Andrew Burgess [Fri, 2 Sep 2022 17:15:30 +0000 (18:15 +0100)]
opcodes/arm: use '@' consistently for the comment character
Looking at the ARM disassembler output, every comment seems to start
with a ';' character, so I assumed this was the correct character to
start an assembler comment.
I then spotted a couple of places where there was no ';', but instead,
just a '@' character. I thought that this was a case of a missing
';', and proposed a patch to add the missing ';' characters.
Turns out I was wrong, '@' is actually the ARM assembler comment
character, while ';' is the statement separator. Thus this:
nop ;@ comment
is two statements, the first is the 'nop' instruction, while the
second contains no instructions, just the '@ comment' comment text.
This:
nop @ comment
is a single 'nop' instruction followed by a comment. And finally,
this:
nop ; comment
is two statements, the first contains the 'nop' instruction, while the
second contains the instruction 'comment', which obviously isn't
actually an instruction at all.
Why this matters is that, in the next commit, I would like to add
libopcodes syntax styling support for ARM.
The question then is how should the disassembler style the three cases
above?
As '@' is the actual comment start character then clearly the '@' and
anything after it can be styled as a comment. But what about ';' in
the second example? Style as text? Style as a comment?
And the third example is even harder, what about the 'comment' text?
Style as an instruction mnemonic? Style as text? Style as a comment?
I think the only sensible answer is to move the disassembler to use
'@' consistently as its comment character, and remove all the uses of
';'.
Then, in the next commit, it's obvious what to do.
There's obviously a *lot* of tests that get updated by this commit,
the only actual code changes are in opcodes/arm-dis.c.
GDB Administrator [Tue, 1 Nov 2022 00:00:10 +0000 (00:00 +0000)]
Automatic date update in version.in
Tom Tromey [Wed, 12 Oct 2022 14:40:34 +0000 (08:40 -0600)]
Add missing TYPE_CODE_* constants to Python
A user noticed that TYPE_CODE_FIXED_POINT was not exported by the gdb
Python layer. This patch fixes the bug, and prevents future
occurences of this type of bug.
Carl Love [Mon, 31 Oct 2022 18:44:17 +0000 (14:44 -0400)]
Remove REPARSE condition to force hardware resource checking when updating watchpoints
Currently the resource checking is done if REPARSE is true. The hardware
watchpoint resource checking in update_watchpoint needs to be redone on
each call to function update_watchpoints as the value chain may have
changed. The number of hardware registers needed for a watchpoint can
change if the variable being watched changes. This situation occurs in
this test when watching variable **global_ptr_ptr. Initially when the
watch command is issued, only two addresses need to be watched as
**global_ptr_ptr has not yet been initialized. Once the value of
**global_ptr_ptr is initialized the locations to be tracked increase to
three addresses. However, update_watchpoints is not called again with
REPARSE set to 1 to force the resource checking to be redone. When the
test is run on Power 10, an internal gdb error occurs when the PowerPC
routine tries to setup the three hardware watchpoint address since the hw
only has two hardware watchpoint registers. The error occurs because the
resource checking was not redone in update_watchpoints after
**global_ptr_ptr changed.
The following descibes the situation in detail that occurs on Power 10 with
gdb running on the binary for gdb.base/watchpoint.c.
1 break func4
2 run
3 watch *global_ptr
4 next execute source code: buf[0] = 3;
5 next execute source code: global_ptr = buf;
6 next execute source code: buf[0] = 7;
7 delete 2 (delete watch *global_ptr)
8 watch **global_ptr_ptr
9 next execute source code: buf[1] = 5;
10 next global_ptr_ptr = &global_ptr;
11 next buf[0] = 9;
In step 8, the the watch **global_ptr_prt command calls update_watchpoint
in breakpoint.c with REPARSE set to 1. The function update_watchpoint
calls can_use_hardware_watchpoint to see if there are enough
resources available to add the watchpoint since REPARSE is set to 1. At
this point, **global_ptr_ptr has not been initialized so only two addresses
are watched. The val_chain contains the address for **global_ptr_ptr and 0
since **global_ptr_ptr has not been initialized. The update_watchpoint
updates the breakpoint list as follows:
breakpoint 0
loc 0: b->address = 0x100009c0
breakpoint 1
loc 1: b->address = 0x7ffff7f838a0
breakpoint 2
loc 2: b->address = 0x7ffff7b7fc54
breakpoint 3
loc 3: b->address = 0x7ffff7a5788c
breakpoint 4
loc 4: b->address = 0x0 <-- location pointed to by global_ptr_ptr
loc 5: b->address = 0x100200b8 <-- global_ptr_ptr watchpoint
breakpoint 5
loc 6: b->address = 0x7ffff7b7fc54
In step 10, the next command executes the source code
global_ptr_ptr = &global_ptr. This changes the set of locations to be
watched for the watchpoint **global_ptr_prt. The list of addresses for the
breakpoint consist of the address for global_ptr_prt, global_ptr and buf.
The breakpoint list gets updated by update_watchpoint as follows:
breakpoint 0
loc 0: b->address = 0x100009c0
breakpoint 1
loc 1: b->address = 0x7ffff7f838a0
breakpoint 2
loc 2: b->address = 0x7ffff7b7fc54
breakpoint 3
loc 3: b->address = 0x7ffff7a5788c
breakpoint 4
loc 4: b->address = 0x10020050 buf
loc 5: b->address = 0x100200b0 watch *global_ptr
loc 6: b->address = 0x100200b8 watch **global_ptr_ptr
breakpoint 5
loc 7: b->address = 0x7ffff7b7fc54
breakpoint 6
However, the hardware resource checking was not redone because
update_breakpoint was called with REPARSE equal to 0.
Step 11, execute the third next command. The function
ppc_linux_nat_target::low_prepare_to_resume() attempts a ptrace
call to setup each of the three address for breakpoint 4. The slot
value returned for the third ptrace call is -1 indicating an error
because there are only two hardware watchpoint registers available on
Power 10.
This patch removes just the statement "if (reparse)" in function
update_watchpoint to force the resources to be rechecked on every call to
the function. This ensures that any changes to the val_chain resulting
in needing more resources then available will be caught.
The patch has been tested on Power 8, Power 10 and X86-64. Note the patch
has no effect on Power 9 since hardware watchpoint support is disabled on
that processor.
Carl Love [Mon, 31 Oct 2022 18:43:47 +0000 (14:43 -0400)]
PowerPC, add support for recording pipe2 system call.
Test gdb.reverse/pipe-reverse.exp fails on Power 10 running the fedora 36
distro. The gdb record error message is:
Process record and replay target doesn't support syscall number 317.
System call 317 on PowerPC maps to the pipe2 system call.
This patch adds support for the missing pipe2 system call for PowerPC.
Patch fixes the test failure in gdb.reverse/pipe-reverse.exp.
The patch has been tested on Power 10 with no regression failures.
Jan Beulich [Mon, 31 Oct 2022 16:56:06 +0000 (17:56 +0100)]
x86: minor improvements to optimize_imm() (part III)
Earlier tidying still missed an opportunity: There's no need for the
"anyimm" static variable. Instead of using it in the loop to mask
"allowed" (which is necessary to satisfy operand_type_or()'s assertions)
simply use "mask", requiring it to be calculated first. That way the
post-loop masking by "mask" ahead of the operand_type_all_zero() can be
dropped.
Mike Frysinger [Wed, 26 Oct 2022 17:16:21 +0000 (23:01 +0545)]
sim: reg: constify store helper
These functions only read from memory, so mark the pointer as const.
Mike Frysinger [Wed, 26 Oct 2022 16:57:10 +0000 (22:42 +0545)]
sim: constify various integer readers
These functions only read from memory, so mark the pointer as const.
Mike Frysinger [Wed, 26 Oct 2022 16:45:13 +0000 (22:30 +0545)]
sim: cgen: constify GETT helpers
These functions only read from memory, so mark the pointer as const.
Mike Frysinger [Wed, 26 Oct 2022 16:08:30 +0000 (21:53 +0545)]
sim: common: change sim_read & sim_write to use void* buffers
When reading/writing arbitrary data to the system's memory, the unsigned
char pointer type doesn't make that much sense. Switch it to void so we
align a bit with standard C library read/write functions, and to avoid
having to sprinkle casts everywhere.
H.J. Lu [Mon, 31 Oct 2022 16:01:15 +0000 (09:01 -0700)]
x86: Silence GCC 12 warning on tc-i386.c
Silence GCC 12 warning on tc-i386.c:
gas/config/tc-i386.c: In function ‘md_assemble’:
gas/config/tc-i386.c:5039:16: error: too many arguments for format [-Werror=format-extra-args]
5039 | as_warn (_("only support RIP-relative address"), i.tm.name);
* config/tc-i386.c (md_assemble): Print mnemonic in RIP-relative
warning.
* estsuite/gas/i386/x86-64-prefetchi-warn.l: Updated.
Tom Tromey [Mon, 12 Sep 2022 13:04:21 +0000 (07:04 -0600)]
Use enum for gdbarch's call_dummy_location
This changes gdbarch to use an enum for call_dummy_location, providing
a little more type safety.
Tom Tromey [Tue, 18 Oct 2022 15:48:09 +0000 (09:48 -0600)]
Inline initialization of gdbarch members
This changes gdbarch to use the "predefault" to initialize its members
inline. This required changing a couple of the Value instantiations
to avoid a use of "gdbarch" during initialization, but on the whole I
think this is better -- it removes a hidden ordering dependency.
Tom Tromey [Tue, 18 Oct 2022 17:32:52 +0000 (11:32 -0600)]
Fix regression in pointer-to-member printing
PR c++/29243 points out that "info func" on a certain C++ executable
will cause an infinite loop in gdb.
I tracked this down to a bug introduced by commit
6b5a7bc76 ("Handle
member pointers directly in generic_value_print"). Before this
commit, the C++ code to print a member pointer would wind up calling
value_print_scalar_formatted; but afterward it simply calls
generic_value_print and gets into a loop.
This patch restores the previous behavior and adds a regression test.
Nick Clifton [Mon, 31 Oct 2022 14:41:54 +0000 (14:41 +0000)]
Updated Romainain translation for the binutils sub-directory and Swedish translations for the ld and opcodes sub-directories.
Cui, Lili [Mon, 31 Oct 2022 13:07:17 +0000 (21:07 +0800)]
Support Intel PREFETCHI
gas/ChangeLog:
* NEWS: Add support for Intel PREFETCHI instruction.
* config/tc-i386.c (load_insn_p): Use prefetch* to fold all prefetches.
(md_assemble): Add warning for illegal input of PREFETCHI.
* doc/c-i386.texi: Document .prefetchi.
* testsuite/gas/i386/i386.exp: Run PREFETCHI tests.
* testsuite/gas/i386/x86-64-lfence-load.d: Add PREFETCHI.
* testsuite/gas/i386/x86-64-lfence-load.s: Likewise.
* testsuite/gas/i386/x86-64-prefetch.d: New test.
* testsuite/gas/i386/x86-64-prefetchi-intel.d: Likewise.
* testsuite/gas/i386/x86-64-prefetchi-inval-register.d: Likewise..
* testsuite/gas/i386/x86-64-prefetchi-inval-register.s: Likewise.
* testsuite/gas/i386/x86-64-prefetchi-warn.l: Likewise.
* testsuite/gas/i386/x86-64-prefetchi-warn.s: Likewise.
* testsuite/gas/i386/x86-64-prefetchi.d: Likewise.
* testsuite/gas/i386/x86-64-prefetchi.s: Likewise.
opcodes/ChangeLog:
* i386-dis.c (reg_table): Add MOD_0F18_REG_6 and MOD_0F18_REG_7
(x86_64_table): Add X86_64_0F18_REG_6_MOD_0 and X86_64_0F18_REG_7_MOD_0.
(mod_table): Add MOD_0F18_REG_6 and MOD_0F18_REG_7.
(prefix_table): Add PREFIX_0F18_REG_6_MOD_0_X86_64 and
PREFIX_0F18_REG_7_MOD_0_X86_64.
(PREFETCHI_Fixup): New.
* i386-gen.c (cpu_flag_init): Add CPU_PREFETCHI_FLAGS.
(cpu_flags): Add CpuPREFETCHI.
* i386-opc.h (CpuPREFETCHI): New.
(i386_cpu_flags): Add cpuprefetchi.
* i386-opc.tbl: Add Intel PREFETCHI instructions.
* i386-init.h: Regenerated.
* i386-tbl.h: Likewise.
Bruno Larsen [Tue, 4 Oct 2022 14:09:05 +0000 (16:09 +0200)]
gdb/testsuite: fix gdb.cp/converts.exp to run with clang
Clang attempts to minimize the size of the debug-info by not adding
complete information about types that aren't constructed in a given
file. Specifically, this meant that there was minimal information about
class B in the test gdb.cp/converts.exp. To fix this, we just need to
construct any object of type B in that file.
Approved-By: Andrew Burgess <aburgess@redhat.com>
Bruno Larsen [Fri, 9 Sep 2022 18:34:27 +0000 (20:34 +0200)]
gdb/testsuite: add XFAIL to gdb.cp/ptype-flags.exp when using clang
When running gdb.cp/ptype-flags.exp using Clang, we get an unexpected
failure when printing the type of a class with an internal typedef. This
happens because Clang doesn't add accessibility information for typedefs
inside classes (see https://github.com/llvm/llvm-project/issues/57608
for more info). To help with Clang testing, an XFAIL was added to this
test.
Yoshinori Sato [Mon, 31 Oct 2022 10:46:37 +0000 (10:46 +0000)]
RX assembler: switch arguments of thw MVTACGU insn.
Nick Clifton [Mon, 31 Oct 2022 09:35:16 +0000 (09:35 +0000)]
objdump: Add configure time option to enable colored disassembly output by default.
PR 29457
* configure.ac: Add --enable-colored-disassembly.
* objdump.c: Add --disassembler-color=terminal.
* doc/binutils.texi (objdump): Document the new option.
* NEWS: Mention new feature.
* config.in: Regenerate in.
* configure: Regenerate.
Mark Harmstone [Mon, 31 Oct 2022 00:15:54 +0000 (00:15 +0000)]
ld: Add publics stream to PDB files
Mark Harmstone [Mon, 31 Oct 2022 00:15:53 +0000 (00:15 +0000)]
ld: Add section header stream to PDB files
Mark Harmstone [Mon, 31 Oct 2022 00:15:52 +0000 (00:15 +0000)]
ld: Use %E in einfo in pdb.c
Resubmission, taking into account
https://sourceware.org/pipermail/binutils/2022-October/123948.html.
GDB Administrator [Mon, 31 Oct 2022 00:00:08 +0000 (00:00 +0000)]
Automatic date update in version.in
Alan Modra [Sun, 30 Oct 2022 08:38:51 +0000 (19:08 +1030)]
Pool section entries for DWP version 1
Ref: https://gcc.gnu.org/wiki/DebugFissionDWP?action=recall&rev=3
Fuzzers have found a weakness in the code stashing pool section
entries. With random nonsensical values in the index entries (rather
than each index pointing to its own set distinct from other sets),
it's possible to overflow the space allocated, losing the NULL
terminator. Without a terminator, find_section_in_set can run off the
end of the shndx_pool buffer. Fix this by scanning the pool directly.
binutils/
* dwarf.c (add_shndx_to_cu_tu_entry): Delete range check.
(end_cu_tu_entry): Likewise.
(process_cu_tu_index): Fill shndx_pool by directly scanning
pool, rather than indirectly from index entries.
GDB Administrator [Sun, 30 Oct 2022 00:00:07 +0000 (00:00 +0000)]
Automatic date update in version.in
Maciej W. Rozycki [Sat, 29 Oct 2022 13:54:13 +0000 (14:54 +0100)]
gdb/testsuite: Wrap `param_integer_error' in gdb.guile/scm-parameter.exp
Wrap an overlong line in the definition of `param_integer_error' in
gdb.guile/scm-parameter.exp. No functional change.
Tsukasa OI [Sat, 24 Sep 2022 09:11:52 +0000 (09:11 +0000)]
sim/sh: Remove redundant function declaration
Clang generates a warning if there is a function declaration/definition
with zero arguments. Such declarations/definitions without a prototype (an
argument list) are deprecated forms of indefinite arguments
("-Wdeprecated-non-prototype"). On the default configuration, it causes a
build failure (unless "--disable-werror" is specified).
But there is another issue. This function declaration in sim/sh/interp.c
is completely redundant. This commit just removes that declaration.
Tsukasa OI [Mon, 26 Sep 2022 07:03:00 +0000 (07:03 +0000)]
sim/m32r: Initialize "list" variable
The variable "list" is only initialized when arg1 > 0 and when arg1 == 0,
an uninitialized value is passed to translate_endian_h2t function.
Although this behavior is harmless, this commit adds initialization to avoid
a GCC warning ("-Wmaybe-uninitialized").
Tsukasa OI [Sat, 24 Sep 2022 09:54:32 +0000 (09:54 +0000)]
sim/erc32: Use int32_t as IRQ callback argument
Clang generates a warning if an argument is passed to a function without
prototype (zero arguments, even without (void)). Such calls are deprecated
forms of indefinite arguments passing ("-Wdeprecated-non-prototype").
On the default configuration, it (somehow) doesn't cause a build failure but
a warning is generated.
But because the cause is the same as the issue the author fixed in
"sim/erc32: Use int32_t as event callback argument", it would be better to
fix it now to prevent problems in the future.
To fix the issue, this commit makes struct irqcall to use int32_t as a
callback (callback) argument of an IRQ.
Tsukasa OI [Sat, 24 Sep 2022 09:49:42 +0000 (09:49 +0000)]
sim/erc32: Use int32_t as event callback argument
Clang generates a warning if an argument is passed to a function without
prototype (zero arguments, even without (void)). Such calls are deprecated
forms of indefinite arguments passing ("-Wdeprecated-non-prototype").
On the default configuration, it causes a build failure (unless
"--disable-werror" is specified).
To fix that, this commit makes struct evcell to use int32_t as a callback
(cfunc) argument of an event. int32_t is chosen because "event" function
accepts "int32_t arg".
Tsukasa OI [Sat, 24 Sep 2022 09:16:57 +0000 (09:16 +0000)]
sim/erc32: Insert void parameter
Clang generates a warning if there is a function declaration/definition
with zero arguments. Such declarations/definitions without a prototype (an
argument list) are deprecated forms of indefinite arguments
("-Wdeprecated-non-prototype"). On the default configuration, it causes a
build failure (unless "--disable-werror" is specified).
This commit replaces () with (void) to avoid this warning.
Tom de Vries [Sat, 29 Oct 2022 07:43:32 +0000 (09:43 +0200)]
[gdb/testsuite] Use ssh -t in remote-*.exp
When running test-case gdb.server/multi-ui-errors.exp on target board
remote-gdbserver-on-localhost.exp, I run into:
...
(gdb) PASS: gdb.server/multi-ui-errors.exp: connect to gdbserver
continue^M
Continuing.^M
PASS: gdb.server/multi-ui-errors.exp: continue - extra UI
Remote debugging from host ::1, port 35466^M
FAIL: gdb.server/multi-ui-errors.exp: ensure inferior is running
...
The problem is that the target board uses ssh -T, which fails to guarantee
that output from the inferior will be available.
Fix this by copying proc ${board}_spawn from local-remote-host.exp, which
ensures using ssh -t. [ It would be nice to define an ssh base board to
get rid of the copies, but I'm not addressing that in this commit. ]
Likewise for target board remote-stdio-gdbserver.exp.
Tested on x86_64-linux.
Tom de Vries [Sat, 29 Oct 2022 07:43:32 +0000 (09:43 +0200)]
[gdb/testsuite] Fix gdb.server/multi-ui-errors.exp with local-remote-host-notty
With test-case gdb.server/multi-ui-errors.exp and host board
local-remote-host-notty, I run into:
...
(gdb) PASS: gdb.server/multi-ui-errors.exp: interact with GDB's main UI
Executing on target: kill -9 29666 (timeout = 300)
builtin_spawn -ignore SIGHUP kill -9 29666^M
echo^M
Remote connection closed^M
(gdb) (gdb) FAIL: gdb.server/multi-ui-errors.exp: \
main UI, prompt after gdbserver dies (timeout)
...
In contrast, with local-remote-host (so, everything the same but editing off):
...
(gdb) PASS: gdb.server/multi-ui-errors.exp: interact with GDB's main UI
Executing on target: kill -9 31245 (timeout = 300)
builtin_spawn -ignore SIGHUP kill -9 31245^M
Remote connection closed^M
(gdb) echo^M
(gdb) PASS: gdb.server/multi-ui-errors.exp: main UI, prompt after gdbserver dies
...
The test-case issues a kill, which results in a "Remote connection closed"
message and a prompt.
The problem is that the prompt is not consumed, so the subsequent echo may be
issued before that prompt, which causes a mismatch when matching the result
of the echo.
Fix this by consuming the "Remote connection closed" message and prompt.
Tested on x86_64-linux.
Tom de Vries [Sat, 29 Oct 2022 07:43:32 +0000 (09:43 +0200)]
[gdb/testsuite] Consume output asap in gdb.server/multi-ui-errors.exp
With test-case gdb.server/multi-ui-errors.exp we see:
...
(gdb) PASS: multi-ui-errors.exp: main UI, prompt after gdbserver dies
continue^M
Continuing.^M
echo^M
(gdb) PASS: multi-ui-errors.exp: extra UI, prompt after gdbserver dies
...
The continue is issued earlier in the test-case, but the output has not been
consumed, which makes it show up much later.
Consume the continue output asap, to make it clear when the continue is issued:
...
(gdb) PASS: gdb.server/multi-ui-errors.exp: connect to gdbserver
continue^M
Continuing.^M
PASS: gdb.server/multi-ui-errors.exp: continue - extra UI
...
Tested on x86_64-linux.
Tom de Vries [Sat, 29 Oct 2022 07:20:36 +0000 (09:20 +0200)]
[gdb/testsuite] Remove REMOTE_PORTNUM in remote-stdio-gdbserver.exp
The usage for board remote-stdio-gdbserver.exp is advertised as:
...
# bash$ make check RUNTESTFLAGS="--target_board=remote-stdio-gdbserver \
# REMOTE_USERNAME=... REMOTE_HOSTNAME=... REMOTE_PORTNUM=... \
# [REMOTE_TMPDIR=${remote_dir}] [GDBSERVER=${remote_gdbserver}]"
...
but when adding REMOTE_PORTNUM=22, I run into:
...
Running stop-reply-no-thread-multi.exp ...
ERROR: tcl error sourcing stop-reply-no-thread-multi.exp.
ERROR: couldn't execute "/usr/bin/ssh -p22": no such file or directory
while executing
"builtin_spawn {/usr/bin/ssh -p22} -l vries localhost {/usr/bin/gdbserver \
--once localhost:2346 \
/home/vries/gdb_versions/devel/build/gdb/testsuite/outp..."
...
Fix this by simply removing REMOTE_PORTNUM.
Tested on x86_64-linux.
Tsukasa OI [Mon, 17 Oct 2022 15:47:23 +0000 (15:47 +0000)]
sim, sim/{m32c,ppc,rl78}: Use getopt_long
Because of a Libiberty hack, getopt on GNU libc (2.25 or earlier) is
currently unusable on sim, causing a regression on CentOS 7.
This is caused as follows:
1. If HAVE_DECL_GETOPT is defined (getopt declaration with known prototype
is detected while configuration), a declaration of getopt in
"include/getopt.h" is suppressed.
The author started to define HAVE_DECL_GETOPT in sim with the commit
340aa4f6872c ("sim: Check known getopt definition existence").
2. GNU libc (2.25 or earlier)'s <unistd.h> includes <getopt.h> with a
special purpose macro defined to declare only getopt function but due
to include path (not tested while configuration), it causes <unistd.h>
to include Libiberty's "include/getopt.h".
3. If both 1. and 2. are satisfied, despite that <unistd.h> tries to
declare getopt by including <getopt.h>, "include/getopt.h" does not do
so, causing getopt function undeclared.
Getting rid of "include/getopt.h" (e.g. renaming this header file) is the
best solution to avoid hacking but as a short-term solution, this commit
replaces getopt with getopt_long under sim/.
Alan Modra [Sat, 29 Oct 2022 03:46:29 +0000 (14:16 +1030)]
pef: sanity check before malloc
And do the sanity check in a way that can't overflow.
* pef.c (bfd_pef_parse_function_stubs): Sanity check header
imported_library_count and total_imported_symbol_count before
allocating memory.
Alan Modra [Sat, 29 Oct 2022 00:12:50 +0000 (10:42 +1030)]
Fix small objcopy memory leak
* objcopy.c (copy_archive): Free l->name.
Alan Modra [Sat, 29 Oct 2022 00:01:01 +0000 (10:31 +1030)]
NULL dereference read in som_write_object_contents
objcopy copy_object may omit the call to bfd_copy_private_bfd_data for
various conditions deemed non-fatal, in which case obj_som_exec_data
will be NULL for the output file.
* som.c (som_finish_writing): Don't dereference NULL
obj_som_exec_data.
Nelson Chu [Sat, 29 Oct 2022 03:34:10 +0000 (11:34 +0800)]
RISC-V: Always generate mapping symbols at the start of the sections.
Before figuring out the suppress rule of mapping symbol with architecture
(changed back to $x), always generate them at the start of the sections.
gas/
* config/tc-riscv.c (need_arch_map_symbol): Removed.
(riscv_mapping_state): Updated.
(riscv_check_mapping_symbols): Updated.
* testsuite/gas/riscv/mapping-non-arch.d: Removed.
* testsuite/gas/riscv/mapping-non-arch.s: Likewise.
GDB Administrator [Sat, 29 Oct 2022 00:00:11 +0000 (00:00 +0000)]
Automatic date update in version.in
Palmer Dabbelt [Thu, 27 Oct 2022 20:20:44 +0000 (13:20 -0700)]
gas: NEWS: Note support for RISC-V Zawrs
This has been supported since
eb668e50036 ("RISC-V: Add Zawrs ISA
extension support").
Palmer Dabbelt [Thu, 27 Oct 2022 20:20:02 +0000 (13:20 -0700)]
gas: NEWS: Add a missing newline
Tom Tromey [Thu, 27 Oct 2022 00:26:38 +0000 (18:26 -0600)]
Convert compunit_language to a method
This changes compunit_language to be a method on compunit_symtab.
Approved-By: Simon Marchi <simon.marchi@efficios.com>
Tsukasa OI [Tue, 28 Jun 2022 10:07:52 +0000 (19:07 +0900)]
RISC-V: Improve "bits undefined" diagnostics
This commit improves internal error message
"internal: bad RISC-V opcode (bits 0x%lx undefined): %s %s"
to display actual unused bits (excluding non-instruction bits).
gas/ChangeLog:
* config/tc-riscv.c (validate_riscv_insn): Exclude non-
instruction bits from displaying internal diagnostics.
Change error message slightly.
Tsukasa OI [Thu, 6 Oct 2022 04:18:52 +0000 (04:18 +0000)]
RISC-V: Fallback for instructions longer than 64b
We don't support instructions longer than 64-bits yet. Still, we can
modify validate_riscv_insn function to prevent unexpected behavior by
limiting the "length" of an instruction to 64-bit (or less).
gas/ChangeLog:
* config/tc-riscv.c (validate_riscv_insn): Fix function
description comment based on current spec. Limit instruction
length up to 64-bit for now. Make sure that required_bits does
not corrupt even if unsigned long long is longer than 64-bit.
Jan Beulich [Fri, 28 Oct 2022 13:47:03 +0000 (15:47 +0200)]
RISC-V/gas: fix build with certain gcc versions
Some versions of gcc warn by default about shadowed outer-scope
declarations. This affects frag_align_code, which is declared in
frags.h. Rename the offending function parameter. While there also
switch to using true/false at the function call sites.
Tsukasa OI [Fri, 28 Oct 2022 06:46:13 +0000 (06:46 +0000)]
RISC-V: Fix build failure for -Werror=maybe-uninitialized
Commit
40f1a1a4564b ("RISC-V: Output mapping symbols with ISA string.")
caused a build failure on GCC 12 as follows:
make[3]: Entering directory '$(builddir)/gas'
CC config/tc-riscv.o
In file included from $(srcdir)/gas/config/tc-riscv.c:23:
$(srcdir)/gas/as.h: In function ‘make_mapping_symbol’:
$(srcdir)/gas/as.h:123:15: error: ‘buff’ may be used uninitialized [-Werror=maybe-uninitialized]
123 | #define xfree free
| ^~~~
$(srcdir)/gas/config/tc-riscv.c:487:9: note: ‘buff’ was declared here
487 | char *buff;
| ^~~~
cc1: all warnings being treated as errors
make[3]: *** [Makefile:1425: config/tc-riscv.o] Error 1
This is caused by a false positive of "maybe uninitialized" variable
detection (-Wmaybe-uninitialized). To avoid this error, this commit
initializes the local variable buff to NULL first in all cases.
gas/ChangeLog:
* config/tc-riscv.c (make_mapping_symbol): Initialize variable
buff with NULL to avoid build failure caused by a GCC's false
positive of maybe uninitialized variable detection.
Markus Metzger [Thu, 20 Oct 2022 14:27:34 +0000 (16:27 +0200)]
gdb, btrace: fix family and model computation
In gdb/nat/linux-btrace.c:btrace_this_cpu() we initialize the cpu
structure given to the libipt btrace decoder.
We only consider the extended model field for family 0x6 and forget about
family 0xf and we don't consider the extended family field. Fix it.
Tsukasa OI [Thu, 27 Oct 2022 04:33:37 +0000 (04:33 +0000)]
include: Define macro to ignore -Wdeprecated-declarations on GCC
"-Wdeprecated-declarations" warning option can be helpful to track
deprecated function delarations but sometimes we need to disable this
warning for a good reason.
DIAGNOSTIC_IGNORE_DEPRECATED_DECLARATIONS is an existing macro but only
defined on Clang. Since "-Wdeprecated-declarations" is also available on
GCC (>= 3.4.0), this commit adds equivalent definition as Clang.
__GNUC__ and __GNUC_MINOR__ are not checked because this header file seems
to assume GCC >= 4.6 (with "GCC diagnostic push/pop").
include/ChangeLog:
* diagnostics.h (DIAGNOSTIC_IGNORE_DEPRECATED_DECLARATIONS):
Define also on GCC.
Nelson Chu [Thu, 29 Sep 2022 11:07:46 +0000 (19:07 +0800)]
RISC-V: Output mapping symbols with ISA string.
RISC-V Psabi pr196,
https://github.com/riscv-non-isa/riscv-elf-psabi-doc/pull/196
bfd/
* elfxx-riscv.c (riscv_release_subset_list): Free arch_str if needed.
(riscv_copy_subset_list): Copy arch_str as well.
* elfxx-riscv.h (riscv_subset_list_t): Store arch_str for each subset list.
gas/
* config/tc-riscv.c (riscv_reset_subsets_list_arch_str): Update the
architecture string in the subset_list.
(riscv_set_arch): Call riscv_reset_subsets_list_arch_str after parsing new
architecture string.
(s_riscv_option): Likewise.
(need_arch_map_symbol): New boolean, used to indicate if .option
directives do affect instructions.
(make_mapping_symbol): New boolean parameter reset_seg_arch_str. Need to
generate $x+arch for MAP_INSN, and then store it into tc_segment_info_data
if reset_seg_arch_str is true.
(riscv_mapping_state): Decide if we need to add $x+arch for MAP_INSN. For
now, only add $x+arch if the architecture strings in subset list and segment
are different. Besides, always add $x+arch at the start of section, and do
not add $x+arch for code alignment, since rvc for alignment can be judged
from addend of R_RISCV_ALIGN.
(riscv_remove_mapping_symbol): If current and previous mapping symbol have
same value, then remove the current $x only if the previous is $x+arch;
Otherwise, always remove previous.
(riscv_add_odd_padding_symbol): Updated.
(riscv_check_mapping_symbols): Don't need to add any $x+arch if
need_arch_map_symbol is false, so changed them to $x.
(riscv_frag_align_code): Updated since riscv_mapping_state is changed.
(riscv_init_frag): Likewise.
(s_riscv_insn): Likewise.
(riscv_elf_final_processing): Call riscv_release_subset_list to release
subset_list of riscv_rps_as, rather than only release arch_str in the
riscv_write_out_attrs.
(riscv_write_out_attrs): No need to call riscv_arch_str, just get arch_str
from subset_list of riscv_rps_as.
* config/tc-riscv.h (riscv_segment_info_type): Record current $x+arch mapping
symbol of each segment.
* testsuite/gas/riscv/mapping-0*: Merged and replaced by mapping.s.
* testsuite/gas/riscv/mapping.s: New testcase, to test most of the cases in
one file.
* testsuite/gas/riscv/mapping-symbols.d: Likewise.
* testsuite/gas/riscv/mapping-dis.d: Likewise.
* testsuite/gas/riscv/mapping-non-arch.s: New testcase for the case that
does need any $x+arch.
* testsuite/gas/riscv/mapping-non-arch.d: Likewise.
* testsuite/gas/riscv/option-arch-01a.d: Updated.
opcodes/
* riscv-dis.c (riscv_disassemble_insn): Set riscv_fpr_names back to
riscv_fpr_names_abi or riscv_fpr_names_numeric when zfinx is disabled
for some specfic code region.
(riscv_get_map_state): Recognized mapping symbols $x+arch, and then reset
the architecture string once the ISA is different.
Lifang Xia [Fri, 28 Oct 2022 02:13:56 +0000 (10:13 +0800)]
binutils: Update my e-mail and Yunhai's e-mail
binutils/
* MAINTAINERS(C-SKY): update e-mails of Lifang & Yunhai.
Peter Bergner [Sat, 8 Oct 2022 21:19:51 +0000 (16:19 -0500)]
PowerPC: Add support for RFC02658 - MMA+ Outer-Product Instructions
gas/
* config/tc-ppc.c (md_assemble): Only check for prefix opcodes.
* testsuite/gas/ppc/rfc02658.s: New test.
* testsuite/gas/ppc/rfc02658.d: Likewise.
* testsuite/gas/ppc/ppc.exp: Run it.
opcodes/
* ppc-opc.c (XMSK8, P_GERX4_MASK, P_GERX2_MASK, XX3GERX_MASK): New.
(powerpc_opcodes): Add dmxvi8gerx4pp, dmxvi8gerx4, dmxvf16gerx2pp,
dmxvf16gerx2, dmxvbf16gerx2pp, dmxvf16gerx2np, dmxvbf16gerx2,
dmxvi8gerx4spp, dmxvbf16gerx2np, dmxvf16gerx2pn, dmxvbf16gerx2pn,
dmxvf16gerx2nn, dmxvbf16gerx2nn, pmdmxvi8gerx4pp, pmdmxvi8gerx4,
pmdmxvf16gerx2pp, pmdmxvf16gerx2, pmdmxvbf16gerx2pp, pmdmxvf16gerx2np,
pmdmxvbf16gerx2, pmdmxvi8gerx4spp, pmdmxvbf16gerx2np, pmdmxvf16gerx2pn,
pmdmxvbf16gerx2pn, pmdmxvf16gerx2nn, pmdmxvbf16gerx2nn.
Peter Bergner [Thu, 6 Oct 2022 22:08:53 +0000 (17:08 -0500)]
PowerPC: Add support for RFC02653 - Dense Math Facility
gas/
* config/tc-ppc.c (pre_defined_registers): Add dense math registers.
(md_assemble): Check dmr specified in correct operand.
* testsuite/gas/ppc/outerprod.s <dmsetaccz, dmxvbf16ger2,
dmxvbf16ger2nn, dmxvbf16ger2np, dmxvbf16ger2pn, dmxvbf16ger2pp,
dmxvf16ger2, dmxvf16ger2nn, dmxvf16ger2np, dmxvf16ger2pn, dmxvf16ger2pp,
dmxvf32ger, dmxvf32gernn, dmxvf32gernp, dmxvf32gerpn, dmxvf32gerpp,
dmxvf64ger, dmxvf64gernn, dmxvf64gernp, dmxvf64gerpn, dmxvf64gerpp,
dmxvi16ger2, dmxvi16ger2pp, dmxvi16ger2s, dmxvi16ger2spp, dmxvi4ger8,
dmxvi4ger8pp, dmxvi8ger4, dmxvi8ger4pp, dmxvi8ger4spp, dmxxmfacc,
dmxxmtacc, pmdmxvbf16ger2, pmdmxvbf16ger2nn, pmdmxvbf16ger2np,
pmdmxvbf16ger2pn, pmdmxvbf16ger2pp, pmdmxvf16ger2, pmdmxvf16ger2nn,
pmdmxvf16ger2np, pmdmxvf16ger2pn, pmdmxvf16ger2pp, pmdmxvf32ger,
pmdmxvf32gernn, pmdmxvf32gernp, pmdmxvf32gerpn, pmdmxvf32gerpp,
pmdmxvf64ger, pmdmxvf64gernn, pmdmxvf64gernp, pmdmxvf64gerpn,
pmdmxvf64gerpp, pmdmxvi16ger2, pmdmxvi16ger2pp, pmdmxvi16ger2s,
pmdmxvi16ger2spp, pmdmxvi4ger8, pmdmxvi4ger8pp, pmdmxvi8ger4,
pmdmxvi8ger4pp, pmdmxvi8ger4spp>: Add new tests.
* testsuite/gas/ppc/outerprod.d: Likewise.
* testsuite/gas/ppc/rfc02653.s: New test.
* testsuite/gas/ppc/rfc02653.d: Likewise.
* testsuite/gas/ppc/ppc.exp: Run it.
include/
* opcode/ppc.h (PPC_OPERAND_DMR): Define. Renumber following
PPC_OPERAND defines.
opcodes/
* ppc-dis.c (print_insn_powerpc): Prepend 'dm' when printing DMR regs.
* ppc-opc.c (insert_p2, (extract_p2, (insert_xa5, (extract_xa5,
insert_xb5, (extract_xb5): New functions.
(insert_xa6a, extract_xa6a, insert_xb6a, extract_xb6a): Disallow
operand overlap only on Power10.
(DMR, DMRAB, P1, P2, XA5p, XB5p, XDMR_MASK, XDMRDMR_MASK, XX2ACC_MASK,
XX2DMR_MASK, XX3DMR_MASK): New defines.
(powerpc_opcodes): Add dmmr, dmsetaccz, dmsetdmrz, dmxor, dmxvbf16ger2,
dmxvbf16ger2nn, dmxvbf16ger2np, dmxvbf16ger2pn, dmxvbf16ger2pp,
dmxvf16ger2, dmxvf16ger2nn, dmxvf16ger2np, dmxvf16ger2pn, dmxvf16ger2pp,
dmxvf32ger, dmxvf32gernn, dmxvf32gernp, dmxvf32gerpn, dmxvf32gerpp,
dmxvf64ger, dmxvf64gernn, dmxvf64gernp, dmxvf64gerpn, dmxvf64gerpp,
dmxvi16ger2, dmxvi16ger2pp, dmxvi16ger2s, dmxvi16ger2spp, dmxvi4ger8,
dmxvi4ger8pp, dmxvi8ger4, dmxvi8ger4pp, dmxvi8ger4spp, dmxxextfdmr256,
dmxxextfdmr512, dmxxinstdmr256, dmxxinstdmr512, dmxxmfacc, dmxxmtacc,
pmdmxvbf16ger2, pmdmxvbf16ger2nn, pmdmxvbf16ger2np, pmdmxvbf16ger2pn,
pmdmxvbf16ger2pp, pmdmxvf16ger2, pmdmxvf16ger2nn, pmdmxvf16ger2np,
pmdmxvf16ger2pn, pmdmxvf16ger2pp, pmdmxvf32ger, pmdmxvf32gernn,
pmdmxvf32gernp, pmdmxvf32gerpn, pmdmxvf32gerpp, pmdmxvf64ger,
pmdmxvf64gernn, pmdmxvf64gernp, pmdmxvf64gerpn, pmdmxvf64gerpp,
pmdmxvi16ger2, pmdmxvi16ger2pp, pmdmxvi16ger2s, pmdmxvi16ger2spp,
pmdmxvi4ger8, pmdmxvi4ger8pp, pmdmxvi8ger4, pmdmxvi8ger4pp,
pmdmxvi8ger4spp.
GDB Administrator [Fri, 28 Oct 2022 00:00:07 +0000 (00:00 +0000)]
Automatic date update in version.in
Andrew Burgess [Mon, 24 Oct 2022 15:55:07 +0000 (16:55 +0100)]
sim/cgen: initialize variable at creation in engine_run_n
Zero initialize engine_fns entirely at creation, then override those
fields we intend to use, rather than zero just initializing the unused
fields later on.
There should be no user visible changes after this commit.
Tom de Vries [Thu, 27 Oct 2022 15:14:33 +0000 (17:14 +0200)]
[gdb/testsuite] Remove address from test names
I noticed an address in a test name:
...
PASS: gdb.base/eh_return.exp: gdb_breakpoint: \
set breakpoint at *0x000000000040071b
...
Stabilize the test name by using "set breakpoint on address" instead.
Likewise in two other test-cases.
Tested on x86_64-linux.
Tom de Vries [Thu, 27 Oct 2022 14:53:12 +0000 (16:53 +0200)]
[gdb/testsuite] Disable styling in host board local-remote-host-native.exp
Propagate fix from commit
17c68d98f74 ("[gdb/testsuite] Disable styling in host
board local-remote-host.exp") to local-remote-host-native.exp.
Tested on x86_64-linux.
Tom de Vries [Thu, 27 Oct 2022 14:53:12 +0000 (16:53 +0200)]
[gdb/testsuite] Fix silent timeouts in gdb.mi/mi-exec-run.exp with remote host
I noticed that running test-case gdb.mi/mi-exec-run.exp with host board
local-remote-host.exp takes about 44 seconds.
I found two silent timeouts responsible for this.
The first is in mi_gdb_exit, where we have:
...
if { [is_remote host] && [board_info host exists fileid] } {
send_gdb "999-gdb-exit\n"
gdb_expect 10 {
-re "y or n" {
send_gdb "y\n"
exp_continue
}
-re "Undefined command.*$gdb_prompt $" {
send_gdb "quit\n"
exp_continue
}
-re "DOSEXIT code" { }
}
}
...
so in gdb.log we see:
...
999-gdb-exit^M
999^exit^M
=thread-exited,id="1",group-id="i1"^M
=thread-group-exited,id="i1"^M
...
after which expect just waits for the timeout.
Fix this by adding a gdb_expect clause to parse the exit:
...
-re "\r\n999\\^exit\r\n" { }
...
Note that we're not parsing the thread-exited/thread-group-exited messages, because
they may not be present:
...
$ gdb -i=mi
=thread-group-added,id="i1"
(gdb)
999-gdb-exit
999^exit
$
...
After fixing that, we have:
...
(gdb) ^M
saw mi error
PASS: gdb.mi/mi-exec-run.exp: inferior-tty=separate: mi=separate: \
force-fail=1: run failure detected
quit^M
&"quit\n"^M
...
What seems to be happening is that default_gdb_exit sends a cli interpreter
quit command to an mi interpreter, after which again expect just waits for the
timeout.
Fix this by adding mi_gdb_exit to the end of the test-case, as in many other
gdb.mi/*.exp test-cases.
After these two fixes, the test-case takes about 4 seconds.
Tested on x86_64-linux.
Tom de Vries [Thu, 27 Oct 2022 14:53:12 +0000 (16:53 +0200)]
[gdb/testsuite] Use remote_exec chmod instead of remote_spawn
I build gdb using -O2, and ran the testsuite using taskset -c 0, and ran into:
...
(gdb) PASS: gdb.server/connect-with-no-symbol-file.exp: sysroot=: \
action=delete: setup: adjust sysroot
builtin_spawn gdbserver --once localhost:2385 /connect-with-no-symbol-file^M
/bin/bash: connect-with-no-symbol-file: Permission denied^M
/bin/bash: line 0: exec: connect-with-no-symbol-file: cannot execute: \
Permission denied^M
During startup program exited with code 126.^M
Exiting^M
target remote localhost:2385^M
`connect-with-no-symbol-file' has disappeared; keeping its symbols.^M
localhost:2385: Connection timed out.^M
(gdb) FAIL: gdb.server/connect-with-no-symbol-file.exp: sysroot=: \
action=delete: connection to GDBserver succeeded
...
The expected series of events is (skipping disconnect and detach as I don't
think they're relevant to the problem):
- enter scenario "permission"
- cp $exec.bak $exec
- gdbserver start with $exec
- chmod 000 $exec
- connect to gdbserver
- enter scenario "delete"
- cp $exec.bak $exec
- gdbserver start with $exec
- delete $exec
- connect to gdbserver
The problem is that the chmod is executed using remote_spawn:
...
} elseif { $action == "permission" } {
remote_spawn target "chmod 000 $target_exec"
}
...
without waiting on the resulting spawn id, so we're not sure when the
chmod will have effect.
The FAIL we're seeing above is explained by the chmod having effect during the
delete scenario, after the "cp $exec.bak $exec" and before the "gdbserver
start with $exec".
Fix this by using remote_exec instead.
Likewise, fix a similar case in gdb.mi/mi-exec-run.exp.
Tested on x86_64-linux.
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=29726
Nelson Chu [Thu, 27 Oct 2022 01:39:13 +0000 (09:39 +0800)]
RISC-V: Fix build failures for -Werror=sign-compare.
elfnn-riscv.c: In function ‘riscv_relax_resolve_delete_relocs’:
elfnn-riscv.c:4256:30: error: operand of ‘?:’ changes signedness from ‘int’ to ‘unsigned int’ due to unsignedness of other operand [-Werror=sign-compare]
So make the operands unsigned could resolve problem.
bfd/
* elfnn-riscv.c (riscv_relax_resolve_delete_relocs): Fixed build
failures for -Werror=sign-compare.
Alan Modra [Thu, 27 Oct 2022 05:31:17 +0000 (16:01 +1030)]
Fuzzed files in archives
Given a fuzzed object file in an archive with section size exceeding
file size, objcopy will report an error like "section size (0xfeffffff
bytes) is larger than file size (0x17a bytes)" but will create a copy
of the object laid out for the large section. That means a large
temporary file on disk that is read back and written to the output
archive, which can take a while. The output archive is then deleted
due to the error. Avoid some of this silliness.
* objcopy.c (copy_section): If section contents cannot be read
set output section size to zero.
Martin Liska [Wed, 26 Oct 2022 08:44:50 +0000 (10:44 +0200)]
tests: use canonical option name
ld/ChangeLog:
* testsuite/ld-size/size.exp: Use canonical option name.
Alan Modra [Thu, 27 Oct 2022 00:52:13 +0000 (11:22 +1030)]
re: Support Intel AMX-FP16
Fix these fails due to the target padding out sections with nops.
x86_64-w64-mingw32 +FAIL: x86_64 AMX-FP16 insns
x86_64-w64-mingw32 +FAIL: x86_64 AMX-FP16 insns (Intel disassembly)
* testsuite/gas/i386/x86-64-amx-fp16-intel.d: Accept trailing nops.
* testsuite/gas/i386/x86-64-amx-fp16.d: Likewise.
Alan Modra [Thu, 27 Oct 2022 00:15:18 +0000 (10:45 +1030)]
Re: ld/testsuite: adjust ld-arm to run shared tests only when supported
commit
67527cffcd enabled previously disabled tests unresolved-1-dyn,
thumb-plt and thumb-plt-got for nacl. The first fails due to trying
to link against mixed-lib.so which isn't compiled for nacl. The last
two fail with
objdump: tmpdir/dump(.rel.plt): relocation 0 has invalid symbol index
14885104
and
readelf: Error: bad symbol index:
00e320f0 in reloc
Relocation section '.rel.plt' at offset 0x128 contains 1 entry:
Offset Info Type Sym. Value Symbol's Name
e320f000 e320f000 R_ARM_NONE
* testsuite/ld-arm/arm-elf.exp: Disable unresolved-1-dyn,
thumb-plt and thumb-plt-got for nacl.
GDB Administrator [Thu, 27 Oct 2022 00:00:09 +0000 (00:00 +0000)]
Automatic date update in version.in
Simon Marchi [Mon, 24 Oct 2022 16:43:38 +0000 (12:43 -0400)]
gdb/testsuite: fix gdb.guile/scm-parameter.exp "wrong type argument" test pattern for Guile >= 2.2
Since commit
90319cefe3 ("GDB/Guile: Don't assert that an integer value
is boolean"), I see:
FAIL: gdb.guile/scm-parameter.exp: kind=PARAM_ZINTEGER: test-PARAM_ZINTEGER-param: guile (set-parameter-value! test-PARAM_ZINTEGER-param #:unlimited)
FAIL: gdb.guile/scm-parameter.exp: kind=PARAM_ZUINTEGER: test-PARAM_ZUINTEGER-param: guile (set-parameter-value! test-PARAM_ZUINTEGER-param #:unlimited)
This comes from the fact that GDB outputs this:
ERROR: In procedure set-parameter-value!:
In procedure gdbscm_set_parameter_value_x: Wrong type argument in position 2 (expecting integer): #:unlimited
Error while executing Scheme code.
while the test expects an additional "ERROR:" on the second line,
something like this:
ERROR: In procedure set-parameter-value!:
ERROR: In procedure gdbscm_set_parameter_value_x: Wrong type argument in position 2 (expecting integer): #:unlimited
Error while executing Scheme code.
Guile 2.0 outputs the `ERROR:` on the second line, while later versions
do not. Change the pattern to accept both outputs. This is similar to
commit
6bbe1a929c6 ("[gdb/testsuite] Fix gdb.guile/scm-breakpoint.exp
with guile 3.0").
Change-Id: I9dc45e7492a4f08340cad974610242ed689de959
Luis Machado [Wed, 26 Oct 2022 12:00:50 +0000 (13:00 +0100)]
gdb/arm: Fix M-profile EXC_RETURN
Arm v8-M Architecture Reference Manual,
D1.2.95 EXC_RETURN, Exception Return Payload
describes ES bit:
"ES, bit [0]
Exception Secure. The security domain the exception was taken to.
The possible values of this bit are:
0 Non-secure.
1 Secure"
arm-tdep.c:3443, arm_m_exception_cache () function tests this bit:
exception_domain_is_secure = (bit (lr, 0) == 0);
The test is negated!
Later on line 3553, the condition evaluates if an additional state
context is stacked:
/* With the Security extension, the hardware saves R4..R11 too. */
if (tdep->have_sec_ext && secure_stack_used
&& (!default_callee_register_stacking || exception_domain_is_secure))
RM, B3.19 Exception entry, context stacking
reads:
RPLHM "In a PE with the Security Extension, on taking an exception,
the PE hardware:
...
2. If exception entry requires a transition from Secure state to
Non-secure state, the PE hardware extends the stack frame and also
saves additional state context."
So we should test for !exception_domain_is_secure instead of non-negated
value!
These two bugs compensate each other so unstacking works correctly.
But another test of exception_domain_is_secure (negated due to the
first bug) prevents arm_unwind_secure_frames to work as expected:
/* Unwinding from non-secure to secure can trip security
measures. In order to avoid the debugger being
intrusive, rely on the user to configure the requested
mode. */
if (secure_stack_used && !exception_domain_is_secure
&& !arm_unwind_secure_frames)
Test with GNU gdb (GDB) 13.0.50.
20221016-git.
Stopped in a non-secure handler:
(gdb) set arm unwind-secure-frames 0
(gdb) bt
#0 HAL_SYSTICK_Callback () at C:/dvl/stm32l5trustzone/GPIO_IOToggle_TrustZone/NonSecure/Src/nsmain.c:490
#1 0x0804081c in SysTick_Handler ()
at C:/dvl/stm32l5trustzone/GPIO_IOToggle_TrustZone/NonSecure/Src/nsstm32l5xx_it.c:134
#2 <signal handler called>
#3 HAL_GPIO_ReadPin (GPIOx=0x52020800, GPIO_Pin=8192)
at C:/dvl/stm32l5trustzone/GPIO_IOToggle_TrustZone/Drivers/STM32L5xx_HAL_Driver/Src/stm32l5xx_hal_gpio.c:386
#4 0x0c000338 in SECURE_Mode () at C:/dvl/stm32l5trustzone/GPIO_IOToggle_TrustZone/Secure/Src/main.c:86
#5 0x080403f2 in main () at C:/dvl/stm32l5trustzone/GPIO_IOToggle_TrustZone/NonSecure/Src/nsmain.c:278
Backtrace stopped: previous frame inner to this frame (corrupt stack?)
The frames #3 and #4 are secure. backtrace should stop before #3.
Stopped in a secure handler:
(gdb) bt
#0 HAL_SYSTICK_Callback () at C:/dvl/stm32l5trustzone/GPIO_IOToggle_TrustZone/Secure/Src/main.c:425
#1 0x0c000b6a in SysTick_Handler ()
at C:/dvl/stm32l5trustzone/GPIO_IOToggle_TrustZone/Secure/Src/stm32l5xx_it.c:234
warning: Non-secure to secure stack unwinding disabled.
#2 <signal handler called>
The exception from secure to secure erroneously stops unwinding. It should
continue as far as the security unlimited backtrace:
(gdb) set arm unwind-secure-frames 1
(gdb) si <-- used to rebuild frame cache after change of unwind-secure-frames
0x0c0008e6 425 if (SecureTimingDelay != 0U)
(gdb) bt
#0 0x0c0008e6 in HAL_SYSTICK_Callback () at C:/dvl/stm32l5trustzone/GPIO_IOToggle_TrustZone/Secure/Src/main.c:425
#1 0x0c000b6a in SysTick_Handler ()
at C:/dvl/stm32l5trustzone/GPIO_IOToggle_TrustZone/Secure/Src/stm32l5xx_it.c:234
#2 <signal handler called>
#3 0x0c000328 in SECURE_Mode () at C:/dvl/stm32l5trustzone/GPIO_IOToggle_TrustZone/Secure/Src/main.c:88
#4 0x080403f2 in main () at C:/dvl/stm32l5trustzone/GPIO_IOToggle_TrustZone/NonSecure/Src/nsmain.c:278
Backtrace stopped: previous frame inner to this frame (corrupt stack?)
Set exception_domain_is_secure to the value expected by its name.
Fix exception_domain_is_secure usage in the additional state context
stacking condition.
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Luis Machado [Wed, 26 Oct 2022 12:00:17 +0000 (13:00 +0100)]
gdb/arm: fix IPSR field test in arm_m_exception_cache ()
Arm v8-M Architecture Reference Manual,
D1.2.141 IPSR, Interrupt Program Status Register reads
"Exception, bits [8:0]"
9 bits, not 8! It is uncommon but true!
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Luis Machado [Wed, 26 Oct 2022 11:59:13 +0000 (12:59 +0100)]
gdb/arm: Terminate frame unwinding in M-profile lockup
In the lockup state the PC value of the the outer frame is irreversibly
lost. The other registers are intact so LR likely contains
PC of some frame next to the outer one, but we cannot analyze
the nearest outer frame without knowing its PC
therefore we do not know SP fixup for this frame.
The frame unwinder possibly gets mad due to the wrong SP value.
To prevent problems terminate unwinding if PC contains the magic
value of the lockup state.
Example session wihtout this change,
Cortex-M33 CPU in lockup, gdb 13.0.50.
20221016-git:
----------------
(gdb) c
Continuing.
Program received signal SIGINT, Interrupt.
0xeffffffe in ?? ()
(gdb) bt
#0 0xeffffffe in ?? ()
#1 0x0c000a9c in HardFault_Handler ()
at C:/dvl/stm32l5trustzone/GPIO_IOToggle_TrustZone/Secure/Src/stm32l5xx_it.c:99
#2 0x2002ffd8 in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb)
----------------
The frame #1 is at correct PC taken from LR, #2 is a total nonsense.
With the change:
----------------
(gdb) c
Continuing.
Program received signal SIGINT, Interrupt.
warning: ARM M in lockup state, stack unwinding terminated.
<signal handler called>
(gdb) bt
#0 <signal handler called>
(gdb)
----------------
There is a visible drawback of emitting a warning in a cache buildnig routine
as introduced in Torbjörn SVENSSON's
[PATCH v4] gdb/arm: Stop unwinding on error, but do not assert
The warning is printed just once and not repeated on each backtrace command.
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Mike Frysinger [Sat, 1 Jan 2022 18:08:20 +0000 (13:08 -0500)]
gdb: copyright: make file header scan a bit more pythonic
Should be functionally the same, but uses more pythonic idioms to get
fewer lines of code, and to make sure to not leak open file handles.
Approved-By: Simon Marchi <simon.marchi@efficios.com>
Mike Frysinger [Sat, 1 Jan 2022 18:02:02 +0000 (13:02 -0500)]
gdb: make copyright.py interface a bit nicer
This way people can run `./copyright.py --help` and get some info as
to what this does without it going and modifying the tree.
Mike Frysinger [Sun, 23 Oct 2022 19:45:18 +0000 (01:30 +0545)]
sim: testsuite: improve parallel test processing
The current logic limits itself to a maxdepth of 4 when looking for
results. This wouldn't be a problem if cris didn't have a testsuite
at a depth of 5 which we end up ignoring when summarizing. Rather
than bump the number from 4 to 5, rework the code so that we gather
the exact set of tests that we tried to run.
Alan Modra [Wed, 26 Oct 2022 07:20:29 +0000 (17:50 +1030)]
buffer overflow in _bfd_XX_print_ce_compressed_pdata
More fuzzed fun.
* peXXigen.c (_bfd_XX_print_ce_compressed_pdata): Use smaller of
virt_size and bfd section size as limit of function table.
Alan Modra [Wed, 26 Oct 2022 06:43:12 +0000 (17:13 +1030)]
Correct ELF reloc size sanity check
The external reloc size check was wrong. Here asect is the code/data
section, not the reloc section. So using this_hdr gave the size of
the code/data section.
* elf.c (_bfd_elf_get_reloc_upper_bound): Properly get
external size from reloc headers.
Alan Modra [Wed, 26 Oct 2022 06:04:19 +0000 (16:34 +1030)]
segfault in objdump.c reloc_at
bfd_canonicalize_reloc returns -1L on errors.
* objdump.c (load_specific_debug_section): Properly handle
error return from bfd_canonicalize_reloc.
Alan Modra [Wed, 26 Oct 2022 00:58:08 +0000 (11:28 +1030)]
som.c reloc sanity checking
This patch checks that relocations emitted in som_write_fixups have
offsets that are monotonic and within a section. To do that properly
using bfd_reloc_offset_in_range it is necessary to set the reloc howto
size field, which isn't used otherwise by the som backend. Note that
the sizes used are not exactly those in the old sizing switch
statement deleted from som_write_fixups, but all relocs handled by the
main switch statement there get the same size. Most unhandled relocs
get a zero size (exceptions being R_RELOCATION, R_SPACE_REF,
R_MILLI_REL, R_BREAKPOINT which all involve writing one word according
to my SOM reference). I figure it doesn't matter since any unhandled
reloc is converted to 0xff R_RESERVED, and a default of zero is better
for a "don't know" reloc.
Besides tidying the code, stringizing name from type in SOM_HOWTO
fixes R_REPEATED_INIT name.
* som.c (SOM_HOWTO): Add SIZE arg, delete NAME. Stringize type
to name.
(som_hppa_howto_table): Update with sizes.
(som_write_fixups): Delete sizing switch statement. Sanity check
bfd_reloc address against subsection size.
Alan Modra [Wed, 26 Oct 2022 00:56:34 +0000 (11:26 +1030)]
som.c buffer overflow
Fuzzed object files can put random values in bfd_reloc->address,
leading to large som_reloc_skip output.
* som.c (som_write_fixups): Allow for maximal som_reloc_skip.
Alan Modra [Tue, 25 Oct 2022 23:11:55 +0000 (09:41 +1030)]
PR29720, objdump -S crashes if build-id is missing
PR 29720
* objdump.c (slurp_file): Don't call debuginfod_find_source
when build_id is NULL.
GDB Administrator [Wed, 26 Oct 2022 00:00:08 +0000 (00:00 +0000)]
Automatic date update in version.in
Simon Marchi [Tue, 25 Oct 2022 02:05:15 +0000 (22:05 -0400)]
gdb: remove spurious spaces after frame_info_ptr
Fix some whitespace issues introduced with the frame_info_ptr patch.
Change-Id: I158d30d8108c97564276c647fc98283ff7b12163
Michael Matz [Thu, 20 Oct 2022 14:06:57 +0000 (16:06 +0200)]
x86-64: Use only one default max-page-size
On x86-64 the default ELF_MAXPAGESIZE depends on a configure
option (--disable-separate-code). Since
9833b775
("PR28824, relro security issues") we use max-page-size for relro
alignment (with a short interval, from
31b4d3a ("PR28824, relro
security issues, x86 keep COMMONPAGESIZE relro") to its revert
a1faa5ea, where x86-64 only used COMMONPAGESIZE as relro alignment
target).
But that means that a linker configured with --disable-separate-code
behaves different from one configured with --enable-separate-code
(the default), _even if using "-z {no,}separate-code" option to use
the non-configured behaviour_ . In particular it means that when
configuring with --disable-separate-code the linker will produce
binaries aligned to 2MB pages on disk, and hence generate 2MB
executables for a hello world (and even 6MB when linked with
"-z separate-code").
Generally we can't have constants that ultimately land in static
variables be depending on configure options if those only influence
behaviour that is overridable by command line options.
So, do away with that, make the default MAXPAGESIZE be 4k (as is default
for most x86-64 configs anyway, as most people won't configure with
--disable-separate-code). If people need more they can use the
"-z max-page-size" (with would have been required right now for a
default configure binutils).
bfd/
* elf64-x86-64.c (ELF_MAXPAGESIZE): Don't depend on
DEFAULT_LD_Z_SEPARATE_CODE.
Simon Marchi [Tue, 25 Oct 2022 13:50:56 +0000 (09:50 -0400)]
gdb/testsuite: make sure to consume the prompt in gdb.base/unwind-on-each-insn.exp
This test fails quite reliably for me when ran as:
$ taskset -c 1 make check TESTS="gdb.base/unwind-on-each-insn.exp" RUNTESTFLAGS="--target_board=native-gdbserver"
or more simply:
$ make check-read1 TESTS="gdb.base/unwind-on-each-insn.exp"
The problem is that the gdb_test_multiple call that grabs the frame id
from "maint print frame-id" does not consume the prompt. Well, it does
sometimes due to the trailing .*, but not always. If the prompt is not
consumed, the tests that follow get confused:
FAIL: gdb.base/unwind-on-each-insn.exp: gdb_breakpoint: set breakpoint at *foo
FAIL: gdb.base/unwind-on-each-insn.exp: disassemble foo
FAIL: gdb.base/unwind-on-each-insn.exp: get $sp and frame base in foo: get hexadecimal valueof "$sp"
... many more ...
Use -wrap to make gdb_test_multiple consume the prompt.
While at it, remove the bit that consumes the command name and do
exp_continue, it's not really necessary. And for consistency, do the
same changes to the gdb_test_multiple that consumes the stack address,
although that one was fine, it did consume the prompt explicitly.
Change-Id: I2b7328c8844c7e98921ea494c4c05107162619fc
Reviewed-By: Bruno Larsen <blarsen@redhat.com>
Tom de Vries [Tue, 25 Oct 2022 12:14:34 +0000 (14:14 +0200)]
[gdb/testsuite] Handle missing .note.GNU-stack
On openSUSE Tumbleweed I run into this for the dwarf assembly test-cases, and
some hardcoded assembly test-cases:
...
Running gdb.dwarf2/fission-absolute-dwo.exp ...
gdb compile failed, ld: warning: fission-absolute-dwo.o: \
missing .note.GNU-stack section implies executable stack
ld: NOTE: This behaviour is deprecated and will be removed in a future \
version of the linker
=== gdb Summary ===
# of untested testcases 1
...
Fix the dwarf assembly test-cases by adding the missing .note.GNU-stack in
proc Dwarf::assemble.
Fix the hard-coded test-cases using this command:
...
$ for f in $(find gdb/testsuite/gdb.* -name *.S); do
if ! grep -q note.GNU-stack $f; then
echo -e "\t.section\t.note.GNU-stack,\"\",@progbits" >> $f;
fi;
done
...
Likewise for .s files, and gdb/testsuite/lib/my-syscalls.S.
The idiom for arm seems to be to use %progbits instead, see commit
9a5911c08be
("gdb/testsuite/gdb.dwarf2: Replace @ with % for ARM compatability"), so
hand-edit gdb/testsuite/gdb.arch/arm-disp-step.S to use %progbits instead.
Note that dwarf assembly testcases use %progbits as decided by proc _section.
Tested on x86_64-linux.
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=29674
Tom de Vries [Tue, 25 Oct 2022 12:09:32 +0000 (14:09 +0200)]
[gdb/testsuite] Add missing skip_gdbserver_tests in gdb.multi/attach-no-multi-process.exp
I build gdb without gdbserver, and ran into:
...
(gdb) PASS: gdb.multi/attach-no-multi-process.exp: target_non_stop=off: \
switch to inferior 2
spawn of --once --multi localhost:2346 failed
ERROR: tcl error sourcing attach-no-multi-process.exp.
ERROR: tcl error code NONE
ERROR: Timeout waiting for gdbserver response.
...
Add the missing skip_gdbserver_tests.
Tested on x86_64-linux.
Tom de Vries [Tue, 25 Oct 2022 09:32:41 +0000 (11:32 +0200)]
[gdb] Rewrite RETHROW_ON_TARGET_CLOSE_ERROR into function
Recent commit
b2829fcf9b5 ("[gdb] Fix rethrow exception slicing in
insert_bp_location") introduced macro RETHROW_ON_TARGET_CLOSE_ERROR.
I wrote this as a macro in order to have the rethrowing throw be part of the
same function as the catch, but as it turns out that's not necessary.
Rewrite into a function.
Tested on x86_64-linux.
Simon Marchi [Tue, 25 Oct 2022 04:11:29 +0000 (00:11 -0400)]
gdb: internal_error -> internal_error_loc in gdb-gdb.gdb.in
Commit
f34652de0b ("internal_error: remove need to pass
__FILE__/__LINE__") renamed the internal_error function to
internal_error_loc. Change gdb-gdb.gdb.in accordingly.
Change-Id: I876e1623607b6becf74ade53d102ead53a74ed86
Nelson Chu [Mon, 24 Oct 2022 10:26:36 +0000 (18:26 +0800)]
RISC-V: Should reset `again' flag for _bfd_riscv_relax_pc.
The R_RISCV_DELETE relocations are no longer deleted at another relax pass,
so we should reset 'again' flag to true for _bfd_riscv_relax_pc, while the
deleted bytes are marked as R_RISCV_DELETE.
bfd/
* elfnn-riscv.c (_bfd_riscv_relax_pc): Set `again' to true while the
deleted bytes are marked as R_RISCV_DELETE.
Patrick O'Neill [Mon, 17 Oct 2022 01:37:35 +0000 (09:37 +0800)]
RISC-V: Improve link time complexity.
The riscv port does deletion and symbol table update for each relocation
while relaxing, so we are moving section bytes and scanning symbol table once
for each relocation. Compared to microblaze port, they record the relaxation
changes into a table, then do the deletion and symbol table update once per
section, rather than per relocation. Therefore, they should have better link
time complexity than us.
To improve the link time complexity, this patch try to make the deletion in
linear time. Compared to record the relaxation changes into a table, we
replace the unused relocation with R_RISCV_DELETE for the deleted bytes, and
then resolve them at the end of the section. Assuming the number of
R_RISCV_DELETE is m, and the number of symbols is n, the total link complexity
should be O(m) for moving section bytes, and O(m*n^2) for symbol table update.
If we record the relaxation changes into the table, and then sort the symbol
table by values, then probably can reduce the time complexity to O(m*n*log(n))
for updating symbol table, but it doesn't seem worth it for now.
bfd/
* elfnn-riscv.c (_riscv_relax_delete_bytes): Renamed from
riscv_relax_delete_bytes, updated to reduce the tiem complexity to O(m)
for memmove.
(typedef relax_delete_t): Function pointer declaration of delete functions.
(riscv_relax_delete_bytes): Can choose to use _riscv_relax_delete_piecewise
or _riscv_relax_delete_immediate for deletion.
(_riscv_relax_delete_piecewise): Just mark the deleted bytes as R_RISCV_DELETE.
(_riscv_relax_delete_immediate): Delete some bytes from a section while
relaxing.
(riscv_relax_resolve_delete_relocs): Delete the bytes for R_RISCV_DELETE
relocations from a section, at the end of _bfd_riscv_relax_section.
(_bfd_riscv_relax_call): Mark deleted bytes as R_RISCV_DELETE by reusing
R_RISCV_RELAX.
(_bfd_riscv_relax_lui): Likewise, but reuse R_RISCV_HI20 for lui, and reuse
R_RISCV_RELAX for c.lui.
(_bfd_riscv_relax_tls_le): Likewise, but resue R_RISCV_TPREL_HI20 and
R_RISCV_TPREL_ADD.
(_bfd_riscv_relax_pc): Likewise, but resue R_RISCV_PCREL_HI20 for auipc.
(_bfd_riscv_relax_align): Updated, don't need to resue relocation since
calling _riscv_relax_delete_immediate.
(_bfd_riscv_relax_delete): Removed.
(_bfd_riscv_relax_section): Set riscv_relax_delete_bytes for each relax_func,
to delete bytes immediately or later. Call riscv_relax_resolve_delete_relocs
to delete bytes for DELETE relocations from a section.
GDB Administrator [Tue, 25 Oct 2022 00:00:07 +0000 (00:00 +0000)]
Automatic date update in version.in
Andrew Burgess [Mon, 24 Oct 2022 17:04:42 +0000 (18:04 +0100)]
gdb/doc: reword description of DisassembleInfo.read_memory
While reading the documentation of DisassembleInfo.read_memory I
spotted the word 'available' in one sentence where it didn't make
sense.
Andrew Burgess [Wed, 19 Oct 2022 14:31:28 +0000 (15:31 +0100)]
sim/lm32: fix some missing function declaration warnings
In the lm32 simulator, I was seeing some warnings about missing
function declarations.
The lm32 simulator has a weird header structure, in order to pull in
the full cpu.h header we need to define WANT_CPU_LM32BF. This is done
in some files, but not in others. Critically, it's not done in some
files that then use functions declared in cpu.h
In this commit I added the missing #define so that the full cpu.h can
be included.
After doing this there are still a few functions that are used
undeclared, these functions appear to be missing any declarations at
all, so I've added some to cpu.h.
With this done all the warnings when compiling lm32 are resolved for
both gcc and clang, so I've removed the SIM_WERROR_CFLAGS line from
Makefile.in, this allows lm32 to build with -Werror.
Andrew Burgess [Wed, 19 Oct 2022 14:19:18 +0000 (15:19 +0100)]
sim/h8300: avoid self assignment
There are two places in the h8300 simulator where we assign a variable
to itself. Clang gives a warning for this, which is converted into an
error by -Werror.
Silence the warning by removing the self assignments. As these
assignments were in a complex if/then/else tree, rather than try to
adjust all the conditions, I've just replaced the self assignments
with a comment and an empty statement.
Andrew Burgess [Wed, 19 Oct 2022 14:16:53 +0000 (15:16 +0100)]
sim/aarch64: remove two unused functions
These functions are not used. Clang warns about the unused functions,
which is then converted into an error by -Werror.
Delete the unused functions.
Andrew Burgess [Wed, 19 Oct 2022 14:12:57 +0000 (15:12 +0100)]
sim/ppc: fix for operator precedence warning from clang
In the ppc simulator, clang was warning about some code like this:
busy_ptr->nr_writebacks = 1 + (PPC_ONE_BIT_SET_P(out_vmask)) ? 1 : 2;
The warning was:
operator '?:' has lower precedence than '+'; '+' will be evaluated first
I suspect that this is not the original authors intention.
PPC_ONE_BIT_SET_P is going to be 0 or 1, so if we evaluate the '+'
first, the condition will always be non-zero, so true. The whole
expression could then be simplified to just '1', which doesn't make
much sense.
I suspect the answer the author was expecting was either 2 or 3. Why
they didn't just write:
busy_ptr->nr_writebacks = (PPC_ONE_BIT_SET_P(out_vmask)) ? 2 : 3;
I have no clue, however, to keep the structure of the code unchanged,
I've updated things to:
busy_ptr->nr_writebacks = 1 + (PPC_ONE_BIT_SET_P (out_vmask) ? 1 : 2);
which silences the warning from clang, and is, I am guessing, what the
original author intended.
Andrew Burgess [Wed, 19 Oct 2022 14:07:40 +0000 (15:07 +0100)]
sim/ppc: initialize a memory buffer in all cases
In the ppc simulator's do_fstat function, which provides the fstat
call for the simulator, if the fstat is going to fail then we
currently write an uninitialized buffer into the simulated target.
In theory, I think this is fine, we also write the error status into
the simulated target, so, given that the fstat has failed, the target
shouldn't be relying on the buffer contents.
However, writing an uninitialized buffer means we might leak simulator
private data into the simulated target, which is probably a bad thing.
Plus it probably makes life easier if something consistent, like all
zeros, is written rather than random junk, which might look like a
successful call (except for the error code).
So, in this commit, I initialize the stat buffer to zero before
it is potentially used. If the stat call is not made then the buffer
will be left initialized as all zeros.
Andrew Burgess [Wed, 19 Oct 2022 14:06:10 +0000 (15:06 +0100)]
sim/ppc: don't try to print an uninitialized variable
The ppc simulator, in sim_create_inferior, tries to print the function
local entry_point variable before the variable is initialized.
In this commit, I defer the debug print line until the variable has
been initialized.
Andrew Burgess [Wed, 19 Oct 2022 14:04:14 +0000 (15:04 +0100)]
sim/sh: use fabs instead of abs
The sh simulator incorrectly uses integer abs instead of the floating
point fabs on some floating point values, fixed in this commit.
Tom de Vries [Mon, 24 Oct 2022 12:20:49 +0000 (14:20 +0200)]
[gdb] Fix rethrow exception slicing in insert_bp_location
The preferred way of rethrowing an exception is by using throw without
expression, because it avoids object slicing of the exception [1].
Fix this in insert_bp_location.
Tested on x86_64-linux.
[1] https://en.cppreference.com/w/cpp/language/throw
Approved-By: Andrew Burgess <aburgess@redhat.com>