Tom de Vries [Sat, 18 Sep 2021 07:25:49 +0000 (09:25 +0200)]
[gdb/ada] Handle artificial local symbols
With current master and gcc 7.5.0/8.5.0, we have this timeout:
...
(gdb) print s^M
Multiple matches for s^M
[0] cancel^M
[1] s at src/gdb/testsuite/gdb.ada/interface/foo.adb:20^M
[2] s at src/gdb/testsuite/gdb.ada/interface/foo.adb:?^M
> FAIL: gdb.ada/interface.exp: print s (timeout)
...
[ The FAIL doesn't reproduce with gcc 9.3.1. This difference in
behaviour bisects to gcc commit
d70ba0c10de.
The FAIL with earlier gcc bisects to gdb commit
ba8694b650b. ]
The FAIL is caused by gcc generating this debug info describing a named
artificial variable:
...
<2><1204>: Abbrev Number: 31 (DW_TAG_variable)
<1205> DW_AT_name : s.14
<1209> DW_AT_type : <0x1213>
<120d> DW_AT_artificial : 1
<120d> DW_AT_location : 5 byte block: 91 e0 7d 23 18 \
(DW_OP_fbreg: -288; DW_OP_plus_uconst: 24)
...
An easy way to fix this would be to simply not put named artificial variables
into the symbol table. However, that causes regressions for Ada. It relies
on being able to get the value from such variables, using a named reference.
Fix this instead by marking the symbol as artificial, and:
- ignoring such symbols in ada_resolve_variable, which fixes the FAIL
- ignoring such ada symbols in do_print_variable_and_value, which prevents
them from showing up in "info locals"
Note that a fix for the latter was submitted here (
https://sourceware.org/pipermail/gdb-patches/2008-January/054994.html ), and
this patch borrows from it.
Tested on x86_64-linux.
Co-Authored-By: Joel Brobecker <brobecker@adacore.com>
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=28180
GDB Administrator [Sat, 18 Sep 2021 00:00:08 +0000 (00:00 +0000)]
Automatic date update in version.in
Alan Modra [Thu, 16 Sep 2021 23:51:21 +0000 (09:21 +0930)]
PR28149 part 2, purge generated line info
Mixing compiler generated line info with gas generated line info is
generally just confusing. Also .loc directives with non-zero view
fields might reference a previous .loc. It becomes a little more
tricky to locate that previous .loc if there might be gas generated
line info present too. Mind you, we turn off gas generation of line
info on seeing compiler generated line info, so any reference back
won't hit gas generated line info. At least, if the view info is
sane. Unfortunately, gas needs to handle mangled source.
PR 28149
* dwarf2dbg.c (purge_generated_debug): New function.
(dwarf2_directive_filename): Call the above.
(out_debug_line): Don't segfault after purging.
* testsuite/gas/i386/dwarf2-line-4.d: Update expected output.
* testsuite/gas/i386/dwarf4-line-1.d: Likewise.
* testsuite/gas/i386/dwarf5-line-1.d: Likewise.
* testsuite/gas/i386/dwarf5-line-2.d: Likewise.
Alan Modra [Thu, 16 Sep 2021 23:38:15 +0000 (09:08 +0930)]
PR28149, debug info with wrong file association
gcc-11 and gcc-12 pass -gdwarf-5 to gas, in order to prime gas for
DWARF 5 level debug info. Unfortunately it seems there are cases
where the compiler does not emit a .file or .loc dwarf debug directive
before any machine instructions. (Note that the .file directive
typically emitted as the first line of assembly output doesn't count as
a dwarf debug directive. The dwarf .file has a file number before the
file name string.)
This patch delays allocation of file numbers for gas generated line
debug info until the end of assembly, thus avoiding any clashes with
compiler generated file numbers. Two fixes for test case source are
necessary; A .loc can't use a file number that hasn't already been
specified with .file.
A followup patch will remove all the gas generated line info on
seeing a .file directive.
PR 28149
* dwarf2dbg.c (num_of_auto_assigned): Delete.
(current): Update initialisation.
(set_or_check_view): Replace all accesses to view with u.view.
(dwarf2_consume_line_info): Likewise.
(dwarf2_directive_loc): Likewise. Assert that we aren't generating
line info.
(dwarf2_gen_line_info_1): Don't call set_or_check_view on
gas generated line entries.
(dwarf2_gen_line_info): Set and track filenames for gas generated
line entries. Simplify generation of labels.
(get_directory_table_entry): Use filename_cmp when comparing dirs.
(do_allocate_filenum): New function.
(dwarf2_where): Set u.filename and filenum to -1 for gas generated
line entries.
(dwarf2_directive_filename): Remove num_of_auto_assigned handling.
(process_entries): Update view field access. Call
do_allocate_filenum.
* dwarf2dbg.h (struct dwarf2_line_info): Add filename field in
union aliasing view.
* testsuite/gas/i386/dwarf2-line-3.s: Add .file directive.
* testsuite/gas/i386/dwarf2-line-4.s: Likewise.
* testsuite/gas/i386/dwarf2-line-4.d: Update expected output.
* testsuite/gas/i386/dwarf4-line-1.d: Likewise.
* testsuite/gas/i386/dwarf5-line-1.d: Likewise.
* testsuite/gas/i386/dwarf5-line-2.d: Likewise.
Alan Modra [Thu, 26 Aug 2021 02:47:51 +0000 (12:17 +0930)]
[GOLD] PowerPC64 support for sym+addend GOT entries
Pass addends to all the GOT handling functions, plus remove some
extraneous asserts.
PR 28192
* powerpc.cc (Output_data_got_powerpc): Add addend parameter to
all methods creating got entries.
(Target_powerpc::Scan::local): Pass reloc addend to got handling
functions, and when creating dynamic got relocations.
(Target_powerpc::Scan::global): Likewise.
(Target_powerpc::Relocate::relocate): Likewise. Remove extraneous
assertions.
Alan Modra [Wed, 25 Aug 2021 12:28:51 +0000 (21:58 +0930)]
[GOLD] Got_entry::write addends
This takes care of writing out GOT entries with addends. The local
symbol case was already largely handled, except for passing the addend
to tls_offset_for_local which might need the addend in a
local_got_offset call. That's needed also in tls_offset_for_global.
I'm assuming here that GOT entries for function symbols won't ever
have addends, and in particular that a GOT entry referencing PLT call
stub code won't want an offset into the code.
PR 28192
* output.cc (Output_data_got::Got_entry::write): Include addend
in global symbol value. Pass addend to tls_offset_for_*.
* powerpc.cc (Target_powerpc::do_tls_offset_for_local): Handle addend.
(Target_powerpc::do_tls_offset_for_global): Likewise.
* s390.cc (Target_s390::do_tls_offset_for_local): Likewise.
(Target_s390::do_tls_offset_for_global): Likewise.
* target.h (Target::tls_offset_for_local): Add addend param.
(Target::tls_offset_for_global): Likewise.
(Target::do_tls_offset_for_local): Likewise.
(Target::do_tls_offset_for_global): Likewise.
Alan Modra [Wed, 25 Aug 2021 10:54:18 +0000 (20:24 +0930)]
[GOLD] Output_data_got create entry method addends
This patch makes all the Output_data_got methods that create new
entries accept an optional addend.
PR 28192
* output.h (Output_data_got::add_global): Add optional addend
parameter. Update comment. Delete overload without addend.
(Output_data_got::add_global_plt): Likewise.
(Output_data_got::add_global_tls): Likewise.
(Output_data_got::add_global_with_rel): Likewise.
(Output_data_got::add_global_pair_with_rel): Likewise.
(Output_data_got::add_local_plt): Likewise.
(Output_data_got::add_local_tls): Likewise.
(Output_data_got::add_local_tls_pair): Likewise.
(Output_data_got::reserve_local): Likewise.
(Output_data_got::reserve_global): Likewise.
(Output_data_got::Got_entry): Include addend in global sym
constructor. Delete local sym constructor without addend.
* output.cc (Output_data_got::add_global): Add addend param,
pass to got handling methods.
(Output_data_got::add_global_plt): Likewise.
(Output_data_got::add_global_with_rel): Likewise.
(Output_data_got::add_global_pair_with_rel): Likewise.
(Output_data_got::add_local_plt): Likewise.
(Output_data_got::add_local_tls_pair): Likewise.
(Output_data_got::reserve_local): Likewise.
(Output_data_got::reserve_global): Likewise.
Alan Modra [Sat, 28 Aug 2021 05:15:53 +0000 (14:45 +0930)]
[GOLD] Output_data_got tidy
Some Output_data_got methods already have support for addends, but
were implemented as separate methods. This removes unnecessary code
duplication.
Relobj::local_has_got_offset and others there get a similar treatment.
Comments are removed since it should be obvious without a comment, and
the existing comments are not precisely what the code does. For
example, a local_has_got_offset call without an addend does not return
whether the local symbol has *a* GOT offset of type GOT_TYPE, it
returns whether there is a GOT entry of type GOT_TYPE for the symbol
with addend of zero.
PR 28192
* output.h (Output_data_got::add_local): Make addend optional.
(Output_data_got::add_local_with_rel): Likewise.
(Output_data_got::add_local_pair_with_rel): Likewise.
* output.cc (Output_data_got::add_local): Delete overload
without addend.
(Output_data_got::add_local_with_rel): Likewise.
(Output_data_got::add_local_pair_with_rel): Likewise.
* object.h (Relobj::local_has_got_offset): Make addend optional.
Delete overload without addend later. Update comment.
(Relobj::local_got_offset): Likewise.
(Relobj::set_local_got_offset): Likewise.
Alan Modra [Sat, 28 Aug 2021 04:53:33 +0000 (14:23 +0930)]
[GOLD] Remove addend from Local_got_entry_key
This patch removes the addend from Local_got_entry_key, which is
unnecessary now that Got_offset_list has an addend. Note that it
might be advantageous to keep the addend in Local_got_entry_key when
linking objects containing a large number of section_sym+addend@got
relocations. I opted to save some memory by removing the field but
left the class there in case we might need to restore {sym,addend}
lookup. That's also why this change is split out from the
Got_offset_list change.
PR 28192
* object.h (Local_got_entry_key): Delete addend_ field.
Adjust constructor and methods to suit.
* object.cc (Sized_relobj::do_for_all_local_got_entries):
Update key.
Alan Modra [Thu, 5 Aug 2021 05:02:56 +0000 (14:32 +0930)]
[GOLD] Got_offset_list: addend field
This is the first in a series of patches aimed at supporting GOT
entries against symbol plus addend generally for PowerPC64 rather than
just section symbol plus addend as gold has currently.
This patch adds an addend field to Got_offset_list, so that both local
and global symbols can have GOT entries with addend.
PR 28192
* object.h (Got_offset_list): Add addend_ field, init in both
constructors. Adjust all accessors to suit.
(Sized_relobj::do_local_has_got_offset): Adjust to suit.
(Sized_relobj::do_local_got_offset): Likewise.
(Sized_relobj::do_set_local_got_offset): Likewise.
* symtab.h (Symbol::has_got_offset): Add optional addend param.
(Symbol::got_offset, Symbol::set_got_offset): Likewise.
* incremental.cc (Local_got_offset_visitor::visit): Add unused
uint64_t parameter with FIXME.
(Global_got_offset_visitor::visit): Add unused uint64_t parameter.
Henry Castro [Sat, 21 Aug 2021 18:14:37 +0000 (14:14 -0400)]
Fix segfault when running ia16-elf-gdb
"A problem internal to GDB has been detected,
further debugging may prove unreliable."
Segmentation fault
Nelson Chu [Thu, 16 Sep 2021 06:36:54 +0000 (14:36 +0800)]
RISC-V: Merged extension string tables and their version tables into one.
There are two main reasons for this patch,
* In the past we had two extension tables, one is used to record all
supported extensions in bfd/elfxx-riscv.c, another is used to get the
default extension versions in gas/config/tc-riscv.c. It is hard to
maintain lots of tables in different files, but in fact we can merge
them into just one table. Therefore, we now define many riscv_supported_std*
tables, which record names and versions for all supported extensions.
We not only use these tables to initialize the riscv_ext_order, but
also use them to get the default versions of extensions, and decide if
the extensions should be enbaled by default.
* We add a new filed `default_enable' for the riscv_supported_std* tables,
to decide if the extension should be enabled by default. For now if the
`default_enable' field of the extension is set to EXT_DEFAULT, then we
should enable the extension when the -march and elf architecture attributes
are not set. In the future, I suppose the `default_enable' can be set
to lots of EXT_<VENDOR>, each vendor can decide to open which extensions,
when the target triple of vendor is chosen.
The elf/linux regression tests of riscv-gnu-toolchain are passed.
bfd/
* elfnn-riscv.c (cpu-riscv.h): Removed sine it is included in
bfd/elfxx-riscv.h.
(riscv_merge_std_ext): Updated since the field of rpe is changed.
* elfxx-riscv.c (cpu-riscv.h): Removed.
(riscv_implicit_subsets): Added implicit extensions for g.
(struct riscv_supported_ext): Used to be riscv_ext_version. Moved
from gas/config/tc-riscv.c, and added new field `default_enable' to
decide if the extension should be enabled by default.
(EXT_DEFAULT): Defined for `default_enable' field.
(riscv_supported_std_ext): It used to return the supported standard
architecture string, but now we move ext_version_table from
gas/config/tc-riscv.c to here, and rename it to riscv_supported_std_ext.
Currently we not only use the table to initialize riscv_ext_order, but
also get the default versions of extensions, and decide if the extensions
should be enbaled by default.
(riscv_supported_std_z_ext): Likewise, but is used for z* extensions.
(riscv_supported_std_s_ext): Likewise, but is used for s* extensions.
(riscv_supported_std_h_ext): Likewise, but is used for h* extensions.
(riscv_supported_std_zxm_ext): Likewise, but is used for zxm* extensions.
(riscv_all_supported_ext): Includes all supported extension tables.
(riscv_known_prefixed_ext): Updated.
(riscv_valid_prefixed_ext): Updated.
(riscv_init_ext_order): Init the riscv_ext_order table according to
riscv_supported_std_ext.
(riscv_get_default_ext_version): Moved from gas/config/tc-riscv.c.
Get the versions of extensions from riscv_supported_std* tables.
(riscv_parse_add_subset): Updated.
(riscv_parse_std_ext): Updated.
(riscv_set_default_arch): Set the default subset list according to
the default_enable field of riscv_supported_*ext tables.
(riscv_parse_subset): If the input ARCH is NULL, then we call
riscv_set_default_arch to set the default subset list.
* elfxx-riscv.h (cpu-riscv.h): Included.
(riscv_parse_subset_t): Removed get_default_version field, and added
isa_spec field to replace it.
(extern riscv_supported_std_ext): Removed.
gas/
* (bfd/cpu-riscv.h): Removed.
(struct riscv_ext_version): Renamed and moved to bfd/elfxx-riscv.c.
(ext_version_table): Likewise.
(riscv_get_default_ext_version): Likewise.
(ext_version_hash): Removed.
(init_ext_version_hash): Removed.
(riscv_set_arch): Updated since the field of rps is changed. Besides,
report error when the architecture string is empty.
(riscv_after_parse_args): Updated.
GDB Administrator [Fri, 17 Sep 2021 00:00:08 +0000 (00:00 +0000)]
Automatic date update in version.in
Tom de Vries [Thu, 16 Sep 2021 12:27:01 +0000 (14:27 +0200)]
[gdb/testsuite] Fix interrupted sleep in multi-threaded test-cases
When running test-case gdb.threads/continue-pending-status.exp with native, I
have:
...
(gdb) continue^M
Continuing.^M
PASS: gdb.threads/continue-pending-status.exp: attempt 0: continue for ctrl-c
^C^M
Thread 1 "continue-pendin" received signal SIGINT, Interrupt.^M
[Switching to Thread 0x7ffff7fc4740 (LWP 1276)]^M
0x00007ffff758e4c0 in __GI___nanosleep () at nanosleep.c:27^M
27 return SYSCALL_CANCEL (nanosleep, requested_time, remaining);^M
(gdb) PASS: gdb.threads/continue-pending-status.exp: attempt 0: caught interrupt
...
but with target board unix/-m32, I run into:
...
(gdb) continue^M
Continuing.^M
PASS: gdb.threads/continue-pending-status.exp: attempt 0: continue for ctrl-c
[Thread 0xf74aeb40 (LWP 31957) exited]^M
[Thread 0xf7cafb40 (LWP 31956) exited]^M
[Inferior 1 (process 31952) exited normally]^M
(gdb) Quit^M
...
The problem is that the sleep (300) call at the end of main is interrupted,
which causes the inferior to exit before the ctrl-c can be send.
This problem is described at "Interrupted System Calls" in the docs, and the
suggested solution (using a sleep loop) indeed fixes the problem.
Fix this instead using the more prevalent:
...
alarm (300);
...
while (1) sleep (1);
...
which is roughly equivalent because the sleep is called at the end of main,
but slightly better because it guards against hangs from the start rather than
from the end of main.
Likewise in gdb.base/watch_thread_num.exp.
Likewise in gdb.btrace/enable-running.exp, but use the sleep loop there,
because the sleep is not called at the end of main.
Tested on x86_64-linux.
Mike Frysinger [Thu, 16 Sep 2021 00:55:09 +0000 (20:55 -0400)]
gdb: manual: fix werrors typo
GDB Administrator [Thu, 16 Sep 2021 00:00:07 +0000 (00:00 +0000)]
Automatic date update in version.in
Tom de Vries [Wed, 15 Sep 2021 13:53:18 +0000 (15:53 +0200)]
[gdb/testsuite] Use function_range in gdb.dwarf2/dw2-abs-hi-pc.exp
When I run test-case gdb.dwarf2/dw2-abs-hi-pc.exp with gcc, we have:
...
(gdb) break hello^M
Breakpoint 1 at 0x4004c0: file dw2-abs-hi-pc-hello.c, line 24.^M
(gdb) PASS: gdb.dwarf2/dw2-abs-hi-pc.exp: break hello
...
but with clang, I run into:
...
(gdb) break hello^M
Breakpoint 1 at 0x4004e4^M
(gdb) FAIL: gdb.dwarf2/dw2-abs-hi-pc.exp: break hello
...
The problem is that the CU and function both have an empty address range:
...
<0><d2>: Abbrev Number: 1 (DW_TAG_compile_unit)
<108> DW_AT_name : dw2-abs-hi-pc-hello.c
<123> DW_AT_low_pc : 0x4004e0
<127> DW_AT_high_pc : 0x4004e0
<1><12f>: Abbrev Number: 2 (DW_TAG_subprogram)
<131> DW_AT_name : hello
<13a> DW_AT_low_pc : 0x4004e0
<13e> DW_AT_high_pc : 0x4004e0
...
The address ranges are set like this in dw2-abs-hi-pc-hello-dbg.S:
...
.4byte .hello_start /* DW_AT_low_pc */
.4byte .hello_end /* DW_AT_high_pc */
...
where the labels refer to dw2-abs-hi-pc-hello.c:
...
extern int v;
asm (".hello_start: .globl .hello_start\n");
void
hello (void)
{
asm (".hello0: .globl .hello0\n");
v++;
asm (".hello1: .globl .hello1\n");
}
asm (".hello_end: .globl .hello_end\n");
...
Using asm labels in global scope is a known source of problems, as explained
in the comment of proc function_range in gdb/testsuite/lib/dwarf.exp.
Fix this by using function_range instead.
Tested on x86_64-linux with gcc and clang-7 and clang-12.
Claudiu Zissulescu [Wed, 15 Sep 2021 10:43:40 +0000 (13:43 +0300)]
arc: Fix got-weak linker test
Use regular expressions to fix the got-weak linker test.
ld/
* testsuite/got-weak.d: Update test.
Signed-off-by: Claudiu Zissulescu <claziss@synopsys.com>
Andrew Burgess [Wed, 15 Sep 2021 10:24:49 +0000 (11:24 +0100)]
bfd: fix incorrect type used in sizeof
Noticed in passing that we used 'sizeof (char **)' when calculating
the size of a list of 'char *' pointers. Of course, this isn't really
going to make a difference anywhere, but we may as well be correct.
There should be no user visible changes after this commit.
bfd/ChangeLog:
* archures.c (bfd_arch_list): Use 'char *' instead of 'char **'
when calculating space for a string list.
Tom de Vries [Wed, 15 Sep 2021 09:46:57 +0000 (11:46 +0200)]
[gdb/doc] Fix typo in maint selftest entry
Fix typo "will by" -> "will be".
Tom de Vries [Wed, 15 Sep 2021 08:10:46 +0000 (10:10 +0200)]
[bfd] Ensure unique printable names for bfd archs
Remove duplicate entry in bfd_ft32_arch and bfd_rx_arch.
Fix printable name for bfd_mach_n1: "nh1" -> "n1".
PR 28336
* cpu-ft32.c (arch_info_struct): Remove "ft32" entry.
* cpu-rx.c (arch_info_struct): Remove "rx" entry.
* cpu-nds32.c (bfd_nds32_arch): Fix printable name for bfd_mach_n1
entry.
Alan Modra [Fri, 10 Sep 2021 09:21:30 +0000 (18:51 +0930)]
PR28328, dlltool ice
PR 28328
* archive.c (bfd_ar_hdr_from_filesystem): Don't use bfd_set_input_error
here, our caller will do that.
GDB Administrator [Wed, 15 Sep 2021 00:00:07 +0000 (00:00 +0000)]
Automatic date update in version.in
Tom de Vries [Tue, 14 Sep 2021 12:52:38 +0000 (14:52 +0200)]
[gdb/testsuite] Fix gdb_load_no_complaints with gnu-debuglink
When running test-case gdb.dwarf2/dw2-ranges-psym-warning.exp with target
board gnu-debuglink I run into:
...
(gdb) file dw2-ranges-psym-warning^M
Reading symbols from dw2-ranges-psym-warning...^M
Reading symbols from .debug/dw2-ranges-psym-warning.debug...^M
(gdb) FAIL: gdb.dwarf2/dw2-ranges-psym-warning.exp: No complaints
...
Fix this by updating the regexp in gdb_load_no_complaints.
Tested on x86_64-linux.
Tom de Vries [Tue, 14 Sep 2021 12:41:27 +0000 (14:41 +0200)]
[gdb/symtab] Fix function range handling in psymtabs
Consider the test-case from this patch.
We run into:
...
(gdb) PASS: gdb.dwarf2/dw2-ranges-psym-warning.exp: continue
bt^M
warning: (Internal error: pc 0x4004b6 in read in psymtab, but not in symtab.)^M
^M
warning: (Internal error: pc 0x4004b6 in read in psymtab, but not in symtab.)^M
^M
warning: (Internal error: pc 0x4004b6 in read in psymtab, but not in symtab.)^M
^M
warning: (Internal error: pc 0x4004b6 in read in psymtab, but not in symtab.)^M
^M
warning: (Internal error: pc 0x4004b6 in read in psymtab, but not in symtab.)^M
^M
warning: (Internal error: pc 0x4004b6 in read in psymtab, but not in symtab.)^M
^M
read in psymtab, but not in symtab.)^M
^M
)^M
(gdb) FAIL: gdb.dwarf2/dw2-ranges-psym-warning.exp: bt
...
This happens as follows.
The function foo:
...
<1><31>: Abbrev Number: 4 (DW_TAG_subprogram)
<33> DW_AT_name : foo
<37> DW_AT_ranges : 0x0
...
has these ranges:
...
00000000 00000000004004c1 00000000004004d2
00000000 00000000004004ae 00000000004004af
00000000 <End of list>
...
which have a hole at at [0x4004af,0x4004c1).
However, the address map of the partial symtabs incorrectly maps addresses
in the hole (such as 0x4004b6 in the backtrace) to the foo CU.
The address map of the full symbol table of the foo CU however does not
contain the addresses in the hole, which is what the warning / internal error
complains about.
Fix this by making sure that ranges of functions are read correctly.
The patch adds a bit to struct partial_die_info, in this hole (shown for
x86_64-linux):
...
/* 11: 7 | 4 */ unsigned int canonical_name : 1;
/* XXX 4-byte hole */
/* 16 | 8 */ const char *raw_name;
...
So there's no increase in size for 64-bit, but AFAIU there will be an increase
for 32-bit.
Tested on x86_64-linux.
gdb/ChangeLog:
2021-08-10 Tom de Vries <tdevries@suse.de>
PR symtab/28200
* dwarf2/read.c (struct partial_die_info): Add has_range_info and
range_offset field.
(add_partial_subprogram): Handle pdi->has_range_info.
(partial_die_info::read): Set pdi->has_range_info.
gdb/testsuite/ChangeLog:
2021-08-10 Tom de Vries <tdevries@suse.de>
PR symtab/28200
* gdb.dwarf2/dw2-ranges-psym-warning-main.c: New test.
* gdb.dwarf2/dw2-ranges-psym-warning.c: New test.
* gdb.dwarf2/dw2-ranges-psym-warning.exp: New file.
Tom de Vries [Tue, 14 Sep 2021 10:57:58 +0000 (12:57 +0200)]
[gdb/symtab] Fix CU list in .debug_names for dummy CUs
With current trunk and target board cc-with-debug-names we have:
...
(gdb) file dw2-ranges-psym^M
Reading symbols from dw2-ranges-psym...^M
warning: Section .debug_names in dw2-ranges-psym has abbreviation_table of \
size 1 vs. written as 28, ignoring .debug_names.^M
(gdb) set complaints 0^M
(gdb) FAIL: gdb.dwarf2/dw2-ranges-psym.exp: No complaints
...
The executable has 8 compilation units:
...
$ readelf -wi dw2-ranges-psym | grep @
Compilation Unit @ offset 0x0:
Compilation Unit @ offset 0x2e:
Compilation Unit @ offset 0xa5:
Compilation Unit @ offset 0xc7:
Compilation Unit @ offset 0xd2:
Compilation Unit @ offset 0x145:
Compilation Unit @ offset 0x150:
Compilation Unit @ offset 0x308:
...
of which the ones at 0xc7 and 0x145 are dummy CUs (that is, they do not
contain a single DIE), which were added by recent commit
5ef670d81fd
"[gdb/testsuite] Add dummy start and end CUs in dwarf assembly".
The .debug_names section contains this CU table:
...
[ 0] 0x0
[ 1] 0x2e
[ 2] 0xa5
[ 3] 0xd2
[ 4] 0x150
[ 5] 0x308
[ 6] 0x1
[ 7] 0x0
...
The last two entries are incorrect, and the entries for the dummy CUs are
missing.
The last two entries are incorrect because here in write_debug_names we write
the dimension of the CU list as 8:
...
/* comp_unit_count - The number of CUs in the CU list. */
header.append_uint (4, dwarf5_byte_order,
per_objfile->per_bfd->all_comp_units.size ()
- per_objfile->per_bfd->tu_stats.nr_tus);
...
while the actual dimension of the CU list is 6.
The discrepancy is caused by this code which skips the dummy CUs:
...
for (int i = 0; i < per_objfile->per_bfd->all_comp_units.size (); ++i)
{
...
/* CU of a shared file from 'dwz -m' may be unused by this main
file. It may be referenced from a local scope but in such
case it does not need to be present in .debug_names. */
if (psymtab == NULL)
continue;
...
because they have a null partial symtab.
We can fix this by writing the actual dimension of the CU list, but that still
leaves the dummy CUs out of the CU list. The purpose of having these is to
delimit the end of preceding CUs.
So, fix this by:
- removing the code that skips the dummy CUs (note that the same change
was done for .gdb_index in commit
efba5c2319d '[gdb/symtab] Handle PU
without import in "save gdb-index"'.
- verifying that all units are represented in the CU/TU lists
- using the actual CU list size when writing the dimension of the CU list
(and likewise for the TU list).
Tested on x86_64-linux with native and target board cc-with-debug-names.
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=28261
Tom de Vries [Tue, 14 Sep 2021 10:57:58 +0000 (12:57 +0200)]
[gdb/testsuite] Generate .debug_aranges in gdb.dwarf2/locexpr-data-member-location.exp
When running test-case gdb.dwarf2/locexpr-data-member-location.exp with target
board cc-with-debug-names, all tests pass but we run into PR28261:
...
(gdb) run ^M
Starting program: locexpr-data-member-location ^M
warning: Section .debug_names in locexpr-data-member-location-lib.so has \
abbreviation_table of size 1 vs. written as 37, ignoring .debug_names.^M
...
Using a patch that fixes PR28261, the warning is gone, but we run into:
...
FAIL: gdb.dwarf2/locexpr-data-member-location.exp: step into foo
...
This is due a missing .debug_aranges contribution for the CU declared in
gdb.dwarf2/locexpr-data-member-location.exp.
Fix this by adding the missing .debug_aranges contribution.
Tested on x86_64-linux.
Claudiu Zissulescu [Tue, 14 Sep 2021 09:10:54 +0000 (12:10 +0300)]
arc: Fix potential invalid pointer access when fixing got symbols.
When statically linking, it can arrive to an undefined weak symbol of
which its value cannot be determined. However, we are having pieces of
code which doesn't take this situation into account, leading to access
a structure which may not be initialized. Fix this situation and add a
test.
bfd/
xxxx-xx-xx Cupertino Miranda <cmiranda@synopsys.com>
Claudiu Zissulescu <claziss@synopsys.com>
* arc-got.h (arc_static_sym_data): New structure.
(get_static_sym_data): New function.
(relocate_fix_got_relocs_for_got_info): Move the computation fo
symbol value and section to above introduced function, and use
this new function.
ld/testsuite/
xxxx-xx-xx Claudiu Zissulescu <claziss@synopsys.com>
* ld-arc/got-weak.d: New file.
* ld-arc/got-weak.s: Likewise.
Signed-off-by: Claudiu Zissulescu <claziss@synopsys.com>
fix
Mike Frysinger [Tue, 14 Sep 2021 02:45:19 +0000 (22:45 -0400)]
sim: bfin: add support for SDL2
This probably should have been ported long ago, but better late than
never. We keep support for both versions for now since both projects
tend to have long lifetimes. Maybe consider dropping SDL1 in another
ten years.
GDB Administrator [Tue, 14 Sep 2021 00:00:06 +0000 (00:00 +0000)]
Automatic date update in version.in
Tom Tromey [Sun, 3 May 2020 21:58:27 +0000 (15:58 -0600)]
Remove use of __CYGNUSCLIB__
I found a check of __CYGNUSCLIB__ in dbxread.c. I think this is dead
code. This patch removes it.
Tom de Vries [Mon, 13 Sep 2021 19:41:13 +0000 (21:41 +0200)]
[gdb/testsuite] Check for valid test name
When running gdb.base/batch-exit-status.exp I noticed that the test name
contains a newline:
...
PASS: gdb.base/batch-exit-status.exp: : No such file or directory\.^M
: No such file or directory\.: [lindex $result 2] == 0
...
Check for this in ::CheckTestNames::check, such that we have a warning:
...
PASS: gdb.base/batch-exit-status.exp: : No such file or directory\.^M
: No such file or directory\.: [lindex $result 2] == 0
WARNING: Newline in test name
...
Tested on x86_64-linux.
Tom de Vries [Mon, 13 Sep 2021 18:16:36 +0000 (20:16 +0200)]
[gdb/tdep] Fix exec check in gdb_print_insn_arm
With a gdb build with --enable-targets=all we run into a KFAIL:
...
KFAIL: gdb.gdb/unittest.exp: executable loaded: maintenance selftest, \
failed none (PRMS: gdb/27891)
...
due to:
...
Running selftest print_one_insn.^M
Self test failed: arch armv8.1-m.main: self-test failed at \
disasm-selftests.c:165^M
...
The test fails because we expect disassembling of one arm insn to consume 4
bytes and produce (using verbose = true in disasm-selftests.c):
...
arm mov r0, #0
...
but instead the disassembler uses thumb mode and only consumes 2
bytes and produces:
...
arm movs r0, r0
...
The failure does not show up in the "no executable loaded" variant because
this code in gdb_print_insn_arm isn't triggered:
...
if (current_program_space->exec_bfd () != NULL)
info->flags |= USER_SPECIFIED_MACHINE_TYPE;
...
and consequently we do this in print_insn:
...
if ((info->flags & USER_SPECIFIED_MACHINE_TYPE) == 0)
info->mach = bfd_mach_arm_unknown;
...
and don't set force_thumb to true in select_arm_features.
The code in gdb_print_insn_arm makes the assumption that the disassembly
architecture matches the exec architecture, which in this case is incorrect,
because the exec architecture is x86_64, and the disassembly architecture is
armv8.1-m.main. Fix that by explicitly checking it:
...
if (current_program_space->exec_bfd () != NULL
&& (current_program_space->exec_bfd ()->arch_info
== gdbarch_bfd_arch_info (gdbarch)))
...
This fixes the print_one_insn failure, so remove the KFAIL.
Tested on x86_64-linux.
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=27891
Tom de Vries [Mon, 13 Sep 2021 18:16:36 +0000 (20:16 +0200)]
[gdb/tdep] Reset force_thumb in parse_arm_disassembler_options
With a gdb build with --enable-targets=all, we have 2 arch-specific failures
in selftest print_one_insn:
...
$ gdb -q -batch a.out -ex "maint selftest print_one_insn" 2>&1 \
| grep "Self test failed: arch "
Self test failed: arch armv8.1-m.main: self-test failed at \
disasm-selftests.c:165
Self test failed: arch arm_any: self-test failed at disasm-selftests.c:165
$
...
During the first failed test, force_thumb is set to true, and remains so until
and during the second test, which causes the second failure.
Fix this by resetting force_thumb to false in parse_arm_disassembler_options,
such that we get just one failure:
...
$ gdb -q -batch a.out -ex "maint selftest print_one_insn" 2>&1 \
| grep "Self test failed: arch "
Self test failed: arch armv8.1-m.main: self-test failed at \
disasm-selftests.c:165
$
...
Tested on x86_64-linux.
Tom Tromey [Mon, 13 Sep 2021 13:49:36 +0000 (07:49 -0600)]
Fix no-Python build
A build without Python will currently fail, because
selftests::test_python uses gdb_python_initialized, which is only
conditionally defined.
This patch fixes the build by making test_python also be conditionally
defined. I chose this approach because the selftest will fail if
Python is not enabled, so it didn't seem useful to leave it defined.
Nelson Chu [Mon, 13 Sep 2021 12:22:47 +0000 (20:22 +0800)]
RISC-V: Update the assembler insn testcase.
Since the 0x57 is preserved for the vadd.vv instruction in the integration
branch, remove it to make sure the testcase can work.
gas/
* testsuite/gas/riscv/insn.d: Remove 0x57 since it is preserved
for vadd.vv instruction.
* testsuite/gas/riscv/insn.s: Likewise.
Jan Beulich [Mon, 13 Sep 2021 10:02:48 +0000 (11:02 +0100)]
MIPS: don't use get_symbol_name() for section parsing. With s_change_section() later calling obj_elf_section(), it seems better to pre-parse the section name by the same function that will be used there. This way no differences in what is accepted will result.
gas * config/tc-mips.c (s_change_section): Use obj_elf_section_name to
parse the section name.
Jan Beulich [Mon, 13 Sep 2021 10:00:25 +0000 (11:00 +0100)]
ia64: don't use get_symbol_name() for section parsing. With cross_section() later calling obj_elf_section(), it seems better to pre-parse the section name by the same function that will be used there. This way no differences in what is accepted will result.
gas * config/tc-ia64.c (cross_section): Use obj_elf_section_name to
parse the section name.
Tom de Vries [Mon, 13 Sep 2021 09:13:28 +0000 (11:13 +0200)]
[gdb/testsuite] Fix gdb.gdb/selftest.exp
With a gdb build with CFLAGS "-O2 -g -flto=auto", I run into:
...
#7 gdb_main (args=0x7fffffffd220) at src/gdb/main.c:1368^M
#8 main (argc=<optimized out>, argv=<optimized out>) at src/gdb/gdb.c:32^M
(gdb) FAIL: gdb.gdb/selftest.exp: backtrace through signal handler
...
which means that this regexp in proc test_with_self fails:
...
-re "#0.*(read|poll).*in main \\(.*\\) at .*gdb\\.c.*$gdb_prompt $" {
...
The problem is that gdb_main has been inlined into main, and consequently the
backtrace uses:
...
#x <fn> ...
...
instead of
...
#x <address> in <fn> ...
...
Fix this by updating the regexp to not require "in" before " main".
Tested on x86_64-linux.
Alan Modra [Mon, 13 Sep 2021 07:34:01 +0000 (17:04 +0930)]
Re: Deprecate a.out support for NetBSD targets
* config.bfd: Correct m68-*-*bsd* obsolete target match.
Tom de Vries [Mon, 13 Sep 2021 07:16:13 +0000 (09:16 +0200)]
[gdb/testsuite] Fix test name in gdb.base/batch-exit-status.exp
When running gdb.base/batch-exit-status.exp I noticed that the test name
contains a newline:
...
PASS: gdb.base/batch-exit-status.exp: : No such file or directory\.^M
: No such file or directory\.: [lindex $result 2] == 0
...
The mistake is that I passed an output regexp argument to a parameter
interpreted as testname prefix. Fix this by passing a testname prefix
instead.
Add support for checking output, to be able to handle the output regexp
argument.
Tested on x86_64-linux.
GDB Administrator [Mon, 13 Sep 2021 00:00:06 +0000 (00:00 +0000)]
Automatic date update in version.in
Tom de Vries [Sun, 12 Sep 2021 09:30:06 +0000 (11:30 +0200)]
[gdb/testsuite] Set sysroot earlier in local-board.exp
When running test-case gdb.base/batch-exit-status.exp for native, it passes.
But with target board cc-with-debug-names, we run into (added missing double
quotes for clarity):
...
builtin_spawn $build/gdb/testsuite/../../gdb/gdb -nw -nx \
-data-directory $build/gdb/testsuite/../data-directory \
-iex "set height 0" -iex "set width 0" -ex "set sysroot" -batch ""^M
: No such file or directory.^M
PASS: gdb.base/batch-exit-status.exp: \
: No such file or directory\.: [lindex $result 2] == 0
FAIL: gdb.base/batch-exit-status.exp: \
: No such file or directory\.: [lindex $result 3] == $expect_status
...
The difference between the passing and failing case is that with native we
have (leaving out set height/width for brevity):
...
$ gdb -batch ""; echo $?
: No such file or directory.
1
...
and with target board cc-with-debug-names:
...
$ gdb -ex "set sysroot" -batch ""; echo $?
: No such file or directory.
0
...
The difference is expected. GDB returns the exit status of the last executed
command. In the former case that's 'file ""', which fails. In the latter case,
that's 'set sysroot', which succeeds.
Fix this by setting sysroot using -iex instead of -ex in local-board.exp, such
that we have the expected:
...
$ gdb -iex "set sysroot" -batch ""; echo $?
: No such file or directory.
1
...
Tested on x86_64-linux.
GDB Administrator [Sun, 12 Sep 2021 00:00:05 +0000 (00:00 +0000)]
Automatic date update in version.in
Mike Frysinger [Fri, 10 Sep 2021 03:55:01 +0000 (23:55 -0400)]
sim: run: change help short option to -h
It's unclear why -H was picked over the more standard -h, but since
-h is still not used, just change -H to -h to match pretty much every
other tool in the sourceware tree.
GDB Administrator [Sat, 11 Sep 2021 00:00:07 +0000 (00:00 +0000)]
Automatic date update in version.in
Tom de Vries [Fri, 10 Sep 2021 19:54:46 +0000 (21:54 +0200)]
[gdb/testsuite] Reimplement gdb.gdb/python-selftest.exp as unittest
The test-case gdb.gdb/python-selftest.exp:
- patches the gdb_python_initialized variable in gdb to 0
- checks that the output of a python command is "Python not initialized"
Reimplement gdb.gdb/python-selftest.exp as unittest, using:
- execute_command_to_string to capture the output
- try/catch to catch the "Python not initialized" exception.
Tested on x86_64-linux.
Tom de Vries [Fri, 10 Sep 2021 15:16:48 +0000 (17:16 +0200)]
[gdb/testsuite] Fix DUPLICATE in gdb.base/global-var-nested-by-dso.exp
Fix DUPLICATE in gdb.base/global-var-nested-by-dso.exp by naming commands more
uniquely.
Tom de Vries [Fri, 10 Sep 2021 15:16:48 +0000 (17:16 +0200)]
[gdb/testsuite] Fix DUPLICATE in gdb.base/skip-solib.exp
Fix DUPLICATE in gdb.base/skip-solib.exp by using with_test_prefix.
Also fix indentation style and long lines, remove outdated question/answer
bits, and use multi_line.
Tom de Vries [Fri, 10 Sep 2021 15:16:48 +0000 (17:16 +0200)]
[gdb/testsuite] Fix handling of nr_args < 3 in mi_gdb_test
The documentation of mi_gdb_test states that the command, pattern and message
arguments are mandatory:
...
# mi_gdb_test COMMAND PATTERN MESSAGE [IPATTERN] -- send a command to gdb;
# test the result.
...
However, this is not checked, and when mi_gdb_test is called with less than 3
arguments, it passes or fails silently.
Fix this by using the following semantics:
- if there are 1 or 2 arguments, use the command as the message.
- if there is 1 argument, use ".*" as the pattern.
- if there are no or too much arguments, error out.
Fix a PATH issue in gdb.mi/mi-logging.exp, introduced by using the command as
message. Fix a few other trivial-looking FAILs.
There are 11 less trivial-looking FAILs left in gdb.mi in test-cases:
- mi-nsmoribund.exp
- mi-breakpoint-changed.exp
- mi-break.exp.
Tested on x86_64-linux.
Tom de Vries [Fri, 10 Sep 2021 15:16:48 +0000 (17:16 +0200)]
[gdb/testsuite] Add string_list_to_regexp
A regexp pattern with escapes like this is hard to read:
...
set re "~\"\[$\]$decimal = 1\\\\n\"\r\n\\^done"
...
We can make it more readable by spacing out parts (which allows us to also use
the curly braces where that's convenient):
...
set re [list "~" {"} {[$]} $decimal " = 1" "\\\\" "n" {"} "\r\n" "\\^" "done"]
set re [join $re ""]
...
or by using string_to_regexp:
...
set re [list \
[string_to_regexp {~"$}] \
$decimal \
[string_to_regexp " = 1\\n\"\r\n^done"]]
set re [join $re ""]
...
Note: we have to avoid applying string_to_list to decimal, which is already a
regexp.
Add a proc string_list_to_regexp to make it easy to do both:
...
set re [list \
[string_list_to_regexp ~ {"} $] \
$decimal \
[string_list_to_regexp " = 1" \\ n {"} \r\n ^ done]]
...
Also add a test-case gdb.testsuite/string_to_regexp.exp.
Tom de Vries [Fri, 10 Sep 2021 15:16:48 +0000 (17:16 +0200)]
[gdb/testsuite] Handle unrecognized command line option in gdb_compile_test
When running the gdb testsuite with gnatmake-4.8, I get many fails of the
following form:
...
gcc: error: unrecognized command line option '-fgnat-encodings=all'^M
gnatmake: "gdb.ada/O2_float_param/foo.adb" compilation error^M
compiler exited with status 1
compilation failed: gcc ... gdb.ada/O2_float_param/foo.adb
gcc: error: unrecognized command line option '-fgnat-encodings=all'
gnatmake: "gdb.ada/O2_float_param/foo.adb" compilation error
FAIL: gdb.ada/O2_float_param.exp: scenario=all: compilation foo.adb
...
Fix this by marking the test unsupported instead, such that we have:
...
UNSUPPORTED: gdb.ada/O2_float_param.exp: scenario=all: compilation foo.adb \
(unsupported option '-fgnat-encodings=all')
...
Tested on x86_64-linux.
Alan Modra [Thu, 9 Sep 2021 01:29:24 +0000 (10:59 +0930)]
PowerPC, sanity check r_offset in relocate_section
* elf32-ppc.c (offset_in_range): New function.
(ppc_elf_vle_split16): Sanity check r_offset before accessing
section contents. Return status.
(ppc_elf_relocate_section): Sanity check r_offset before
accessing section contents. Don't segfault on NULL howto.
Alan Modra [Fri, 10 Sep 2021 08:31:43 +0000 (18:01 +0930)]
Re: gas: Use the directory name in .file 0
PR gas/28266
* testsuite/gas/elf/dwarf-5-file0-2.s: Use %object rather than
@object, .4byte instead of .long, and .asciz instead of .string.
Mike Frysinger [Thu, 9 Sep 2021 20:43:28 +0000 (16:43 -0400)]
etc: switch to automake
There's no content in here currently, so switching to automake is
pretty easy with a stub file.
Mike Frysinger [Thu, 9 Sep 2021 20:40:36 +0000 (16:40 -0400)]
etc: rename configure.in to configure.ac
The .in name has been deprecated for a long time in favor of .ac.
H.J. Lu [Thu, 9 Sep 2021 16:14:42 +0000 (09:14 -0700)]
gas: Use the directory name in .file 0
DWARF5 allows .file 0 to take an optional directory name. Set the entry
0 of the directory table to the directory name in .file 0.
PR gas/28266
* dwarf2dbg.c (get_directory_table_entry): Add an argument for
the directory name in .file 0 and use it, instead of PWD.
(allocate_filenum): Pass NULL to get_directory_table_entry.
(allocate_filename_to_slot): Pass the incoming dirname to
get_directory_table_entry.
* testsuite/gas/elf/dwarf-5-file0-2.d: New file.
* testsuite/gas/elf/dwarf-5-file0-2.s: Likewise.
* testsuite/gas/elf/elf.exp: Run dwarf-5-file0-2.
GDB Administrator [Fri, 10 Sep 2021 00:00:08 +0000 (00:00 +0000)]
Automatic date update in version.in
Yoshinori Sato [Thu, 2 Sep 2021 03:55:07 +0000 (12:55 +0900)]
gdb: Enable target rx-*-*linux.
I added rx-*-linux in binutils few yaers ago.
But missing this changes,
Tom de Vries [Thu, 9 Sep 2021 10:29:40 +0000 (12:29 +0200)]
[gdb/testsuite] Fix gdb.base/coredump-filter-build-id.exp with older eu-unstrip
On openSUSE Leap 42.3 with eu-unstrip 0.158, we run into:
...
(gdb) PASS: gdb.base/coredump-filter-build-id.exp: save corefile
First line of eu-unstrip: \
0x400000+0x202000
f4ae8502bd6a14770182382316bc595e9dc6f08b@0x400284 - - [exe]
FAIL: gdb.base/coredump-filter-build-id.exp: gcore dumped mapping with build-id
...
The test expects an actual file name instead of '[exe]', but that only got
introduced with eu-unstrip 0.161. Before it printed '[exe]' or '[pie]'.
Fix this by updating the regexp.
Tested on x86_64-linux.
Tom de Vries [Thu, 9 Sep 2021 10:29:40 +0000 (12:29 +0200)]
[gdb/testsuite] Fix various issues in gdb.mi/mi-sym-info.exp
I noticed this failure in gdb.mi/mi-sym-info.exp with gcc-4.8:
...
FAIL: gdb.mi/mi-sym-info.exp: -symbol-info-functions --max-results 1 \
(unexpected output)
...
due to function f2 instead of f3 being listed.
AFAICT, this is caused by a difference in debug info:
...
$ readelf -wi outputs/gdb.mi/mi-sym-info/mi-sym-info1.o \
| egrep "DW_AT_name.*: f[1-3]"
<72> DW_AT_name : f1
<a1> DW_AT_name : f2
<d0> DW_AT_name : f3
...
vs:
...
$ readelf -wi outputs/gdb.mi/mi-sym-info/mi-sym-info1.o \
| egrep "DW_AT_name.*: f[1-3]"
<f4> DW_AT_name : f3
<123> DW_AT_name : f2
<152> DW_AT_name : f1
...
and the command documentation does not mention an imposed order, so fix this
by allowing f2 as well.
Doing this fix, it made sense to do a refactoring of adding f2_re and f3_re
variables, in order to write (?:$f2_re|$f3_re), and I applied the same pattern
overall.
Furthermore, I found a silent FAIL due to calling mi_gdb_proc with 2 args, fix
by updating the regexp.
Then I ran with clang and found another FAIL, fix by updating the regexp.
Tested on x86_64-linux with gcc-4.8.5, gcc-7.5.0, gcc-11.2.1, clang-7.0.1 and
clang-12.0.1.
Tom de Vries [Thu, 9 Sep 2021 10:29:39 +0000 (12:29 +0200)]
[gdb/testsuite] Reimplement gdb.gdb/complaints.exp as unittest
When building gdb with "-Wall -O2 -g -flto=auto", I run into:
...
(gdb) call clear_complaints()^M
No symbol "clear_complaints" in current context.^M
(gdb) FAIL: gdb.gdb/complaints.exp: clear complaints
...
The problem is that lto has optimized away the clear_complaints function
and consequently the selftest doesn't work.
Fix this by reimplementing the selftest as a unit test.
Factor out two new functions:
- void
execute_fn_to_ui_file (struct ui_file *file, std::function<void(void)> fn);
- std::string
execute_fn_to_string (std::function<void(void)> fn, bool term_out);
and use the latter to capture the complaints output.
Tested on x86_64-linux.
Andrew Burgess [Wed, 1 Sep 2021 13:24:15 +0000 (14:24 +0100)]
gdb/python: remove all uses of Py_TPFLAGS_HAVE_ITER
Python 2 has a bit flag Py_TPFLAGS_HAVE_ITER which can be passed as
part of the tp_flags field when defining a new object type. This flag
is not defined in Python 3 and so we define it to 0 in
python-internal.h (when IS_PY3K is defined).
The meaning of this flag is that the object has the fields tp_iter and
tp_iternext. Note the use of "has" here, the flag says nothing about
the values in those fields, just that the type object has the fields.
In early versions of Python 2 these fields were no part of the
PyTypeObject struct, they were added in version 2.2 (see
https://docs.python.org/release/2.3/api/type-structs.html). And so,
there could be a some code compiled out there which has a PyTypeObject
structure within it that doesn't even have the tp_iter and tp_iternext
fields, attempting to access these fields would be undefined
behaviour.
And so Python added the Py_TPFLAGS_HAVE_ITER flag. If the flag is
present then Python is free to access the tp_iter and tp_iternext
fields.
If we consider GDB then we always assume that the tp_iter and
tp_iternext fields are part of PyTypeObject. If someone was crazy
enough to try and compile GDB against Python 2.1 then we'd get lots of
build errors saying that we were passing too many fields when
initializing PyTypeObject structures. And so, I claim, we can be sure
that GDB will always be compiled with a version of Python that has the
tp_iter and tp_iternext fields in PyTypeObject.
Next we can look at the Py_TPFLAGS_DEFAULT flag. In Python 2, each
time additional fields are added to PyTypeObject a new Py_TPFLAGS_*
flag would be defined to indicate whether those flags are present or
not. And, those new flags would be added to Py_TPFLAGS_DEFAULT. And
so, in the latest version of Python 2 the Py_TPFLAGS_DEFAULT flag
includes Py_TPFLAGS_HAVE_ITER (see
https://docs.python.org/2.7/c-api/typeobj.html).
In GDB we pass Py_TPFLAGS_DEFAULT as part of the tp_flags for all
objects we define.
And so, in this commit, I propose to remove all uses of
Py_TPFLAGS_HAVE_ITER from GDB, it's simply not needed.
There should be no user visible changes after this commit.
Mike Frysinger [Thu, 9 Sep 2021 07:01:28 +0000 (03:01 -0400)]
sim: accept -EB/-EL short options
Many GNU tools accept -EB/-EL as short options for selecting big &
little endian modes. While the sim has an -E option, it requires
spelling out "big" and "little". Adding support for -EB & -EL is
thus quite trivial, so lets round it out to be less annoying.
Mike Frysinger [Thu, 9 Sep 2021 06:44:59 +0000 (02:44 -0400)]
sim: ppc: drop support for std-config.h overrides
Only the ppc arch supports this kind of source file override logic.
All the others expose knobs via configure flags, and for some of
these, the ppc code does as well. For others, it doesn't make sense
to ever change them. Since it's unlikely anyone is using this, drop
it all to simplify the code (and to get us a little closer to the
common sim code).
Mike Frysinger [Thu, 9 Sep 2021 06:22:48 +0000 (02:22 -0400)]
sim: ppc: enable use of gnulib
All other sim arches are using this now, so finish up the logic in
the ppc arch to enable gnulib usage here too.
Mike Frysinger [Thu, 9 Sep 2021 05:44:24 +0000 (01:44 -0400)]
sim: drop old O_NDELAY & FNBLOCK support
We use these older names inconsistently in the sim codebase, and time
has moved on long ago, so drop support for these non-standard names.
POSIX provides O_NONBLOCK for us, so use it everywhere.
Mike Frysinger [Sat, 29 May 2021 21:17:40 +0000 (17:17 -0400)]
sim: dv-sockser: enable for mingw targets too
We have enough functionality from gnulib now to build sockser on
all platforms.
Non-blocking I/O is supported when F_GETFL/F_SETFL are unavailable,
but we can address that in a follow up commit. This mirrors what
is done in other places in the sim already.
Mike Frysinger [Thu, 9 Sep 2021 05:16:04 +0000 (01:16 -0400)]
sim: cgen: workaround Windows VOID define
The cgen framework provides a "VOID" type for code to use, but this
defines ends up conflicting with the standard Windows VOID define.
Since they actually define to the same thing ("void"), undef it here
to fix the Windows build.
We might want to reconsider the need for "VOID" in cgen, but that
will take larger discussion & coordination with the cgen project.
Mike Frysinger [Thu, 9 Sep 2021 04:46:11 +0000 (00:46 -0400)]
sim: dv-sockser: move sim-main.h include after system includes
The sim-main.h header is a bit of a dumping ground. Every arch can
(and many do) define all sorts of weird & common names that end up
conflicting with system headers. So including it before the system
headers sets us up for pain. v850 is a good example of this -- when
building for mingw, we see weird failures:
$ i686-w64-mingw32-gcc ... -c -o dv-sockser.o ../../../../sim/v850/../common/dv-sockser.c
In file included from ../../../../sim/v850/sim-main.h:11,
from ../../../../sim/v850/../common/dv-sockser.c:24:
../../../../sim/v850/../common/sim-base.h:97:32: error: expected ')' before '->' token
97 | # define STATE_CPU(sd, n) ((sd)->cpu[0])
| ^~
While gcc is unhelpful at first, running it through the preprocessor
by hand shows more details:
$ i686-w64-mingw32-gcc ... -E -dD -o dv-sockser.i ../../../../sim/v850/../common/dv-sockser.c
$ i686-w64-mingw32-gcc -c dv-sockser.i
In file included from /usr/i686-w64-mingw32/usr/include/minwindef.h:163,
from /usr/i686-w64-mingw32/usr/include/windef.h:9,
from /usr/i686-w64-mingw32/usr/include/windows.h:69,
from /usr/i686-w64-mingw32/usr/include/winsock2.h:23,
from ../../gnulib/import/sys/socket.h:684,
from ../../gnulib/import/netinet/in.h:43,
from ../../../../sim/v850/../common/dv-sockser.c:39:
/usr/i686-w64-mingw32/usr/include/winnt.h:4803:25: error: expected ')' before '->' token
4803 | DWORD State;
| ^
| )
This is because v850 sets up this common name:
All of this needs cleaning up someday, but since the dv-sockser code
definitely should be fixed in this way, lets do that now and unblock
the v850 code.
Mike Frysinger [Thu, 9 Sep 2021 04:10:20 +0000 (00:10 -0400)]
sim: mips: delete unused PSIZE define
It's unclear what this define is for as it appears to be unused, and
has never been used in the history of the mips sim. Delete it to tidy
up, and to fix build errors for Windows targets that have a standard
"PSIZE" struct in their system headers. This doesn't show up yet as
most sim files don't include many system headers, but enabling sockser
code for mingw uncovers the conflict.
Unfortunately the error produced by gcc is inscrutable, but running
it through the preprocessor manually manages to provide a pointer to
the underlying issue.
$ i686-w64-mingw32-gcc ... -c -o dv-sockser.o ../../../../sim/mips/../common/dv-sockser.c
<command-line>: error: expected identifier or '(' before numeric constant
In file included from /usr/i686-w64-mingw32/usr/include/windows.h:71,
from /usr/i686-w64-mingw32/usr/include/winsock2.h:23,
from ../../gnulib/import/sys/socket.h:684,
from ../../gnulib/import/netinet/in.h:43,
from ../../../../sim/mips/../common/dv-sockser.c:39:
/usr/i686-w64-mingw32/usr/include/wingdi.h:2934:59: error: unknown type name 'LPSIZE'; did you mean 'LPSIZEL'?
2934 | WINGDIAPI WINBOOL WINAPI GetAspectRatioFilterEx(HDC hdc,LPSIZE lpsize);
| ^~~~~~
| LPSIZEL
...
$ i686-w64-mingw32-gcc ... -E -dD -o dv-sockser.i ../../../../sim/mips/../common/dv-sockser.c
$ i686-w64-mingw32-gcc -c dv-sockser.i
In file included from /usr/i686-w64-mingw32/usr/include/windows.h:69,
from /usr/i686-w64-mingw32/usr/include/winsock2.h:23,
from ../../gnulib/import/sys/socket.h:684,
from ../../gnulib/import/netinet/in.h:43,
from ../../../../sim/mips/../common/dv-sockser.c:39:
/usr/i686-w64-mingw32/usr/include/windef.h:104:9: error: expected identifier or '(' before numeric constant
104 | } SIZE,*PSIZE,*LPSIZE;
| ^~
Mike Frysinger [Thu, 9 Sep 2021 03:31:27 +0000 (23:31 -0400)]
sim: ppc: switch to common warning flags
Now that the ppc code has been cleaned up enough to use the same set
of warning flags as the common code, delete the ppc-specific configure
logic so we can leverage what the common code already defined for us.
Tom de Vries [Wed, 19 May 2021 10:46:47 +0000 (12:46 +0200)]
sim: ppc: enable -Wpointer-sign warnings
When compiling with --enable-werror and CFLAGS="-O0 -g -Wall", we run into:
...
src/sim/ppc/hw_memory.c: In function 'hw_memory_init_address':
src/sim/ppc/hw_memory.c:204:7: error: pointer targets in passing argument 4 \
of 'device_find_integer_array_property' differ in signedness \
[-Werror=pointer-sign]
&new_chunk->size);
^
...
Fix these by adding an explicit pointer cast. It's a bit ugly to use APIs
based on signed integers to read out unsigned values, but in practice, this
is par for the course in the ppc code.
We already use signed APIs and assign the result to unsigned values a lot:
see how device_find_integer_property returns a signed integer (cell), but
then assign it to unsigned types. The array APIs are not used that often
which is why we don't see many warnings, and we disable warnings when we
assign signed integers to unsigned integers in general.
The dtc/libfdt project (which is the standard in other projects) processes
the fdt blob as a series of bytes without any type information. Typing is
left to the caller. They have core APIs that read/write bytes, and a few
helper functions to cast/convert those bytes to the right value (e.g. u32).
In this ppc sim code, the core APIs use signed integers, and the callers
convert to unsigned, usually implicitly.
We could add some core APIs to the ppc sim that deal with raw bytes and then
add some helpers to convert to the right type, but that seems like a lot of
lifting for what boils down to a cast, and is effectively equivalent to all
the implicit assignments we use elsewhere. Long term, a lot of the ppc code
should either get converted to existing sim common code, or we should stand
up proper APIs in the common code first, or use standard libraries to do all
the processing (e.g. libfdt). Either way, this device.c code would all get
deleted, and callers (like these hw_*.c files) would get converted. Which
is also why we go with a cast rather new (but largely unused) APIs.
Mike Frysinger [Thu, 9 Sep 2021 01:49:00 +0000 (21:49 -0400)]
sim: ppc: enable -Wmissing-declarations & -Wmissing-prototypes
This aligns with common code which already uses this flag. We have
to add another local prototype to fix the failure, and add another
local decl for the SIM_DESC type. Unwinding these will require a
lot more work & conversions in the process, so going with the decl
for now unblocks the warning unification.
Mike Frysinger [Thu, 9 Sep 2021 01:26:14 +0000 (21:26 -0400)]
sim: microblaze: replace custom basic types with common ones
The basic "byte" type conflicts with Windows headers, and we already
have common types that provide the right sizes. So replace these with
the common ones to avoid issues.
CC dv-sockser.o
In file included from /usr/i686-w64-mingw32/usr/include/wtypes.h:8,
from /usr/i686-w64-mingw32/usr/include/winscard.h:10,
from /usr/i686-w64-mingw32/usr/include/windows.h:97,
from /usr/i686-w64-mingw32/usr/include/winsock2.h:23,
from ../../gnulib/import/sys/socket.h:684,
from ../../gnulib/import/netinet/in.h:43,
from .../build/sim/../../../sim/microblaze/../common/dv-sockser.c:39:
/usr/i686-w64-mingw32/usr/include/rpcndr.h:63:25: error: conflicting types for 'byte'; have 'unsigned char'
63 | typedef unsigned char byte;
| ^~~~
In file included from .../buildsim/../../../sim/microblaze/sim-main.h:21,
from .../buildsim/../../../sim/microblaze/../common/dv-sockser.c:24:
.../buildsim/../../../sim/microblaze/microblaze.h:94:25: note: previous declaration of 'byte' with type 'byte' {aka 'char'}
94 | typedef char byte;
| ^~~~
make: *** [Makefile:513: dv-sockser.o] Error 1
Jim Wilson [Thu, 9 Sep 2021 01:15:39 +0000 (18:15 -0700)]
RISC-V: Pretty print values formed with lui and addiw.
The disassembler has support to pretty print values created by an lui/addi
pair, but there is no support for addiw. There is also no support for
c.addi and c.addiw. This patch extends the pretty printing support to
handle these 3 instructions in addition to addi. Existing testcases serve
as tests for the new feature.
opcodes/
* riscv-dis.c (maybe_print_address): New arg wide. Sign extend when
wide is true.
(print_insn_args): Fix calls to maybe_print_address. Add checks for
c.addi, c.addiw, and addiw, and call maybe_print_address for them.
gas/
* testsuite/gas/riscv/insn.d: Update for disassembler change.
* testsuite/gas/li32.d, testsuite/gas/li64.d: Likwise.
* testsuite/gas/lla64.d: Likewise.
Mike Frysinger [Thu, 9 Sep 2021 00:58:03 +0000 (20:58 -0400)]
sim: ppc: align format string settings with common code
This copies logic used in the common sim warning configure code to fix
build errors for mingw targets. Turning format warnings on triggers
a failure in the debug.c file, so apply a minor fix at the same time.
Mike Frysinger [Thu, 9 Sep 2021 00:55:15 +0000 (20:55 -0400)]
sim: ppc: drop unnecessary config includes
This file is compiled for the --host & --build system which leads to
including the configure generated config.h in both environments.
This obviously doesn't work when the two targets don't look alike at
all and can cause build failures here (e.g. a mingw host & a linux
build). Since we don't actually need any config settings in this
very simple file, drop the includes entirely.
GDB Administrator [Thu, 9 Sep 2021 00:00:08 +0000 (00:00 +0000)]
Automatic date update in version.in
Mike Frysinger [Sat, 29 May 2021 19:57:48 +0000 (15:57 -0400)]
gnulib: import various network functions
Some sim ports use these to provide networking functionality via the
dv-sockser module or via direct emulation for a few ports.
Gdb seems to build just fine still too.
Tom Tromey [Wed, 8 Sep 2021 15:17:39 +0000 (09:17 -0600)]
Fix unit test build on Windows
Like Tom de Vries' earlier patch to fix the no-CXX_STD_THREAD case in
maint.c, this patch fixes a similar problem in
parallel-for-selftests.c. This fixes a build failure on Windows.
Alan Modra [Wed, 8 Sep 2021 03:48:02 +0000 (13:18 +0930)]
PowerPC64, sanity check r_offset in relocate_section
This hardens the powerpc64 linker code transformations.
* elf64-ppc.c (is_8byte_reloc, offset_in_range): New functions.
(ppc64_elf_relocate_section): Sanity check r_offset before
accessing section contents for various code transformations.
Alan Modra [Wed, 8 Sep 2021 03:25:48 +0000 (12:55 +0930)]
PowerPC64: Avoid useless work on R_PPC64_TPREL34
_bfd_elf_ppc_at_tprel_transform doesn't handle prefix instructions,
and I'm not inclined to implement code editing for them.
* elf64-ppc.c (ppc64_elf_relocate_section): Don't attempt tprel
transform for R_PPC64_TPREL34.
Andrew Burgess [Tue, 10 Aug 2021 13:41:30 +0000 (14:41 +0100)]
gdb: make thread_suspend_state::stop_pc optional
Currently the stop_pc field of thread_suspect_state is a CORE_ADDR and
when we want to indicate that there is no stop_pc available we set
this field back to a special value.
There are actually two special values used, in post_create_inferior
the stop_pc is set to 0. This is a little unfortunate, there are
plenty of embedded targets where 0 is a valid pc value. The more
common special value for stop_pc though, is set in
thread_info::set_executing, where the value (~(CORE_ADDR) 0) is used.
This commit changes things so that the stop_pc is instead a
gdb::optional. We can now explicitly reset the field to an
uninitialised state, we also have asserts that we don't read the
stop_pc when its in an uninitialised state (both in
gdbsupport/gdb_optional.h, when compiling with _GLIBCXX_DEBUG
defined, and in thread_info::stop_pc).
One situation where a thread will not have a stop_pc value is when the
thread is stopped as a consequence of GDB being in all stop mode, and
some other thread stopped at an interesting event. When GDB brings
all the other threads to a stop those other threads will not have a
stop_pc set (thus avoiding an unnecessary read of the pc register).
Previously, when GDB passed through handle_one (in infrun.c) the
threads executing flag was set to false and the stop_pc field was left
unchanged, i.e. it would (previous) have been left as ~0.
Now, handle_one leaves the stop_pc with no value.
This caused a problem when we later try to set these threads running
again, in proceed() we compare the current pc with the cached stop_pc.
If the thread was stopped via handle_one then the stop_pc would have
been left as ~0, and the compare (in proceed) would (likely) fail.
Now however, this compare tries to read the stop_pc when it has no
value and this would trigger an assert.
To resolve this I've added thread_info::stop_pc_p() which returns true
if the thread has a cached stop_pc. We should only ever call
thread_info::stop_pc() if we know that there is a cached stop_pc,
however, this doesn't mean that every call to thread_info::stop_pc()
needs to be guarded with a call to thread_info::stop_pc_p(), in most
cases we know that the thread we are looking at stopped due to some
interesting event in that thread, and so, we know that the stop_pc is
valid.
After running the testsuite I've seen no other situations where
stop_pc is read uninitialised.
There should be no user visible changes after this commit.
Tom de Vries [Wed, 8 Sep 2021 06:58:39 +0000 (08:58 +0200)]
[gdb/build] Fix build with undefined CXX_STD_THREAD
When building gdb on openSUSE Leap 42.3, we trigger the case that
CXX_STD_THREAD is undefined, and run into:
...
gdb/maint.c: In function 'void maintenance_show_worker_threads \
(ui_file*, int, cmd_list_element*, const char*)':
gdb/maint.c:877:14: error: 'gdb::thread_pool' has not been declared
gdb::thread_pool::g_thread_pool->thread_count ());
^
Makefile:1647: recipe for target 'maint.o' failed
make[1]: *** [maint.o] Error 1
...
Fix this by handling the undefined CXX_STD_THREAD case in
maintenance_show_worker_threads, such that we get:
...
$ gdb -q -batch -ex "maint show worker-thread"
The number of worker threads GDB can use is 0.
...
Tested on x86_64-linux.
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=28312
Mike Frysinger [Thu, 19 Aug 2021 21:21:55 +0000 (17:21 -0400)]
sim: update configure target list
Fix sorting of the list, and update the globs to match the list used
in gdb's configure script.
Mike Frysinger [Thu, 19 Aug 2021 21:00:52 +0000 (17:00 -0400)]
gdb: cris: enable sim integration
The sim side is already ready to go for cris, so wire it up.
Mike Frysinger [Thu, 19 Aug 2021 20:59:29 +0000 (16:59 -0400)]
gdb: aarch64: enable sim integration
The sim side is already ready to go for aarch64, so wire it up.
Mike Frysinger [Thu, 19 Aug 2021 20:21:23 +0000 (16:21 -0400)]
gdb: sim: consolidate configure settings
Moving all the sim settings to one section makes it easier to track,
and makes it easier to keep it aligned with the sim target tests.
The gdb logic was duplicating this when handling different OS targets
instead of having a single cpu check. Now it's more obvious that the
sim is tied to a cpu and not related to the OS.
GDB Administrator [Wed, 8 Sep 2021 00:00:07 +0000 (00:00 +0000)]
Automatic date update in version.in
Tom Tromey [Tue, 7 Sep 2021 18:16:09 +0000 (12:16 -0600)]
Remove unused declaration from gdbserver/win32-low.h
I noticed that gdbserver/win32-low.h has an unused declaration. This
code was changed a while ago, but this declaration slipped through.
This patch removes it. Tested by rebuilding.
Andrew Burgess [Tue, 17 Aug 2021 12:29:22 +0000 (13:29 +0100)]
gdb: make use of std::string in utils.c
Replace some of the manual string management (malloc/free) with
std::string when creating commands in utils.c.
Things are a little bit messy as, creating the prefix commands (using
add_basic_prefix_cmd and add_show_prefix_cmd), doesn't copy the doc
string, while creating the actual set/show commands (using
add_setshow_enum_cmd) does copy the doc string.
As a result, I have retained the use of xstrprintf when creating the
prefix command doc strings, but switched to using std::string when
creating the actual set/show commands.
There should be no user visible changes after this commit.
Luis Machado [Tue, 7 Sep 2021 13:41:01 +0000 (10:41 -0300)]
Revert: [AArch64] MTE corefile support
bfd * elf.c (elfcore_make_memtag_note_section): New function.
(elfcore_grok_note): Handle NT_MEMTAG note types.
binutils* readelf.c (get_note_type): Handle NT_MEMTAG note types.
include * elf/common.h (NT_MEMTAG): New constant.
(NT_MEMTAG_TYPE_AARCH_MTE): New constant.
Andrew Burgess [Tue, 17 Aug 2021 10:54:51 +0000 (11:54 +0100)]
gdb: use bool instead of int in struct internal_problem
Change struct internal_problem (gdb/utils.c) to use bool instead of
int, update the 3 static instances of this structure that we create to
use true/false instead of 1/0.
I've also updated the comments on struct internal_problem as the
existing comment doesn't seem to be referring to the structure, it
talks about returning something, which doesn't make sense in this
context.
There should be no user visible changes after this commit.
Andrew Burgess [Tue, 10 Aug 2021 10:20:44 +0000 (11:20 +0100)]
gdb: make thread_info::executing private
Rename thread_info::executing to thread_info::m_executing, and make it
private. Add a new get/set member functions, and convert GDB to make
use of these.
The only real change of interest in this patch is in thread.c where I
have deleted the helper function set_executing_thread, and now just
use the new set function thread_info::set_executing. However, the old
helper function set_executing_thread included some code to reset the
thread's stop_pc, so I moved this code into the new function
thread_info::set_executing. However, I don't believe there is
anywhere that this results in a change of behaviour, previously the
executing flag was always set true through a call to
set_executing_thread anyway.
Nick Clifton [Tue, 7 Sep 2021 10:47:08 +0000 (11:47 +0100)]
Fix an illegal memory access triggered by an atempt to disassemble a corrupt xtensa binary.
PR 28305
* elf32-xtensa.c (elf_xtensa_do_reloc): Add check for put of range
reloc.
Andrew Burgess [Fri, 30 Jul 2021 11:56:34 +0000 (12:56 +0100)]
gdb/python: new function to add values into GDB's history
The guile API has (history-append! <value>) to add values into GDB's
history list. There is currently no equivalent in the Python API.
This commit adds gdb.add_history(<value>) to the Python API, this
function takes <value> a gdb.Value (or anything that can be passed to
the constructor of gdb.Value), and adds the value it represents to
GDB's history list. The index of the newly added value is returned.
Nick Clifton [Tue, 7 Sep 2021 08:44:17 +0000 (09:44 +0100)]
Fix illegal memory access triggered by an attempt to disassemble a corrupt RISC-V binary.
PR 28303
* elfxx-riscv.c (riscv_elf_add_sub_reloc): Add check for out of
range relocs.
Tom de Vries [Tue, 7 Sep 2021 08:31:42 +0000 (10:31 +0200)]
[gdb/testsuite] Handle internal-error in gdb_unload
When reverting commit
5a20fadc841 and using gdb_unload instead of runto "bar"
to trigger the internal-error in test-case
gdb.dwarf2/locexpr-data-member-location.exp, we run into:
...
ERROR: couldn't unload file in $gdb (timeout).
...
and the test-case takes about 1 minute.
Fix this by handling internal-error in gdb_unload, such that we have:
...
ERROR: Couldn't unload file in $gdb (GDB internal error).
ERROR: Could not resync from internal error (eof)
...
within 2 seconds.
Tested on x86_64-linux.
Alan Modra [Mon, 6 Sep 2021 12:53:15 +0000 (22:23 +0930)]
PR28307, segfault in ppc64_elf_toc64_reloc
Adds missing bfd_reloc_offset_in_range checks to various relocation
special_functions.
PR 28307
* elf32-ppc.c (ppc_elf_addr16_ha_reloc): Range check reloc offset.
* elf64-ppc.c (ppc64_elf_ha_reloc, ppc64_elf_brtaken_reloc): Likewise.
(ppc64_elf_toc64_reloc, ppc64_elf_prefix_reloc): Likewise.