Sep 2019 13:48:32 +0000 (15:48 +0200)]
Implement user defined prefix.
This patch adds the new 'define-prefix' command that creates (or mark an
existing user defined command) as a prefix command.
This approach was preferred compared to add a -prefix option to
'define' command : with define-prefix, a command can be defined and
afterwards marked as a prefix. Also, it is easier to define a
'prefix' only command in one operation.
This patch also adds completers for the 'define' and 'document' commands.
This makes it easier for the user to type the prefixes for 'define'
and type the documented command name for 'document'.
gdb/ChangeLog
2019-11-30 Philippe Waroquiers <philippe.waroquiers@skynet.be>
* cli/cli-script.c (do_define_command): Ensure a redefined
prefix command is kept as a prefix command.
(define_prefix_command): New function.
(show_user_1): Report user defined prefixes.
(_initialize_cli_script): Create the new 'define-prefix' command.
Add completers for 'define' and 'document'.
* top.c (execute_command): If command is a user-defined prefix only
command, report the list of commands for this prefix command.
GDB Administrator [Sat, 30 Nov 2019 00:00:20 +0000 (00:00 +0000)]
Automatic date update in version.in