master
713 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Simon Marchi
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41c0087ba5 |
gdb: make gdbarch_data_registry static
This variable was made static in:
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Luis Machado
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c193949e75 |
New gdbarch memory tagging hooks
We need some new gdbarch hooks to help us manipulate memory tags without having to have GDB call the target methods directly. This patch adds the following hooks: gdbarch_memtag_to_string -- Returns a printable string corresponding to the tag. gdbarch_tagged_address_p -- Checks if a particular address is protected with memory tagging. gdbarch_memtag_matches_p -- Checks if the logical tag of a pointer and the allocation tag from the address the pointer points to matches. gdbarch_set_memtags: -- Sets either the allocation tag or the logical tag for a particular value. gdbarch_get_memtag: -- Gets either the allocation tag or the logical tag for a particular value. gdbarch_memtag_granule_size -- Sets the memory tag granule size, which represents the number of bytes a particular allocation tag covers. For example, this is 16 bytes for AArch64's MTE. I've used struct value as opposed to straight CORE_ADDR so other architectures can use the infrastructure without having to rely on a particular type for addresses/pointers. Some architecture may use pointers of 16 bytes that don't fit in a CORE_ADDR, for example. gdb/ChangeLog: 2021-03-24 Luis Machado <luis.machado@linaro.org> * arch-utils.c (default_memtag_to_string, default_tagged_address_p) (default_memtag_matches_p, default_set_memtags) (default_get_memtag): New functions. * arch-utils.h (default_memtag_to_string, default_tagged_address_p) (default_memtag_matches_p, default_set_memtags) (default_get_memtag): New prototypes. * gdbarch.c: Regenerate. * gdbarch.h: Regenerate. * gdbarch.sh (memtag_to_string, tagged_address_p, memtag_matches_p) (set_memtags, get_memtag, memtag_granule_size): New gdbarch hooks. (enum memtag_type): New enum. |
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Tom Tromey
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4c5e7a930a |
Convert stap probes to create operations
This changes the stap probe code to create operations, rather than exp_elements. gdb/ChangeLog 2021-03-08 Tom Tromey <tom@tromey.com> * stap-probe.c (binop_maker_ftype): New typedef. (stap_maker_map): New global. (stap_make_binop): New function. (stap_parse_register_operand): Return operation_up. (stap_parse_single_operand, stap_parse_argument_conditionally) (stap_parse_argument_1): Likewise. (stap_parse_argument): Create operations. (stap_probe::parse_arguments): Update. (_initialize_stap_probe): Initialize stap_maker_map. * ppc-linux-tdep.c (ppc_stap_parse_special_token): Change return type. * i386-tdep.h (i386_stap_parse_special_token): Change return type. * i386-tdep.c (i386_stap_parse_special_token_triplet) (i386_stap_parse_special_token_three_arg_disp) (i386_stap_parse_special_token): Change return type. * gdbarch.sh (stap_parse_special_token): Change return type. * gdbarch.c: Rebuild. * gdbarch.h: Rebuild. * arm-linux-tdep.c (arm_stap_parse_special_token): Change return type. * aarch64-linux-tdep.c (aarch64_stap_parse_special_token): Change return type. |
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Tom Tromey
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482ddd69c5 |
Convert dtrace probes to use operations
This changes dtrace to use the new operation type. gdb/ChangeLog 2021-03-08 Tom Tromey <tom@tromey.com> * gdbarch.sh (dtrace_parse_probe_argument): Change return type. * gdbarch.h: Rebuild. * gdbarch.c: Rebuild. * dtrace-probe.c (dtrace_probe::build_arg_exprs): Update. * amd64-linux-tdep.c (amd64_dtrace_parse_probe_argument): Change return type. (amd64_dtrace_parse_probe_argument): Update. |
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Joel Brobecker
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b5b5650a49 |
Manual updates of copyright year range not covered by gdb/copyright.py
gdb/ChangeLog:
* gdbarch.sh: Update copyright year range.
gdb/doc/ChangeLog:
* gdb.texinfo, refcard.tex: Update copyright year range.
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Joel Brobecker
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3666a04883 |
Update copyright year range in all GDB files
This commits the result of running gdb/copyright.py as per our Start
of New Year procedure...
gdb/ChangeLog
Update copyright year range in copyright header of all GDB files.
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Simon Marchi
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187b041e25 |
gdb: move displaced stepping logic to gdbarch, allow starting concurrent displaced steps
Today, GDB only allows a single displaced stepping operation to happen
per inferior at a time. There is a single displaced stepping buffer per
inferior, whose address is fixed (obtained with
gdbarch_displaced_step_location), managed by infrun.c.
In the case of the AMD ROCm target [1] (in the context of which this
work has been done), it is typical to have thousands of threads (or
waves, in SMT terminology) executing the same code, hitting the same
breakpoint (possibly conditional) and needing to to displaced step it at
the same time. The limitation of only one displaced step executing at a
any given time becomes a real bottleneck.
To fix this bottleneck, we want to make it possible for threads of a
same inferior to execute multiple displaced steps in parallel. This
patch builds the foundation for that.
In essence, this patch moves the task of preparing a displaced step and
cleaning up after to gdbarch functions. This allows using different
schemes for allocating and managing displaced stepping buffers for
different platforms. The gdbarch decides how to assign a buffer to a
thread that needs to execute a displaced step.
On the ROCm target, we are able to allocate one displaced stepping
buffer per thread, so a thread will never have to wait to execute a
displaced step.
On Linux, the entry point of the executable if used as the displaced
stepping buffer, since we assume that this code won't get used after
startup. From what I saw (I checked with a binary generated against
glibc and musl), on AMD64 we have enough space there to fit two
displaced stepping buffers. A subsequent patch makes AMD64/Linux use
two buffers.
In addition to having multiple displaced stepping buffers, there is also
the idea of sharing displaced stepping buffers between threads. Two
threads doing displaced steps for the same PC could use the same buffer
at the same time. Two threads stepping over the same instruction (same
opcode) at two different PCs may also be able to share a displaced
stepping buffer. This is an idea for future patches, but the
architecture built by this patch is made to allow this.
Now, the implementation details. The main part of this patch is moving
the responsibility of preparing and finishing a displaced step to the
gdbarch. Before this patch, preparing a displaced step is driven by the
displaced_step_prepare_throw function. It does some calls to the
gdbarch to do some low-level operations, but the high-level logic is
there. The steps are roughly:
- Ask the gdbarch for the displaced step buffer location
- Save the existing bytes in the displaced step buffer
- Ask the gdbarch to copy the instruction into the displaced step buffer
- Set the pc of the thread to the beginning of the displaced step buffer
Similarly, the "fixup" phase, executed after the instruction was
successfully single-stepped, is driven by the infrun code (function
displaced_step_finish). The steps are roughly:
- Restore the original bytes in the displaced stepping buffer
- Ask the gdbarch to fixup the instruction result (adjust the target's
registers or memory to do as if the instruction had been executed in
its original location)
The displaced_step_inferior_state::step_thread field indicates which
thread (if any) is currently using the displaced stepping buffer, so it
is used by displaced_step_prepare_throw to check if the displaced
stepping buffer is free to use or not.
This patch defers the whole task of preparing and cleaning up after a
displaced step to the gdbarch. Two new main gdbarch methods are added,
with the following semantics:
- gdbarch_displaced_step_prepare: Prepare for the given thread to
execute a displaced step of the instruction located at its current PC.
Upon return, everything should be ready for GDB to resume the thread
(with either a single step or continue, as indicated by
gdbarch_displaced_step_hw_singlestep) to make it displaced step the
instruction.
- gdbarch_displaced_step_finish: Called when the thread stopped after
having started a displaced step. Verify if the instruction was
executed, if so apply any fixup required to compensate for the fact
that the instruction was executed at a different place than its
original pc. Release any resources that were allocated for this
displaced step. Upon return, everything should be ready for GDB to
resume the thread in its "normal" code path.
The displaced_step_prepare_throw function now pretty much just offloads
to gdbarch_displaced_step_prepare and the displaced_step_finish function
offloads to gdbarch_displaced_step_finish.
The gdbarch_displaced_step_location method is now unnecessary, so is
removed. Indeed, the core of GDB doesn't know how many displaced step
buffers there are nor where they are.
To keep the existing behavior for existing architectures, the logic that
was previously implemented in infrun.c for preparing and finishing a
displaced step is moved to displaced-stepping.c, to the
displaced_step_buffer class. Architectures are modified to implement
the new gdbarch methods using this class. The behavior is not expected
to change.
The other important change (which arises from the above) is that the
core of GDB no longer prevents concurrent displaced steps. Before this
patch, start_step_over walks the global step over chain and tries to
initiate a step over (whether it is in-line or displaced). It follows
these rules:
- if an in-line step is in progress (in any inferior), don't start any
other step over
- if a displaced step is in progress for an inferior, don't start
another displaced step for that inferior
After starting a displaced step for a given inferior, it won't start
another displaced step for that inferior.
In the new code, start_step_over simply tries to initiate step overs for
all the threads in the list. But because threads may be added back to
the global list as it iterates the global list, trying to initiate step
overs, start_step_over now starts by stealing the global queue into a
local queue and iterates on the local queue. In the typical case, each
thread will either:
- have initiated a displaced step and be resumed
- have been added back by the global step over queue by
displaced_step_prepare_throw, because the gdbarch will have returned
that there aren't enough resources (i.e. buffers) to initiate a
displaced step for that thread
Lastly, if start_step_over initiates an in-line step, it stops
iterating, and moves back whatever remaining threads it had in its local
step over queue to the global step over queue.
Two other gdbarch methods are added, to handle some slightly annoying
corner cases. They feel awkwardly specific to these cases, but I don't
see any way around them:
- gdbarch_displaced_step_copy_insn_closure_by_addr: in
arm_pc_is_thumb, arm-tdep.c wants to get the closure for a given
buffer address.
- gdbarch_displaced_step_restore_all_in_ptid: when a process forks
(at least on Linux), the address space is copied. If some displaced
step buffers were in use at the time of the fork, we need to restore
the original bytes in the child's address space.
These two adjustments are also made in infrun.c:
- prepare_for_detach: there may be multiple threads doing displaced
steps when we detach, so wait until all of them are done
- handle_inferior_event: when we handle a fork event for a given
thread, it's possible that other threads are doing a displaced step at
the same time. Make sure to restore the displaced step buffer
contents in the child for them.
[1] https://github.com/ROCm-Developer-Tools/ROCgdb
gdb/ChangeLog:
* displaced-stepping.h (struct
displaced_step_copy_insn_closure): Adjust comments.
(struct displaced_step_inferior_state) <step_thread,
step_gdbarch, step_closure, step_original, step_copy,
step_saved_copy>: Remove fields.
(struct displaced_step_thread_state): New.
(struct displaced_step_buffer): New.
* displaced-stepping.c (displaced_step_buffer::prepare): New.
(write_memory_ptid): Move from infrun.c.
(displaced_step_instruction_executed_successfully): New,
factored out of displaced_step_finish.
(displaced_step_buffer::finish): New.
(displaced_step_buffer::copy_insn_closure_by_addr): New.
(displaced_step_buffer::restore_in_ptid): New.
* gdbarch.sh (displaced_step_location): Remove.
(displaced_step_prepare, displaced_step_finish,
displaced_step_copy_insn_closure_by_addr,
displaced_step_restore_all_in_ptid): New.
* gdbarch.c: Re-generate.
* gdbarch.h: Re-generate.
* gdbthread.h (class thread_info) <displaced_step_state>: New
field.
(thread_step_over_chain_remove): New declaration.
(thread_step_over_chain_next): New declaration.
(thread_step_over_chain_length): New declaration.
* thread.c (thread_step_over_chain_remove): Make non-static.
(thread_step_over_chain_next): New.
(global_thread_step_over_chain_next): Use
thread_step_over_chain_next.
(thread_step_over_chain_length): New.
(global_thread_step_over_chain_enqueue): Add debug print.
(global_thread_step_over_chain_remove): Add debug print.
* infrun.h (get_displaced_step_copy_insn_closure_by_addr):
Remove.
* infrun.c (get_displaced_stepping_state): New.
(displaced_step_in_progress_any_inferior): Remove.
(displaced_step_in_progress_thread): Adjust.
(displaced_step_in_progress): Adjust.
(displaced_step_in_progress_any_thread): New.
(get_displaced_step_copy_insn_closure_by_addr): Remove.
(gdbarch_supports_displaced_stepping): Use
gdbarch_displaced_step_prepare_p.
(displaced_step_reset): Change parameter from inferior to
thread.
(displaced_step_prepare_throw): Implement using
gdbarch_displaced_step_prepare.
(write_memory_ptid): Move to displaced-step.c.
(displaced_step_restore): Remove.
(displaced_step_finish): Implement using
gdbarch_displaced_step_finish.
(start_step_over): Allow starting more than one displaced step.
(prepare_for_detach): Handle possibly multiple threads doing
displaced steps.
(handle_inferior_event): Handle possibility that fork event
happens while another thread displaced steps.
* linux-tdep.h (linux_displaced_step_prepare): New.
(linux_displaced_step_finish): New.
(linux_displaced_step_copy_insn_closure_by_addr): New.
(linux_displaced_step_restore_all_in_ptid): New.
(linux_init_abi): Add supports_displaced_step parameter.
* linux-tdep.c (struct linux_info) <disp_step_buf>: New field.
(linux_displaced_step_prepare): New.
(linux_displaced_step_finish): New.
(linux_displaced_step_copy_insn_closure_by_addr): New.
(linux_displaced_step_restore_all_in_ptid): New.
(linux_init_abi): Add supports_displaced_step parameter,
register displaced step methods if true.
(_initialize_linux_tdep): Register inferior_execd observer.
* amd64-linux-tdep.c (amd64_linux_init_abi_common): Add
supports_displaced_step parameter, adjust call to
linux_init_abi. Remove call to
set_gdbarch_displaced_step_location.
(amd64_linux_init_abi): Adjust call to
amd64_linux_init_abi_common.
(amd64_x32_linux_init_abi): Likewise.
* aarch64-linux-tdep.c (aarch64_linux_init_abi): Adjust call to
linux_init_abi. Remove call to
set_gdbarch_displaced_step_location.
* arm-linux-tdep.c (arm_linux_init_abi): Likewise.
* i386-linux-tdep.c (i386_linux_init_abi): Likewise.
* alpha-linux-tdep.c (alpha_linux_init_abi): Adjust call to
linux_init_abi.
* arc-linux-tdep.c (arc_linux_init_osabi): Likewise.
* bfin-linux-tdep.c (bfin_linux_init_abi): Likewise.
* cris-linux-tdep.c (cris_linux_init_abi): Likewise.
* csky-linux-tdep.c (csky_linux_init_abi): Likewise.
* frv-linux-tdep.c (frv_linux_init_abi): Likewise.
* hppa-linux-tdep.c (hppa_linux_init_abi): Likewise.
* ia64-linux-tdep.c (ia64_linux_init_abi): Likewise.
* m32r-linux-tdep.c (m32r_linux_init_abi): Likewise.
* m68k-linux-tdep.c (m68k_linux_init_abi): Likewise.
* microblaze-linux-tdep.c (microblaze_linux_init_abi): Likewise.
* mips-linux-tdep.c (mips_linux_init_abi): Likewise.
* mn10300-linux-tdep.c (am33_linux_init_osabi): Likewise.
* nios2-linux-tdep.c (nios2_linux_init_abi): Likewise.
* or1k-linux-tdep.c (or1k_linux_init_abi): Likewise.
* riscv-linux-tdep.c (riscv_linux_init_abi): Likewise.
* s390-linux-tdep.c (s390_linux_init_abi_any): Likewise.
* sh-linux-tdep.c (sh_linux_init_abi): Likewise.
* sparc-linux-tdep.c (sparc32_linux_init_abi): Likewise.
* sparc64-linux-tdep.c (sparc64_linux_init_abi): Likewise.
* tic6x-linux-tdep.c (tic6x_uclinux_init_abi): Likewise.
* tilegx-linux-tdep.c (tilegx_linux_init_abi): Likewise.
* xtensa-linux-tdep.c (xtensa_linux_init_abi): Likewise.
* ppc-linux-tdep.c (ppc_linux_init_abi): Adjust call to
linux_init_abi. Remove call to
set_gdbarch_displaced_step_location.
* arm-tdep.c (arm_pc_is_thumb): Call
gdbarch_displaced_step_copy_insn_closure_by_addr instead of
get_displaced_step_copy_insn_closure_by_addr.
* rs6000-aix-tdep.c (rs6000_aix_init_osabi): Adjust calls to
clear gdbarch methods.
* rs6000-tdep.c (struct ppc_inferior_data): New structure.
(get_ppc_per_inferior): New function.
(ppc_displaced_step_prepare): New function.
(ppc_displaced_step_finish): New function.
(ppc_displaced_step_restore_all_in_ptid): New function.
(rs6000_gdbarch_init): Register new gdbarch methods.
* s390-tdep.c (s390_gdbarch_init): Don't call
set_gdbarch_displaced_step_location, set new gdbarch methods.
gdb/testsuite/ChangeLog:
* gdb.arch/amd64-disp-step-avx.exp: Adjust pattern.
* gdb.threads/forking-threads-plus-breakpoint.exp: Likewise.
* gdb.threads/non-stop-fair-events.exp: Likewise.
Change-Id: I387cd235a442d0620ec43608fd3dc0097fcbf8c8
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Simon Marchi
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c7acb87bc6 |
gdb: move displaced stepping types to displaced-stepping.{h,c}
Move displaced-stepping related stuff unchanged to displaced-stepping.h and displaced-stepping.c. This helps make the following patch a bit smaller and easier to read. gdb/ChangeLog: * Makefile.in (COMMON_SFILES): Add displaced-stepping.c. * aarch64-tdep.h: Include displaced-stepping.h. * displaced-stepping.h (struct displaced_step_copy_insn_closure): Move here. (displaced_step_copy_insn_closure_up): Move here. (struct buf_displaced_step_copy_insn_closure): Move here. (struct displaced_step_inferior_state): Move here. (debug_displaced): Move here. (displaced_debug_printf_1): Move here. (displaced_debug_printf): Move here. * displaced-stepping.c: New file. * gdbarch.sh: Include displaced-stepping.h in gdbarch.h. * gdbarch.h: Re-generate. * inferior.h: Include displaced-stepping.h. * infrun.h (debug_displaced): Move to displaced-stepping.h. (displaced_debug_printf_1): Likewise. (displaced_debug_printf): Likewise. (struct displaced_step_copy_insn_closure): Likewise. (displaced_step_copy_insn_closure_up): Likewise. (struct buf_displaced_step_copy_insn_closure): Likewise. (struct displaced_step_inferior_state): Likewise. * infrun.c (show_debug_displaced): Move to displaced-stepping.c. (displaced_debug_printf_1): Likewise. (displaced_step_copy_insn_closure::~displaced_step_copy_insn_closure): Likewise. (_initialize_infrun): Don't register "set/show debug displaced". Change-Id: I29935f5959b80425370630a45148fc06cd4227ca |
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Simon Marchi
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1152d984bb |
gdb: rename displaced_step_closure to displaced_step_copy_insn_closure
Since we're going to introduce other "displaced step" functions and another kind of displaced step closure, make it clear that this is the return type of the gdbarch_displaced_step_copy_insn function. gdb/ChangeLog: * infrun.h (get_displaced_step_closure_by_addr): Rename to... (get_displaced_step_copy_insn_closure_by_addr): ... this. Update all users. (displaced_step_closure): Rename to... (displaced_step_copy_insn_closure): ... this. Update all users. (displaced_step_closure_up): Rename to... (displaced_step_copy_insn_closure_up). ... this. Update all users. (buf_displaced_step_closure): Rename to... (buf_displaced_step_copy_insn_closure): ... this. Update all users. * infrun.c (get_displaced_step_closure_by_addr): Rename to... (get_displaced_step_copy_insn_closure_by_addr): ... this. Update all users. * aarch64-tdep.c (aarch64_displaced_step_closure): Rename to... (aarch64_displaced_step_copy_insn_closure): ... this. Update all users. * amd64-tdep.c (amd64_displaced_step_closure): Rename to... (amd64_displaced_step_copy_insn_closure): ... this. Update all users. * arm-tdep.h (arm_displaced_step_closure): Rename to... (arm_displaced_step_copy_insn_closure): ... this. Update all users. * i386-tdep.h (i386_displaced_step_closure): Rename to... (i386_displaced_step_copy_insn_closure): ... this. Update all users. * rs6000-tdep.c (ppc_displaced_step_closure): Rename to... (ppc_displaced_step_copy_insn_closure): ... this. Update all users. * s390-tdep.c (s390_displaced_step_closure): Rename to... (s390_displaced_step_copy_insn_closure): ... this. Update all users. * gdbarch.h: Re-generate. * gdbarch.c: Re-generate. Change-Id: I11f56dbcd4c3532fb195a08ba93bccf1d12a03c8 |
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Simon Marchi
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70125a45e4 |
gdb: remove other parameter in read_core_file_mappings parameter
The `void *other` parameter in read_core_file_mappings' loop_cb parameter is never used, remove it. gdb/ChangeLog: * gdbarch.sh (read_core_file_mappings): Remove `other` parameter in `loop_cb` parameter. * gdbarch.c: Re-generate. * gdbarch.h: Re-generate. * arch-utils.c (default_read_core_file_mappings): Remove `other` parameter. * arch-utils.h (default_read_core_file_mappings): Likewise. * corelow.c (core_target::build_file_mappings): Likewise. * linux-tdep.c (linux_read_core_file_mappings): Likewise. (linux_core_info_proc_mappings): Likewise. Change-Id: I6f408b4962b61b8a603642a844772b3026625523 |
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Simon Marchi
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dda83cd783 |
gdb, gdbserver, gdbsupport: fix leading space vs tabs issues
Many spots incorrectly use only spaces for indentation (for example, there are a lot of spots in ada-lang.c). I've always found it awkward when I needed to edit one of these spots: do I keep the original wrong indentation, or do I fix it? What if the lines around it are also wrong, do I fix them too? I probably don't want to fix them in the same patch, to avoid adding noise to my patch. So I propose to fix as much as possible once and for all (hopefully). One typical counter argument for this is that it makes code archeology more difficult, because git-blame will show this commit as the last change for these lines. My counter counter argument is: when git-blaming, you often need to do "blame the file at the parent commit" anyway, to go past some other refactor that touched the line you are interested in, but is not the change you are looking for. So you already need a somewhat efficient way to do this. Using some interactive tool, rather than plain git-blame, makes this trivial. For example, I use "tig blame <file>", where going back past the commit that changed the currently selected line is one keystroke. It looks like Magit in Emacs does it too (though I've never used it). Web viewers of Github and Gitlab do it too. My point is that it won't really make archeology more difficult. The other typical counter argument is that it will cause conflicts with existing patches. That's true... but it's a one time cost, and those are not conflicts that are difficult to resolve. I have also tried "git rebase --ignore-whitespace", it seems to work well. Although that will re-introduce the faulty indentation, so one needs to take care of fixing the indentation in the patch after that (which is easy). gdb/ChangeLog: * aarch64-linux-tdep.c: Fix indentation. * aarch64-ravenscar-thread.c: Fix indentation. * aarch64-tdep.c: Fix indentation. * aarch64-tdep.h: Fix indentation. * ada-lang.c: Fix indentation. * ada-lang.h: Fix indentation. * ada-tasks.c: Fix indentation. * ada-typeprint.c: Fix indentation. * ada-valprint.c: Fix indentation. * ada-varobj.c: Fix indentation. * addrmap.c: Fix indentation. * addrmap.h: Fix indentation. * agent.c: Fix indentation. * aix-thread.c: Fix indentation. * alpha-bsd-nat.c: Fix indentation. * alpha-linux-tdep.c: Fix indentation. * alpha-mdebug-tdep.c: Fix indentation. * alpha-nbsd-tdep.c: Fix indentation. * alpha-obsd-tdep.c: Fix indentation. * alpha-tdep.c: Fix indentation. * amd64-bsd-nat.c: Fix indentation. * amd64-darwin-tdep.c: Fix indentation. * amd64-linux-nat.c: Fix indentation. * amd64-linux-tdep.c: Fix indentation. * amd64-nat.c: Fix indentation. * amd64-obsd-tdep.c: Fix indentation. * amd64-tdep.c: Fix indentation. * amd64-windows-tdep.c: Fix indentation. * annotate.c: Fix indentation. * arc-tdep.c: Fix indentation. * arch-utils.c: Fix indentation. * arch/arm-get-next-pcs.c: Fix indentation. * arch/arm.c: Fix indentation. * arm-linux-nat.c: Fix indentation. * arm-linux-tdep.c: Fix indentation. * arm-nbsd-tdep.c: Fix indentation. * arm-pikeos-tdep.c: Fix indentation. * arm-tdep.c: Fix indentation. * arm-tdep.h: Fix indentation. * arm-wince-tdep.c: Fix indentation. * auto-load.c: Fix indentation. * auxv.c: Fix indentation. * avr-tdep.c: Fix indentation. * ax-gdb.c: Fix indentation. * ax-general.c: Fix indentation. * bfin-linux-tdep.c: Fix indentation. * block.c: Fix indentation. * block.h: Fix indentation. * blockframe.c: Fix indentation. * bpf-tdep.c: Fix indentation. * break-catch-sig.c: Fix indentation. * break-catch-syscall.c: Fix indentation. * break-catch-throw.c: Fix indentation. * breakpoint.c: Fix indentation. * breakpoint.h: Fix indentation. * bsd-uthread.c: Fix indentation. * btrace.c: Fix indentation. * build-id.c: Fix indentation. * buildsym-legacy.h: Fix indentation. * buildsym.c: Fix indentation. * c-typeprint.c: Fix indentation. * c-valprint.c: Fix indentation. * c-varobj.c: Fix indentation. * charset.c: Fix indentation. * cli/cli-cmds.c: Fix indentation. * cli/cli-decode.c: Fix indentation. * cli/cli-decode.h: Fix indentation. * cli/cli-script.c: Fix indentation. * cli/cli-setshow.c: Fix indentation. * coff-pe-read.c: Fix indentation. * coffread.c: Fix indentation. * compile/compile-cplus-types.c: Fix indentation. * compile/compile-object-load.c: Fix indentation. * compile/compile-object-run.c: Fix indentation. * completer.c: Fix indentation. * corefile.c: Fix indentation. * corelow.c: Fix indentation. * cp-abi.h: Fix indentation. * cp-namespace.c: Fix indentation. * cp-support.c: Fix indentation. * cp-valprint.c: Fix indentation. * cris-linux-tdep.c: Fix indentation. * cris-tdep.c: Fix indentation. * darwin-nat-info.c: Fix indentation. * darwin-nat.c: Fix indentation. * darwin-nat.h: Fix indentation. * dbxread.c: Fix indentation. * dcache.c: Fix indentation. * disasm.c: Fix indentation. * dtrace-probe.c: Fix indentation. * dwarf2/abbrev.c: Fix indentation. * dwarf2/attribute.c: Fix indentation. * dwarf2/expr.c: Fix indentation. * dwarf2/frame.c: Fix indentation. * dwarf2/index-cache.c: Fix indentation. * dwarf2/index-write.c: Fix indentation. * dwarf2/line-header.c: Fix indentation. * dwarf2/loc.c: Fix indentation. * dwarf2/macro.c: Fix indentation. * dwarf2/read.c: Fix indentation. * dwarf2/read.h: Fix indentation. * elfread.c: Fix indentation. * eval.c: Fix indentation. * event-top.c: Fix indentation. * exec.c: Fix indentation. * exec.h: Fix indentation. * expprint.c: Fix indentation. * f-lang.c: Fix indentation. * f-typeprint.c: Fix indentation. * f-valprint.c: Fix indentation. * fbsd-nat.c: Fix indentation. * fbsd-tdep.c: Fix indentation. * findvar.c: Fix indentation. * fork-child.c: Fix indentation. * frame-unwind.c: Fix indentation. * frame-unwind.h: Fix indentation. * frame.c: Fix indentation. * frv-linux-tdep.c: Fix indentation. * frv-tdep.c: Fix indentation. * frv-tdep.h: Fix indentation. * ft32-tdep.c: Fix indentation. * gcore.c: Fix indentation. * gdb_bfd.c: Fix indentation. * gdbarch.sh: Fix indentation. * gdbarch.c: Re-generate * gdbarch.h: Re-generate. * gdbcore.h: Fix indentation. * gdbthread.h: Fix indentation. * gdbtypes.c: Fix indentation. * gdbtypes.h: Fix indentation. * glibc-tdep.c: Fix indentation. * gnu-nat.c: Fix indentation. * gnu-nat.h: Fix indentation. * gnu-v2-abi.c: Fix indentation. * gnu-v3-abi.c: Fix indentation. * go32-nat.c: Fix indentation. * guile/guile-internal.h: Fix indentation. * guile/scm-cmd.c: Fix indentation. * guile/scm-frame.c: Fix indentation. * guile/scm-iterator.c: Fix indentation. * guile/scm-math.c: Fix indentation. * guile/scm-ports.c: Fix indentation. * guile/scm-pretty-print.c: Fix indentation. * guile/scm-value.c: Fix indentation. * h8300-tdep.c: Fix indentation. * hppa-linux-nat.c: Fix indentation. * hppa-linux-tdep.c: Fix indentation. * hppa-nbsd-nat.c: Fix indentation. * hppa-nbsd-tdep.c: Fix indentation. * hppa-obsd-nat.c: Fix indentation. * hppa-tdep.c: Fix indentation. * hppa-tdep.h: Fix indentation. * i386-bsd-nat.c: Fix indentation. * i386-darwin-nat.c: Fix indentation. * i386-darwin-tdep.c: Fix indentation. * i386-dicos-tdep.c: Fix indentation. * i386-gnu-nat.c: Fix indentation. * i386-linux-nat.c: Fix indentation. * i386-linux-tdep.c: Fix indentation. * i386-nto-tdep.c: Fix indentation. * i386-obsd-tdep.c: Fix indentation. * i386-sol2-nat.c: Fix indentation. * i386-tdep.c: Fix indentation. * i386-tdep.h: Fix indentation. * i386-windows-tdep.c: Fix indentation. * i387-tdep.c: Fix indentation. * i387-tdep.h: Fix indentation. * ia64-libunwind-tdep.c: Fix indentation. * ia64-libunwind-tdep.h: Fix indentation. * ia64-linux-nat.c: Fix indentation. * ia64-linux-tdep.c: Fix indentation. * ia64-tdep.c: Fix indentation. * ia64-tdep.h: Fix indentation. * ia64-vms-tdep.c: Fix indentation. * infcall.c: Fix indentation. * infcmd.c: Fix indentation. * inferior.c: Fix indentation. * infrun.c: Fix indentation. * iq2000-tdep.c: Fix indentation. * language.c: Fix indentation. * linespec.c: Fix indentation. * linux-fork.c: Fix indentation. * linux-nat.c: Fix indentation. * linux-tdep.c: Fix indentation. * linux-thread-db.c: Fix indentation. * lm32-tdep.c: Fix indentation. * m2-lang.c: Fix indentation. * m2-typeprint.c: Fix indentation. * m2-valprint.c: Fix indentation. * m32c-tdep.c: Fix indentation. * m32r-linux-tdep.c: Fix indentation. * m32r-tdep.c: Fix indentation. * m68hc11-tdep.c: Fix indentation. * m68k-bsd-nat.c: Fix indentation. * m68k-linux-nat.c: Fix indentation. * m68k-linux-tdep.c: Fix indentation. * m68k-tdep.c: Fix indentation. * machoread.c: Fix indentation. * macrocmd.c: Fix indentation. * macroexp.c: Fix indentation. * macroscope.c: Fix indentation. * macrotab.c: Fix indentation. * macrotab.h: Fix indentation. * main.c: Fix indentation. * mdebugread.c: Fix indentation. * mep-tdep.c: Fix indentation. * mi/mi-cmd-catch.c: Fix indentation. * mi/mi-cmd-disas.c: Fix indentation. * mi/mi-cmd-env.c: Fix indentation. * mi/mi-cmd-stack.c: Fix indentation. * mi/mi-cmd-var.c: Fix indentation. * mi/mi-cmds.c: Fix indentation. * mi/mi-main.c: Fix indentation. * mi/mi-parse.c: Fix indentation. * microblaze-tdep.c: Fix indentation. * minidebug.c: Fix indentation. * minsyms.c: Fix indentation. * mips-linux-nat.c: Fix indentation. * mips-linux-tdep.c: Fix indentation. * mips-nbsd-tdep.c: Fix indentation. * mips-tdep.c: Fix indentation. * mn10300-linux-tdep.c: Fix indentation. * mn10300-tdep.c: Fix indentation. * moxie-tdep.c: Fix indentation. * msp430-tdep.c: Fix indentation. * namespace.h: Fix indentation. * nat/fork-inferior.c: Fix indentation. * nat/gdb_ptrace.h: Fix indentation. * nat/linux-namespaces.c: Fix indentation. * nat/linux-osdata.c: Fix indentation. * nat/netbsd-nat.c: Fix indentation. * nat/x86-dregs.c: Fix indentation. * nbsd-nat.c: Fix indentation. * nbsd-tdep.c: Fix indentation. * nios2-linux-tdep.c: Fix indentation. * nios2-tdep.c: Fix indentation. * nto-procfs.c: Fix indentation. * nto-tdep.c: Fix indentation. * objfiles.c: Fix indentation. * objfiles.h: Fix indentation. * opencl-lang.c: Fix indentation. * or1k-tdep.c: Fix indentation. * osabi.c: Fix indentation. * osabi.h: Fix indentation. * osdata.c: Fix indentation. * p-lang.c: Fix indentation. * p-typeprint.c: Fix indentation. * p-valprint.c: Fix indentation. * parse.c: Fix indentation. * ppc-linux-nat.c: Fix indentation. * ppc-linux-tdep.c: Fix indentation. * ppc-nbsd-nat.c: Fix indentation. * ppc-nbsd-tdep.c: Fix indentation. * ppc-obsd-nat.c: Fix indentation. * ppc-ravenscar-thread.c: Fix indentation. * ppc-sysv-tdep.c: Fix indentation. * ppc64-tdep.c: Fix indentation. * printcmd.c: Fix indentation. * proc-api.c: Fix indentation. * producer.c: Fix indentation. * producer.h: Fix indentation. * prologue-value.c: Fix indentation. * prologue-value.h: Fix indentation. * psymtab.c: Fix indentation. * python/py-arch.c: Fix indentation. * python/py-bpevent.c: Fix indentation. * python/py-event.c: Fix indentation. * python/py-event.h: Fix indentation. * python/py-finishbreakpoint.c: Fix indentation. * python/py-frame.c: Fix indentation. * python/py-framefilter.c: Fix indentation. * python/py-inferior.c: Fix indentation. * python/py-infthread.c: Fix indentation. * python/py-objfile.c: Fix indentation. * python/py-prettyprint.c: Fix indentation. * python/py-registers.c: Fix indentation. * python/py-signalevent.c: Fix indentation. * python/py-stopevent.c: Fix indentation. * python/py-stopevent.h: Fix indentation. * python/py-threadevent.c: Fix indentation. * python/py-tui.c: Fix indentation. * python/py-unwind.c: Fix indentation. * python/py-value.c: Fix indentation. * python/py-xmethods.c: Fix indentation. * python/python-internal.h: Fix indentation. * python/python.c: Fix indentation. * ravenscar-thread.c: Fix indentation. * record-btrace.c: Fix indentation. * record-full.c: Fix indentation. * record.c: Fix indentation. * reggroups.c: Fix indentation. * regset.h: Fix indentation. * remote-fileio.c: Fix indentation. * remote.c: Fix indentation. * reverse.c: Fix indentation. * riscv-linux-tdep.c: Fix indentation. * riscv-ravenscar-thread.c: Fix indentation. * riscv-tdep.c: Fix indentation. * rl78-tdep.c: Fix indentation. * rs6000-aix-tdep.c: Fix indentation. * rs6000-lynx178-tdep.c: Fix indentation. * rs6000-nat.c: Fix indentation. * rs6000-tdep.c: Fix indentation. * rust-lang.c: Fix indentation. * rx-tdep.c: Fix indentation. * s12z-tdep.c: Fix indentation. * s390-linux-tdep.c: Fix indentation. * score-tdep.c: Fix indentation. * ser-base.c: Fix indentation. * ser-mingw.c: Fix indentation. * ser-uds.c: Fix indentation. * ser-unix.c: Fix indentation. * serial.c: Fix indentation. * sh-linux-tdep.c: Fix indentation. * sh-nbsd-tdep.c: Fix indentation. * sh-tdep.c: Fix indentation. * skip.c: Fix indentation. * sol-thread.c: Fix indentation. * solib-aix.c: Fix indentation. * solib-darwin.c: Fix indentation. * solib-frv.c: Fix indentation. * solib-svr4.c: Fix indentation. * solib.c: Fix indentation. * source.c: Fix indentation. * sparc-linux-tdep.c: Fix indentation. * sparc-nbsd-tdep.c: Fix indentation. * sparc-obsd-tdep.c: Fix indentation. * sparc-ravenscar-thread.c: Fix indentation. * sparc-tdep.c: Fix indentation. * sparc64-linux-tdep.c: Fix indentation. * sparc64-nbsd-tdep.c: Fix indentation. * sparc64-obsd-tdep.c: Fix indentation. * sparc64-tdep.c: Fix indentation. * stabsread.c: Fix indentation. * stack.c: Fix indentation. * stap-probe.c: Fix indentation. * stubs/ia64vms-stub.c: Fix indentation. * stubs/m32r-stub.c: Fix indentation. * stubs/m68k-stub.c: Fix indentation. * stubs/sh-stub.c: Fix indentation. * stubs/sparc-stub.c: Fix indentation. * symfile-mem.c: Fix indentation. * symfile.c: Fix indentation. * symfile.h: Fix indentation. * symmisc.c: Fix indentation. * symtab.c: Fix indentation. * symtab.h: Fix indentation. * target-float.c: Fix indentation. * target.c: Fix indentation. * target.h: Fix indentation. * tic6x-tdep.c: Fix indentation. * tilegx-linux-tdep.c: Fix indentation. * tilegx-tdep.c: Fix indentation. * top.c: Fix indentation. * tracefile-tfile.c: Fix indentation. * tracepoint.c: Fix indentation. * tui/tui-disasm.c: Fix indentation. * tui/tui-io.c: Fix indentation. * tui/tui-regs.c: Fix indentation. * tui/tui-stack.c: Fix indentation. * tui/tui-win.c: Fix indentation. * tui/tui-winsource.c: Fix indentation. * tui/tui.c: Fix indentation. * typeprint.c: Fix indentation. * ui-out.h: Fix indentation. * unittests/copy_bitwise-selftests.c: Fix indentation. * unittests/memory-map-selftests.c: Fix indentation. * utils.c: Fix indentation. * v850-tdep.c: Fix indentation. * valarith.c: Fix indentation. * valops.c: Fix indentation. * valprint.c: Fix indentation. * valprint.h: Fix indentation. * value.c: Fix indentation. * value.h: Fix indentation. * varobj.c: Fix indentation. * vax-tdep.c: Fix indentation. * windows-nat.c: Fix indentation. * windows-tdep.c: Fix indentation. * xcoffread.c: Fix indentation. * xml-syscall.c: Fix indentation. * xml-tdesc.c: Fix indentation. * xstormy16-tdep.c: Fix indentation. * xtensa-config.c: Fix indentation. * xtensa-linux-nat.c: Fix indentation. * xtensa-linux-tdep.c: Fix indentation. * xtensa-tdep.c: Fix indentation. gdbserver/ChangeLog: * ax.cc: Fix indentation. * dll.cc: Fix indentation. * inferiors.h: Fix indentation. * linux-low.cc: Fix indentation. * linux-nios2-low.cc: Fix indentation. * linux-ppc-ipa.cc: Fix indentation. * linux-ppc-low.cc: Fix indentation. * linux-x86-low.cc: Fix indentation. * linux-xtensa-low.cc: Fix indentation. * regcache.cc: Fix indentation. * server.cc: Fix indentation. * tracepoint.cc: Fix indentation. gdbsupport/ChangeLog: * common-exceptions.h: Fix indentation. * event-loop.cc: Fix indentation. * fileio.cc: Fix indentation. * filestuff.cc: Fix indentation. * gdb-dlfcn.cc: Fix indentation. * gdb_string_view.h: Fix indentation. * job-control.cc: Fix indentation. * signals.cc: Fix indentation. Change-Id: I4bad7ae6be0fbe14168b8ebafb98ffe14964a695 |
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Simon Marchi
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58103c3313 |
gdb: fix documentation of gdbarch_displaced_step_hw_singlestep
The last commit missed updating the doc of gdbarch_displaced_step_hw_singlestep to avoid mentioning the removed parameter, this one fixes it. gdb/ChangeLog: * gdbarch.sh (displaced_step_hw_singlestep): Adjust documentation. * gdbarch.h: Re-generate. Change-Id: I33675d9a6c253443eee707e8285d16615ce20aaa |
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Simon Marchi
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40a5376690 |
gdb: remove parameter of gdbarch_displaced_step_hw_singlestep
I noticed that the closure parameter of gdbarch_displaced_step_hw_singlestep is never used by any implementation of the method, so this patch removes it. gdb/ChangeLog: * gdbarch.sh (displaced_step_hw_singlestep): Remove closure parameter. * aarch64-tdep.c (aarch64_displaced_step_hw_singlestep): Likewise. * aarch64-tdep.h (aarch64_displaced_step_hw_singlestep): Likewise. * arch-utils.c (default_displaced_step_hw_singlestep): Likewise. * arch-utils.h (default_displaced_step_hw_singlestep): Likewise. * rs6000-tdep.c (ppc_displaced_step_hw_singlestep): Likewise. * s390-tdep.c (s390_displaced_step_hw_singlestep): Likewise. * gdbarch.c: Re-generate. * gdbarch.h: Re-generate. * infrun.c (resume_1): Adjust. Change-Id: I7354f0b22afc2692ebff0cd700a462db8f389fc1 |
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Simon Marchi
|
c21f37a889 |
gdb: make gdbarch_make_corefile_notes return a unique ptr
This patch starts by making the gdbarch_make_corefile_notes function return a gdb::unique_xmalloc_ptr<char> and takes care of the fallouts, mostly in linux-tdep.c and fbsd-tdep.c. The difficulty in these files is that they use the BFD API for writing core files, where you pass in a pointer to a malloc-ed buffer (or NULL in the beginning), it re-allocs it if needed, and returns you the possibly updated pointer. I therefore used this pattern everywhere: note_data.reset (elfcore_write_note (obfd, note_data.release (), ...) This hands over the ownership of note_data to the BFD function for the duration of the call, and then puts its back in note_data right after the call. gdb/ChangeLog: * gdbarch.sh (make_corefile_notes): Return unique pointer. * gdbarch.c: Re-generate. * gdbarch.h: Re-generate. * gcore.c (write_gcore_file_1): Adjust. * fbsd-tdep.c (struct fbsd_collect_regset_section_cb_data): Add constructor. <note_data>: Change type to unique pointer. <abort_iteration>: Change type to bool. (fbsd_collect_regset_section_cb): Adjust to unique pointer. (fbsd_collect_thread_registers): Return void, adjust. (struct fbsd_corefile_thread_data): Add construtor. <note_data>: Change type to unique pointer. (fbsd_corefile_thread): Adjust. (fbsd_make_corefile_notes): Return unique pointer, adjust. * linux-tdep.c (linux_make_mappings_corefile_notes): Change type to unique pointer, adjust. (struct linux_collect_regset_section_cb_data): Add constructor. <note_data>: Change type to unique pointer. <abort_iteration>: Change type to bool. (linux_collect_thread_registers): Return void, adjust. (struct linux_corefile_thread_data): Add constructor. <note_data>: Change type to unique pointer. (linux_corefile_thread): Adjust. (linux_make_corefile_notes): Return unique pointer, adjust. Change-Id: I1e03476bb47b87c6acb3e12204d193f38cc4e02b |
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Simon Marchi
|
07fbbd0138 |
gdb: make gdbarch_displaced_step_hw_singlestep return bool
Replace the int-used-as-a-bool with a bool. gdb/ChangeLog: * gdbarch.sh (displaced_step_hw_singlestep): Return bool. * gdbarch.c: Re-generate. * gdbarch.h: Re-generate. * aarch64-tdep.c (aarch64_displaced_step_hw_singlestep): Return bool. * aarch64-tdep.h (aarch64_displaced_step_hw_singlestep): Likewise. * arch-utils.h (default_displaced_step_hw_singlestep): Likewise. * arch-utils.c (default_displaced_step_hw_singlestep): Likewise. * rs6000-tdep.c (ppc_displaced_step_hw_singlestep): Likewise. * s390-tdep.c (s390_displaced_step_hw_singlestep): Likewise. Change-Id: I76a78366dc5c0afb03f8f4bddf9f4e8d68fe3114 |
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Simon Marchi
|
3953519365 |
gdb: make gdbarch predicates return bool
gdbarch predicates (functions suffixed _p to check whether a gdbarch implements a given method) currently return int. Make them return bool. There is no expected behavior change. gdb/ChangeLog: * gdbarch.sh: Make generated predicates return bool. * gdbarch.c: Re-generate. * gdbarch.h: Re-generate. Change-Id: Ie7ebc1acae62df83da9085ba69327fca551c5a30 |
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Pedro Alves
|
314ad88df6 |
Use type_instance_flags more throughout
A later patch in this series will rewrite enum_flags fixing some API holes. That would cause build failures around code using type_instance_flags. Or rather, that should be using it, but wasn't. This patch fixes it by using type_instance_flags throughout instead of plain integers. Note that we can't make the seemingly obvious change to struct type::instance_flags: - unsigned instance_flags : 9; + ENUM_BITFIELD (type_instance_flag_value) instance_flags : 9; Because G++ complains then that 9 bits isn't sufficient for holding all values of type_instance_flag_value. So the patch adds an type::instance_flags() method, which takes care of casting appropriately, and adds a separate type::set_instance_flags method, following the pattern of the ongoing TYPE_XXX macro elimination. This converts uses of TYPE_INSTANCE_FLAGS to type::instance_flags() in the places where the code was already being touched, but there are still many references to the TYPE_INSTANCE_FLAGS macro left behind. Those could/should be fully replaced at some point. gdb/ChangeLog: * avr-tdep.c (avr_address_class_type_flags): Return type_instance_flags. (avr_address_class_type_flags_to_name): Take a type_instance_flags. (avr_address_class_name_to_type_flags): Return bool and take a type_instance_flags. * d-lang.c (build_d_types): Use type::set_instance_flags. * ft32-tdep.c (ft32_address_class_type_flags): Return type_instance_flags. (ft32_address_class_type_flags_to_name): Take a type_instance_flags. (ft32_address_class_name_to_type_flags): Return bool and take a type_instance_flags. (ft32_gdbarch_init): Use type::set_instance_flags. * eval.c (fake_method::fake_method): Use type::set_instance_flags. * gdbarch.h, gdbarch.c: Regenerate. * gdbarch.sh (address_class_type_flags): Use type_instance_flags. (address_class_name_to_type_flags): Use type_instance_flags and bool. * gdbtypes.c (address_space_name_to_int) (address_space_int_to_name, make_qualified_type): Use type_instance_flags. (make_qualified_type): Use type_instance_flags and type::set_instance_flags. (make_type_with_address_space, make_cv_type, make_vector_type) (check_typedef): Use type_instance_flags. (recursive_dump_type): Cast type_instance_flags to unsigned for printing. (copy_type_recursive): Use type::set_instance_flags. (gdbtypes_post_init): Use type::set_instance_flags. * gdbtypes.h (struct type) <instance_flags>: Rename to ... <m_instance_flags>: ... this. <instance_flags, set_instance_flags>: New methods. (TYPE_INSTANCE_FLAGS): Use the instance_flags method. (SET_TYPE_INSTANCE_FLAGS): New. (address_space_name_to_int, address_space_int_to_name) (make_type_with_address_space): Pass flags using type_instance_flags instead of int. * stabsread.c (cleanup_undefined_types_noname): Use type::set_instance_flags. * s390-tdep.c (s390_address_class_type_flags): Return type_instance_flags. (s390_address_class_type_flags_to_name): Take a type_instance_flags. (s390_address_class_name_to_type_flags): Return bool and take a type_instance_flags. * type-stack.c (type_stack::follow_types): Use type_instance_flags. * dwarf2/read.c (read_tag_pointer_type): Use type_instance_flags. |
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Felix Willgerodt
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2a67f09db1 |
Add bfloat16 support for AVX512 register view.
This adds support for the bfloat16 datatype, which can be seen as a short version of FP32, skipping the least significant 16 bits of the mantissa. Since the datatype is currently only supported by the AVX512 registers, the printing of bfloat16 values is only supported for xmm, ymm and zmm registers. gdb/ChangeLog: 2020-09-11 Moritz Riesterer <moritz.riesterer@intel.com> Felix Willgerodt <Felix.Willgerodt@intel.com> * gdbarch.sh: Added bfloat16 type. * gdbarch.c: Regenerated. * gdbarch.h: Regenerated. * gdbtypes.c (floatformats_bfloat16): New struct. (gdbtypes_post_init): Add builtin_bfloat16. * gdbtypes.h (struct builtin_type) <builtin_bfloat16>: New member. (floatformats_bfloat16): New struct. * i386-tdep.c (i386_zmm_type): Add field "v32_bfloat16" (i386_ymm_type): Add field "v16_bfloat16" (i386_gdbarch_init): Add set_gdbarch_bfloat16_format. * target-descriptions.c (make_gdb_type): Add case TDESC_TYPE_BFLOAT16. * gdbsupport/tdesc.cc (tdesc_predefined_types): New member bfloat16. * gdbsupport/tdesc.h (tdesc_type_kind): New member TDESC_TYPE_BFLOAT16. * features/i386/64bit-avx512.xml: Add bfloat16 type. * features/i386/64bit-avx512.c: Regenerated. * features/i386/64bit-sse.xml: Add bfloat16 type. * features/i386/64bit-sse.c: Regenerated. gdb/testsuite/ChangeLog: 2020-09-11 Moritz Riesterer <moritz.riesterer@intel.com> Felix Willgerodt <Felix.Willgerodt@intel.com> * x86-avx512bf16.c: New file. * x86-avx512bf16.exp: Likewise. * lib/gdb.exp (skip_avx512bf16_tests): New function. |
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Kevin Buettner
|
7e183d2736 |
Add new gdbarch method, read_core_file_mappings
The new gdbarch method, read_core_file_mappings, will be used for reading file-backed mappings from a core file. It'll be used for two purposes: 1) to construct a table of file-backed mappings in corelow.c, and 2) for display of core file mappings. For Linux, I tried a different approach in which knowledge of the note format was placed directly in corelow.c. This seemed okay at first; it was only one note format and the note format was fairly simple. After looking at FreeBSD's note/mapping reading code, I concluded that it's best to leave architecture specific details for decoding the note in (architecture specific) tdep files. With regard to display of core file mappings, I experimented with placing the mappings display code in corelow.c. It has access to the file-backed mappings which were read in when the core file was loaded. And, better, still common code could be used for all architectures. But, again, the FreeBSD mapping code convinced me that this was not the best approach since it has even more mapping info than Linux. Display code which would work well for Linux will leave out mappings as well as protection info for mappings. So, for these reasons, I'm introducing a new gdbarch method for reading core file mappings. gdb/ChangeLog: * arch-utils.c (default_read_core_file_mappings): New function. * arch-utils.c (default_read_core_file_mappings): Declare. * gdbarch.sh (read_core_file_mappings): New gdbarch method. * gdbarch.h, gdbarch.c: Regenerate. |
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John Baldwin
|
4cec0c6689 |
Retire the now-unused gdbarch handle_segmentation_fault hook.
* gdbarch.c: Regenerate. * gdbarch.h: Regenerate. * gdbarch.sh (handle_segmentation_fault): Remove method. * infrun.c (handle_segmentation_fault): Remove. (print_signal_received_reason): Remove call to handle_segmentation_fault. |
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|
John Baldwin
|
272bb05cc5 |
Add a new gdbarch hook to report additional signal information.
This is a more general version of the existing handle_segmentation_fault hook that is able to report information for an arbitrary signal, not just SIGSEGV. gdb/ChangeLog: * gdbarch.c: Regenerate. * gdbarch.h: Regenerate. * gdbarch.sh (report_signal_info): New method. * infrun.c (print_signal_received_reason): Invoke gdbarch report_signal_info hook if present. |
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Andrew Burgess
|
3bc98c0c83 |
gdb: Remove deprecated_set_gdbarch_data
There are currently two remaining uses of deprecated_set_gdbarch_data, both of which are needed because during gdbarch initialisation we call gdbarch_data for a data field that is registered using: gdbarch_data_register_post_init (....) However, in both of these cases, the only thing that the call back needs from the gdbarch struct is its obstack. Given this there is nothing stopping us changing the post-init hooks into pre-init hooks. The pre-init hooks don't get passed the full gdbarch, they only get passed its obstack. The IA64 change is completely untested. The user-regs change has been tested a little by locally adding some user-regs to the x86-64 target, and also by running the RISC-V tests, which do use user-regs. gdb/ChangeLog: * gdbarch.c: Regenerate. * gdbarch.h: Regenerate. * gdbarch.sh (deprecated_set_gdbarch_data): Delete. (gdbarch_data): Use internal_error for the case where deprecated_set_gdbarch_data was originally needed. * ia64-libunwind-tdep.c (libunwind_descr_init): Update parameters, and use passed in obstack. (libunwind_frame_set_descr): Should no longer get back NULL from gdbarch_data. (_initialize_libunwind_frame): Register as a pre-init gdbarch data type. * user-regs.c (user_regs_init): Update parameters, and use passed in obstack. (user_reg_add): Should no longer get back NULL from gdbarch_data. (_initialize_user_regs): Register as a pre-init gdbarch data type. |
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|
Simon Marchi
|
19b187a978 |
gdb: fix documentation of gdbarch_displaced_step_copy_insn
I spotted something that looks wrong in the doc of gdbarch_displaced_step_copy_insn. It says that if the function returns NULL, it means that it has emulated the behavior of the instruction and written the result to REGS. However, it says below that the function may return NULL to indicate that the instruction can't be single-stepped out-of-line, in which case the core steps the instruction in-line. The two are contradictory. The right one is the latter, if the function returns NULL, the core falls back to in-line stepping. I checked all the implementations of this function and they all agree with this. gdb/ChangeLog: * gdbarch.sh (displaced_step_copy_insn): Update doc. * gdbarch.h: Re-generate. Change-Id: I98163cdd38970cde4c77680e249b10f5d2d5bf9b |
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Rainer Orth
|
bb6e55f3ee |
Remove obsolete gdbarch_static_transform_name
gdbarch_static_transform_name is completely Solaris-specific or rather specific to the Studio compilers. Studio cc has deprecated Stabs support in the 12.4 release back in 2015, GCC has defaulted to DWARF-2 on Solaris 7+ since 2004 and Stabs themselves are pretty much obsolete, so the whole code can go. Tested on sparcv9-sun-solaris2.11 and x86_64-pc-linux-gnu with --enable-targets=all. * sol2-tdep.c (sol2_static_transform_name): Remove. (sol2_init_abi): Don't register it. * gdbarch.sh (static_transform_name): Remove. * gdbarch.c, gdbarch.h: Regenerate. * dbxread.c (read_dbx_symtab) <'S'>: Remove call to gdbarch_static_transform_name. * mdebugread.c (parse_partial_symbols) <'S'>: Likewise. * stabsread.c (define_symbol) <'X'>: Remove. (define_symbol) <'S'>: Remove gdbarch_static_transform_name handling. <'V'>: Likewise. * xcoffread.c (scan_xcoff_symtab): Remove gdbarch. <'S'>: Remove call to gdbarch_static_transform_name. |
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|
Simon Marchi
|
41a77cbaad |
gdb: make gdbarch.sh write gdbarch.{c,h} directly
It was suggested in this thread [1] that gdbarch.sh should write to gdbarch.h and gdbarch.c directly. This patch implements that. When running gdbarch.sh, we currently need to move new-gdbarch.c over gdbarch.c and new-gdbarch.h over gdbarch.h. It might have been useful at some point to not have gdbarch.sh overwrite gdbarch.h and gdbarch.c, but with git it's really unnecessary. Any changes to gdbarch.sh can be inspected using `git diff`. A next step would be to have the Makefile automatically run gdbarch.sh if it sees that gdbarch.c and gdbarch.h are out of date. Or maybe even remove gdbarch.c and gdbarch.h from the tree and generate them in the build directory when building. But that requires more thinking and discussions, and I think that this change is already useful in itself. [1] https://sourceware.org/pipermail/gdb-patches/2020-May/168265.html gdb/ChangeLog; * gdbarch.sh: Write to gdbarch.c/gdbarch.h directly. Don't compare old and new versions. (compare_new): Remove. Change-Id: I7970a9e8af0afc0145cb5a28e73d94fbaa1e25b9 |
||
|
Simon Marchi
|
ffc2844e96 |
gdb: silence shellcheck warning SC2162 (use read -r) in gdbarch.sh
shellcheck reports:
In gdbarch.sh line 53:
while IFS='' read line
^--^ SC2162: read without -r will mangle backslashes.
See the rationale at [1]. In our case, we actually want the backslashes
to be interpreted and removed. Silence the warning using a directive.
[1] https://github.com/koalaman/shellcheck/wiki/SC2162
gdb/ChangeLog:
* gdbarch.sh (do_read): Add shellcheck disable directive for
warning SC2162.
|
||
|
Simon Marchi
|
1207375d76 |
gdb: fix shellcheck warnings SC2154 (referenced but not assigned) in gdbarch.sh
Fix all instances of this kind of warning:
In gdbarch.sh line 96:
m ) staticdefault="${predefault}" ;;
^-----------^ SC2154: predefault is referenced but not assigned.
These warnings appear because we are doing something a bit funky when reading
the gdbarch fields. These variables are not assigned explicitly, but
using some `eval` commands.
I don't think there is so much we can fix about those warnings. To
silence them, I've changed `${foo}` to `${foo:-}`. This tells the shell
to substitute with an empty string if `foo` is not defined. This
retains the current behavior, but the warnings go away.
gdb/ChangeLog:
* gdbarch.sh: Use ${foo:-} where shellcheck would report a
"referenced but not assigned" warning.
|
||
|
Simon Marchi
|
9fdb2916fe |
gdb: fix shellcheck warnings SC2034 (unused variable) in gdbarch.sh
shellcheck reports:
In gdbarch.sh line 139:
fallbackdefault="0"
^-------------^ SC2034: fallbackdefault appears unused. Verify use (or export if used externally).
Indeed, the `fallbackdefault` variable appears to be unused, remove the
code that sets it.
gdb/ChangeLog:
* gdbarch.sh: Remove code that sets fallbackdefault.
|
||
|
Simon Marchi
|
759cea5e3f |
gdb: fix shellcheck warnings SC2166 (&& and !! instead of -a and -o) in gdbarch.sh
Fix all warnings of this type:
In gdbarch.sh line 1238:
if [ "x${invalid_p}" = "x0" -a -n "${postdefault}" ]
^-- SC2166: Prefer [ p ] && [ q ] as [ p -a q ] is not well defined.
See the rationale here [1].
[1] https://github.com/koalaman/shellcheck/wiki/SC2166
gdb/ChangeLog:
* gdbarch.sh: Use shell operators && and || instead of
-a and -o.
|
||
|
Simon Marchi
|
cb02ab2416 |
gdb: fix shellcheck warnings SC2006 (use $() instead of ``) in gdbarch.sh
Fix all instances of:
In gdbarch.sh line 2195:
printf " `echo "$function" | sed -e 's/./ /g'` %s %s)\n" "$returntype" "$function"
^-- SC2006: Use $(...) notation instead of legacy backticked `...`.
Did you mean:
printf " $(echo "$function" | sed -e 's/./ /g') %s %s)\n" "$returntype" "$function"
See here [1] for the rationale.
[1] https://github.com/koalaman/shellcheck/wiki/SC2006
gdb/ChangeLog:
* gdbarch.sh: Use $(...) instead of `...`.
|
||
|
Simon Marchi
|
a6fc5ffc50 |
gdb: fix shellcheck warnings SC2086 (missing double quotes) in gdbarch.sh
Fix all instances of:
In gdbarch.sh line 31:
if test ! -r ${file}
^-----^ SC2086: Double quote to prevent globbing and word splitting.
Did you mean:
if test ! -r "${file}"
Note that some instances of these are in text that is eval'ed. I'm
pretty sure that things could go wrong during the eval too, but that's
not something shellcheck can check.
gdb/ChangeLog:
* gdbarch.sh: Use double quotes around variables.
|
||
|
Simon Marchi
|
8d113d130e |
gdb: fix shellcheck warnings SC2059 (variables in printf format string) in gdbarch.sh
Fix all instances of this:
In gdbarch.sh line 2182:
printf " gdb_assert (!(${invalid_p}));\n"
^-- SC2059: Don't use variables in the printf format string. Use printf "..%s.." "$foo".
... by doing exactly as the message suggests.
The rationale explained here [1] makes sense, if there happens to be a
format specifier in text substituted for the variable, the printf won't
do what we expect.
[1] https://github.com/koalaman/shellcheck/wiki/SC2059
gdb/ChangeLog:
* gdbarch.sh: Use %s with printf, instead of variables in the
format string.
|
||
|
Simon Marchi
|
fe4b2ee65c |
gdb: move enum gdb_osabi to osabi.h
I think it makes sense to have it there instead of in the catch-all defs.h. gdb/ChangeLog: * defs.h (enum gdb_osabi): Move to... * osabi.h (enum gdb_osabi): ... here. * gdbarch.sh: Include osabi.h in gdbarch.h. * gdbarch.h: Re-generate. |
||
|
Simon Marchi
|
fdb61c6c39 |
gdb: introduce displaced_step_closure_up type alias
To help with readability, add the type displaced_step_closure_up, an alias for std::unique_ptr<displaced_step_closure>, and use it throughout the code base. gdb/ChangeLog: * aarch64-tdep.c (aarch64_displaced_step_copy_insn): Use displaced_step_closure_up. * aarch64-tdep.h (aarch64_displaced_step_copy_insn): Likewise. (struct displaced_step_closure_up): * amd64-tdep.c (amd64_displaced_step_copy_insn): Likewise. * amd64-tdep.h (amd64_displaced_step_copy_insn): Likewise. * arm-linux-tdep.c (arm_linux_displaced_step_copy_insn): Likewise. * gdbarch.sh (displaced_step_copy_insn): Likewise. * gdbarch.c, gdbarch.h: Re-generate. * i386-linux-tdep.c (i386_linux_displaced_step_copy_insn): Use displaced_step_closure_up. * i386-tdep.c (i386_displaced_step_copy_insn): Likewise. * i386-tdep.h (i386_displaced_step_copy_insn): Likewise. * infrun.h (displaced_step_closure_up): New type alias. (struct displaced_step_inferior_state) <step_closure>: Change type to displaced_step_closure_up. * rs6000-tdep.c (ppc_displaced_step_copy_insn): Use displaced_step_closure_up. * s390-tdep.c (s390_displaced_step_copy_insn): Likewise. |
||
|
Simon Marchi
|
e8217e61f5 |
gdb: make gdbarch_displaced_step_copy_insn return an std::unique_ptr
This callback dynamically allocates a specialized displaced_step_closure, and gives the ownership of the object to its caller. So I think it would make sense for the callback to return an std::unique_ptr, this is what this patch implements. gdb/ChangeLog: * gdbarch.sh (displaced_step_copy_insn): Change return type to an std::unique_ptr. * gdbarch.c: Re-generate. * gdbarch.h: Re-generate. * infrun.c (displaced_step_prepare_throw): Adjust to std::unique_ptr change. * aarch64-tdep.c (aarch64_displaced_step_copy_insn): Change return type to std::unique_ptr. * aarch64-tdep.h (aarch64_displaced_step_copy_insn): Likewise. * amd64-tdep.c (amd64_displaced_step_copy_insn): Likewise. * amd64-tdep.h (amd64_displaced_step_copy_insn): Likewise. * arm-linux-tdep.c (arm_linux_displaced_step_copy_insn): Likewise. * i386-linux-tdep.c (i386_linux_displaced_step_copy_insn): Likewise. * i386-tdep.c (i386_displaced_step_copy_insn): Likewise. * i386-tdep.h (i386_displaced_step_copy_insn): Likewise. * rs6000-tdep.c (ppc_displaced_step_copy_insn): Likewise. * s390-tdep.c (s390_displaced_step_copy_insn): Likewise. |
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|
Luis Machado
|
5133a31537 |
Recognize more program breakpoint patterns
New in v3:
- Code cleanups based on reviews.
New in v2:
- Fixed misc problems based on reviews.
- Switched to using gdbarch_program_breakpoint_here_p as opposed to
gdbarch_insn_is_breakpoint.
- Fixed matching of brk instructions. Previously the mask was incorrect, which
was showing up as a few failures in the testsuite. Now it is clean.
- New testcase (separate patch).
- Moved program_breakpoint_here () to arch-utils.c and made it the default
implementation of gdbarch_program_breakpoint_here_p.
--
It was reported to me that program breakpoints (permanent ones inserted into
the code itself) other than the one GDB uses for AArch64 (0xd4200000) do not
generate visible stops when continuing, and GDB will continue spinning
infinitely.
This happens because GDB, upon hitting one of those program breakpoints, thinks
the SIGTRAP came from a delayed breakpoint hit...
(gdb) x/i $pc
=> 0x4005c0 <problem_function>: brk #0x90f
(gdb) c
Continuing.
infrun: clear_proceed_status_thread (process 14198)
infrun: proceed (addr=0xffffffffffffffff, signal=GDB_SIGNAL_DEFAULT)
infrun: proceed: resuming process 14198
infrun: resume (step=0, signal=GDB_SIGNAL_0), trap_expected=0, current thread [process 14198] at 0x4005c0
infrun: infrun_async(1)
infrun: prepare_to_wait
infrun: target_wait (-1.0.0, status) =
infrun: 14198.14198.0 [process 14198],
infrun: status->kind = stopped, signal = GDB_SIGNAL_TRAP
infrun: handle_inferior_event status->kind = stopped, signal = GDB_SIGNAL_TRAP
infrun: stop_pc = 0x4005c0
infrun: delayed software breakpoint trap, ignoring
infrun: no stepping, continue
infrun: resume (step=0, signal=GDB_SIGNAL_0), trap_expected=0, current thread [process 14198] at 0x4005c0
infrun: prepare_to_wait
infrun: target_wait (-1.0.0, status) =
infrun: 14198.14198.0 [process 14198],
infrun: status->kind = stopped, signal = GDB_SIGNAL_TRAP
infrun: handle_inferior_event status->kind = stopped, signal = GDB_SIGNAL_TRAP
infrun: stop_pc = 0x4005c0
infrun: delayed software breakpoint trap, ignoring
infrun: no stepping, continue
infrun: resume (step=0, signal=GDB_SIGNAL_0), trap_expected=0, current thread [process 14198] at 0x4005c0
infrun: prepare_to_wait
infrun: target_wait (-1.0.0, status) =
infrun: 14198.14198.0 [process 14198],
infrun: status->kind = stopped, signal = GDB_SIGNAL_TRAP
infrun: handle_inferior_event status->kind = stopped, signal = GDB_SIGNAL_TRAP
infrun: stop_pc = 0x4005c0
infrun: delayed software breakpoint trap, ignoring
infrun: no stepping, continue
infrun: resume (step=0, signal=GDB_SIGNAL_0), trap_expected=0, current thread [process 14198] at 0x4005c0
infrun: prepare_to_wait
infrun: target_wait (-1.0.0, status) =
infrun: 14198.14198.0 [process 14198],
infrun: status->kind = stopped, signal = GDB_SIGNAL_TRAP
infrun: handle_inferior_event status->kind = stopped, signal = GDB_SIGNAL_TRAP
infrun: stop_pc = 0x4005c0
infrun: delayed software breakpoint trap, ignoring
infrun: no stepping, continue
infrun: resume (step=0, signal=GDB_SIGNAL_0), trap_expected=0, current thread [process 14198] at 0x4005c0
infrun: prepare_to_wait
infrun: target_wait (-1.0.0, status) =
infrun: 14198.14198.0 [process 14198],
infrun: status->kind = stopped, signal = GDB_SIGNAL_TRAP
...
... which is not the case.
If the program breakpoint is one GDB recognizes, then it will stop when it
hits it.
(gdb) x/i $pc
=> 0x4005c0 <problem_function>: brk #0x0
(gdb) c
Continuing.
infrun: clear_proceed_status_thread (process 14193)
infrun: proceed (addr=0xffffffffffffffff, signal=GDB_SIGNAL_DEFAULT)
infrun: proceed: resuming process 14193
infrun: resume (step=0, signal=GDB_SIGNAL_0), trap_expected=0, current thread [process 14193] at 0x4005c0
infrun: infrun_async(1)
infrun: prepare_to_wait
infrun: target_wait (-1.0.0, status) =
infrun: 14193.14193.0 [process 14193],
infrun: status->kind = stopped, signal = GDB_SIGNAL_TRAP
infrun: handle_inferior_event status->kind = stopped, signal = GDB_SIGNAL_TRAP
infrun: stop_pc = 0x4005c0
infrun: random signal (GDB_SIGNAL_TRAP)
infrun: stop_waiting
infrun: stop_all_threads
infrun: stop_all_threads, pass=0, iterations=0
infrun: process 14193 not executing
infrun: stop_all_threads, pass=1, iterations=1
infrun: process 14193 not executing
infrun: stop_all_threads done
Program received signal SIGTRAP, Trace/breakpoint trap.
problem_function () at brk_0.c:7
7 asm("brk %0\n\t" ::"n"(0x0));
infrun: infrun_async(0)
Otherwise GDB will keep trying to resume the inferior and will keep
seeing the SIGTRAP's, without stopping.
To the user it appears GDB has gone into an infinite loop, interruptible only
by Ctrl-C.
Also, windbg seems to use a different variation of AArch64 breakpoint compared
to GDB. This causes problems when debugging Windows on ARM binaries, when
program breakpoints are being used.
The proposed patch creates a new gdbarch method (gdbarch_program_breakpoint_here_p)
that tells GDB whether the underlying instruction is a breakpoint instruction
or not.
This is more general than only checking for the instruction GDB uses as
breakpoint.
The existing logic is still preserved for targets that do not implement this
new gdbarch method.
The end result is like so:
(gdb) x/i $pc
=> 0x4005c0 <problem_function>: brk #0x90f
(gdb) c
Continuing.
infrun: clear_proceed_status_thread (process 16417)
infrun: proceed (addr=0xffffffffffffffff, signal=GDB_SIGNAL_DEFAULT)
infrun: proceed: resuming process 16417
infrun: resume (step=0, signal=GDB_SIGNAL_0), trap_expected=0, current thread [process 16417] at 0x4005c0
infrun: infrun_async(1)
infrun: prepare_to_wait
infrun: target_wait (-1.0.0, status) =
infrun: 16417.16417.0 [process 16417],
infrun: status->kind = stopped, signal = GDB_SIGNAL_TRAP
infrun: handle_inferior_event status->kind = stopped, signal = GDB_SIGNAL_TRAP
infrun: stop_pc = 0x4005c0
infrun: random signal (GDB_SIGNAL_TRAP)
infrun: stop_waiting
infrun: stop_all_threads
infrun: stop_all_threads, pass=0, iterations=0
infrun: process 16417 not executing
infrun: stop_all_threads, pass=1, iterations=1
infrun: process 16417 not executing
infrun: stop_all_threads done
Program received signal SIGTRAP, Trace/breakpoint trap.
problem_function () at brk.c:7
7 asm("brk %0\n\t" ::"n"(0x900 + 0xf));
infrun: infrun_async(0)
gdb/ChangeLog:
2020-01-29 Luis Machado <luis.machado@linaro.org>
* aarch64-tdep.c (BRK_INSN_MASK): Define to 0xffe0001f.
(BRK_INSN_MASK): Define to 0xd4200000.
(aarch64_program_breakpoint_here_p): New function.
(aarch64_gdbarch_init): Set gdbarch_program_breakpoint_here_p hook.
* arch-utils.c (default_program_breakpoint_here_p): Moved from
breakpoint.c.
* arch-utils.h (default_program_breakpoint_here_p): Moved from
breakpoint.h
* breakpoint.c (bp_loc_is_permanent): Changed return type to bool and
call gdbarch_program_breakpoint_here_p.
(program_breakpoint_here): Moved to arch-utils.c, renamed to
default_program_breakpoint_here_p, changed return type to bool and
simplified.
* breakpoint.h (program_breakpoint_here): Moved prototype to
arch-utils.h, renamed to default_program_breakpoint_here_p and changed
return type to bool.
* gdbarch.c: Regenerate.
* gdbarch.h: Regenerate.
* gdbarch.sh (program_breakpoint_here_p): New method.
* infrun.c (handle_signal_stop): Call
gdbarch_program_breakpoint_here_p.
|
||
|
Simon Marchi
|
a12378729f |
gdb: add declaration for _initialize_gdbarch in gdbarch.sh
In commit
gdb: add back declarations for _initialize functions
|
||
|
Joel Brobecker
|
e5d78223ea |
Update copyright year in gdbarch.sh doc/gdb.texinfo and doc/refcard.tex
These are files that need to be updated by hand, because the copyright.py
script isn't able to handle them automatically.
gdb/ChangeLog:
* gdbarch.sh: Update copyright year range of generated files.
gdb/doc/ChangeLog:
* gdb.texinfo, refcard.tex: Update copyright year range.
|
||
|
Joel Brobecker
|
b811d2c292 |
Update copyright year range in all GDB files.
gdb/ChangeLog:
Update copyright year range in all GDB files.
|
||
Tom Tromey
|
d5a22e77b5 |
Remove gdbarch_bits_big_endian
From what I can tell, set_gdbarch_bits_big_endian has never been used. That is, all architectures since its introduction have simply used the default, which is simply check the architecture's byte-endianness. Because this interferes with the scalar_storage_order code, this patch removes this gdbarch setting entirely. In some places, type_byte_order is used rather than the plain gdbarch. gdb/ChangeLog 2019-12-04 Tom Tromey <tromey@adacore.com> * ada-lang.c (decode_constrained_packed_array) (ada_value_assign, value_assign_to_component): Update. * dwarf2loc.c (rw_pieced_value, access_memory) (dwarf2_compile_expr_to_ax): Update. * dwarf2read.c (dwarf2_add_field): Update. * eval.c (evaluate_subexp_standard): Update. * gdbarch.c, gdbarch.h: Rebuild. * gdbarch.sh (bits_big_endian): Remove. * gdbtypes.h (union field_location): Update comment. * target-descriptions.c (make_gdb_type): Update. * valarith.c (value_bit_index): Update. * value.c (struct value) <bitpos>: Update comment. (unpack_bits_as_long, modify_field): Update. * value.h (value_bitpos): Update comment. Change-Id: I379b5e0c408ec8742f7a6c6b721108e73ed1b018 |
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Tom Tromey
|
953cff5630 |
Change gcc_target_options to return std::string
This patch was inspired by a recent review that recommended using std::string in a new implementation of the gcc_target_options gdbarch function. It changes this function to return std::string rather than an ordinary xmalloc'd string. I believe this caught a latent memory leak in compile.c:get_args. Tested on x86-64 Fedora 29. gdb/ChangeLog 2019-10-15 Tom Tromey <tromey@adacore.com> * gdbarch.h, gdbarch.c: Rebuild. * gdbarch.sh (gcc_target_options): Change return type to std::string. * compile/compile.c (get_args): Update. * nios2-tdep.c (nios2_gcc_target_options): Return std::string. * arm-linux-tdep.c (arm_linux_gcc_target_options): Return std::string. * aarch64-linux-tdep.c (aarch64_linux_gcc_target_options): Return std::string. * arch-utils.c (default_gcc_target_options): Return std::string. * arch-utils.h (default_gcc_target_options): Return std::string. * s390-tdep.c (s390_gcc_target_options): Return std::string. Change-Id: I51f61703426a323089e646da8f22320a2cafbc1f |
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Alan Hayward
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aa7ca1bb44 |
Move [PAC] into a new MI field addr_flags
Add a new print_pc which prints both the PC and a new field addr_flags. Call this wherever the PC is printed in stack.c. Add a new gdbarch method get_pc_address_flags to obtain the addr_flag contents. By default returns an empty string, on AArch64 this returns PAC if the address has been masked in the frame. Document this in the manual and NEWS file. gdb/ChangeLog: * NEWS (Other MI changes): New subsection. * aarch64-tdep.c (aarch64_get_pc_address_flags): New function. (aarch64_gdbarch_init): Add aarch64_get_pc_address_flags. * arch-utils.c (default_get_pc_address_flags): New function. * arch-utils.h (default_get_pc_address_flags): New declaration. * gdbarch.sh: Add get_pc_address_flags. * gdbarch.c: Regenerate. * gdbarch.h: Likewise. * stack.c (print_pc): New function. (print_frame_info) (print_frame): Call print_pc. gdb/doc/ChangeLog: * gdb.texinfo (AArch64 Pointer Authentication) (GDB/MI Breakpoint Information) (Frame Information): Document addr_field. |
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Andrew Burgess
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6b78c3f83c |
gdb: Remove a non-const reference parameter
Non-const reference parameter should be avoided according to the GDB coding standard: https://sourceware.org/gdb/wiki/Internals%20GDB-C-Coding-Standards#Avoid_non-const_reference_parameters.2C_use_pointers_instead This commit updates the gdbarch method gdbarch_stap_adjust_register, and the one implementation i386_stap_adjust_register to avoid using a non-const reference parameter. I've also removed the kfail from the testsuite for bug 24541, as this issue is now resolved. gdb/ChangeLog: PR breakpoints/24541 * gdbarch.c: Regenerate. * gdbarch.h: Regenerate. * gdbarch.sh: Adjust return type and parameter types for 'stap_adjust_register'. (i386_stap_adjust_register): Adjust signature and return new register name. * stap-probe.c (stap_parse_register_operand): Adjust use of 'gdbarch_stap_adjust_register'. gdb/testsuite/ChangeLog: PR breakpoints/24541 * gdb.mi/mi-catch-cpp-exceptions.exp: Remove kfail due to 24541. |
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Sergio Durigan Junior
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7d7571f0c1 |
Adjust i386 registers on SystemTap probes' arguments (PR breakpoints/24541)
This bug has been reported on PR breakpoints/24541, but it is possible
to reproduce it easily by running:
make check-gdb TESTS=gdb.base/stap-probe.exp RUNTESTFLAGS='--target_board unix/-m32'
The underlying cause is kind of complex, and involves decisions made
by GCC and the sys/sdt.h header file about how to represent a probe
argument that lives in a register in 32-bit programs. I'll use
Andrew's example on the bug to illustrate the problem.
libstdc++ has a probe named "throw" with two arguments. On i386, the
probe is:
stapsdt 0x00000028 NT_STAPSDT (SystemTap probe descriptors)
Provider: libstdcxx
Name: throw
Location: 0x00072c96, Base: 0x00133d64, Semaphore: 0x00000000
Arguments: 4@%si 4@%di
I.e., the first argument is an unsigned 32-bit value (represented by
the "4@") that lives on %si, and the second argument is an unsigned
32-bit value that lives on %di. Note the discrepancy between the
argument size reported by the probe (32-bit) and the register size
being used to store the value (16-bit).
However, if you take a look at the disassemble of a program that uses
this probe, you will see:
00072c80 <__cxa_throw@@CXXABI_1.3>:
72c80: 57 push %edi
72c81: 56 push %esi
72c82: 53 push %ebx
72c83: 8b 74 24 10 mov 0x10(%esp),%esi
72c87: e8 74 bf ff ff call 6ec00 <__cxa_finalize@plt+0x980>
72c8c: 81 c3 74 e3 10 00 add $0x10e374,%ebx
72c92: 8b 7c 24 14 mov 0x14(%esp),%edi
72c96: 90 nop <----------------- PROBE IS HERE
72c97: e8 d4 a2 ff ff call 6cf70 <__cxa_get_globals@plt>
72c9c: 83 40 04 01 addl $0x1,0x4(%eax)
72ca0: 83 ec 04 sub $0x4,%esp
72ca3: ff 74 24 1c pushl 0x1c(%esp)
72ca7: 57 push %edi
72ca8: 56 push %esi
72ca9: e8 62 a3 ff ff call 6d010 <__cxa_init_primary_exception@plt>
72cae: 8d 70 40 lea 0x40(%eax),%esi
72cb1: c7 00 01 00 00 00 movl $0x1,(%eax)
72cb7: 89 34 24 mov %esi,(%esp)
72cba: e8 61 96 ff ff call 6c320 <_Unwind_RaiseException@plt>
72cbf: 89 34 24 mov %esi,(%esp)
72cc2: e8 c9 84 ff ff call 6b190 <__cxa_begin_catch@plt>
72cc7: e8 d4 b3 ff ff call 6e0a0 <_ZSt9terminatev@plt>
72ccc: 66 90 xchg %ax,%ax
72cce: 66 90 xchg %ax,%ax
Note how the program is actually using %edi, and not %di, to store the
second argument. This is the problem here.
GDB will basically read the probe argument, then read the contents of
%di, and then cast this value to uint32_t, which causes the wrong
value to be obtained. In the gdb.base/stap-probe.exp case, this makes
GDB read the wrong memory location, and not be able to display a test
string. In Andrew's example, this causes GDB to actually stop at a
"catch throw" when it should actually have *not* stopped.
After some discussion with Frank Eigler and Jakub Jelinek, it was
decided that this bug should be fixed on the client side (i.e., the
program that actually reads the probes), and this is why I'm proposing
this patch.
The idea is simple: we will have a gdbarch method, which, for now, is
only used by i386. The generic code that deals with register operands
on gdb/stap-probe.c will call this method if it exists, passing the
current parse information, the register name and its number.
The i386 method will then verify if the register size is greater or
equal than the size reported by the stap probe (the "4@" part). If it
is, we're fine. Otherwise, it will check if we're dealing with any of
the "extendable" registers (like ax, bx, si, di, sp, etc.). If we
are, it will change the register name to include the "e" prefix.
I have tested the patch here in many scenarios, and it fixes Andrew's
bug and also the regressions I mentioned before, on
gdb.base/stap-probe.exp. No regressions where found on other tests.
Comments?
gdb/ChangeLog:
2019-06-27 Sergio Durigan Junior <sergiodj@redhat.com>
PR breakpoints/24541
* gdbarch.c: Regenerate.
* gdbarch.h: Regenerate.
* gdbarch.sh: Add 'stap_adjust_register'.
* i386-tdep.c: Include '<unordered_set>'.
(i386_stap_adjust_register): New function.
(i386_elf_init_abi): Register 'i386_stap_adjust_register'.
* stap-probe.c (stap_parse_register_operand): Call
'gdbarch_stap_adjust_register'.
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Tom Tromey
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37eedb3982 |
Make base class for parser_state
This makes a new base class, expr_builder, for parser_state. This separates the state needed to construct an expression from the state needed by the parsers. gdb/ChangeLog 2019-04-04 Tom Tromey <tom@tromey.com> * gdbarch.h, gdbarch.c: Rebuild. * gdbarch.sh (dtrace_parse_probe_argument): Change type. * stap-probe.h: (struct stap_parse_info): Replace "parser_state" with "expr_builder". * parser-defs.h (struct expr_builder): Rename from "parser_state". (parser_state): New class. * parse.c (expr_builder): Rename. (expr_builder::release): Rename. (write_exp_elt, write_exp_elt_opcode, write_exp_elt_sym) (write_exp_elt_msym, write_exp_elt_block, write_exp_elt_objfile) (write_exp_elt_longcst, write_exp_elt_floatcst) (write_exp_elt_type, write_exp_elt_intern, write_exp_string) (write_exp_string_vector, write_exp_bitstring) (write_exp_msymbol, mark_struct_expression) (write_dollar_variable) (insert_type_address_space, increase_expout_size): Replace "parser_state" with "expr_builder". * dtrace-probe.c: Replace "parser_state" with "expr_builder". * amd64-linux-tdep.c (amd64_dtrace_parse_probe_argument): Replace "parser_state" with "expr_builder". |
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Tom Tromey
|
a068643d69 |
Change pid_to_str to return std::string
Currently the target pid_to_str method returns a const char *, so many implementations have a static buffer that they update. This patch changes these methods to return a std::string instead. I think this is cleaner and avoids possible gotchas when calling pid_to_str on different ptids in a single statement. (Though no such calls exist currently.) This also updates various helper functions, and the gdbarch pid_to_str methods. I also made a best effort to fix all the callers, but I can't build some of the *-nat.c files. Tested by the buildbot. gdb/ChangeLog 2019-03-13 Tom Tromey <tromey@adacore.com> * i386-gnu-nat.c (i386_gnu_nat_target::fetch_registers) (i386_gnu_nat_target::store_registers): Update. * target-debug.h (target_debug_print_std_string): New macro. * x86-linux-nat.c (x86_linux_nat_target::enable_btrace): Update. * windows-tdep.c (display_one_tib): Update. * tui/tui-stack.c (tui_make_status_line): Update. * top.c (print_inferior_quit_action): Update. * thread.c (thr_try_catch_cmd): Update. (add_thread_with_info): Update. (thread_target_id_str): Update. (thr_try_catch_cmd): Update. (thread_command): Update. (thread_find_command): Update. * record-btrace.c (record_btrace_target::info_record) (record_btrace_resume_thread, record_btrace_target::resume) (record_btrace_cancel_resume, record_btrace_step_thread) (record_btrace_target::wait, record_btrace_target::wait) (record_btrace_target::wait, record_btrace_target::stop): Update. * progspace.c (print_program_space): Update. * process-stratum-target.c (process_stratum_target::thread_address_space): Update. * linux-fork.c (linux_fork_mourn_inferior) (detach_checkpoint_command, info_checkpoints_command) (linux_fork_context): Update. (linux_fork_detach): Update. (class scoped_switch_fork_info): Update. (delete_checkpoint_command): Update. * infrun.c (follow_fork_inferior): Update. (follow_fork_inferior): Update. (proceed_after_vfork_done): Update. (handle_vfork_child_exec_or_exit): Update. (follow_exec): Update. (displaced_step_prepare_throw): Update. (displaced_step_restore): Update. (start_step_over): Update. (resume_1): Update. (clear_proceed_status_thread): Update. (proceed): Update. (print_target_wait_results): Update. (do_target_wait): Update. (context_switch): Update. (stop_all_threads): Update. (restart_threads): Update. (finish_step_over): Update. (handle_signal_stop): Update. (switch_back_to_stepped_thread): Update. (keep_going_pass_signal): Update. (print_exited_reason): Update. (normal_stop): Update. * inferior.c (inferior_pid_to_str): Change return type. (print_selected_inferior): Update. (add_inferior): Update. (detach_inferior): Update. * dummy-frame.c (fprint_dummy_frames): Update. * dcache.c (dcache_info_1): Update. * btrace.c (btrace_enable, btrace_disable, btrace_teardown) (btrace_fetch, btrace_clear): Update. * linux-tdep.c (linux_core_pid_to_str): Change return type. * i386-cygwin-tdep.c (i386_windows_core_pid_to_str): Change return type. * fbsd-tdep.c (fbsd_core_pid_to_str): Change return type. * sol2-tdep.h (sol2_core_pid_to_str): Change return type. * sol2-tdep.c (sol2_core_pid_to_str): Change return type. * gdbarch.c, gdbarch.h: Rebuild. * gdbarch.sh (core_pid_to_str): Change return type. * windows-nat.c (struct windows_nat_target) <pid_to_str>: Change return type. (windows_nat_target::pid_to_str): Change return type. (windows_delete_thread): Update. (windows_nat_target::attach): Update. (windows_nat_target::files_info): Update. * target-delegates.c: Rebuild. * sol-thread.c (class sol_thread_target) <pid_to_str>: Change return type. (sol_thread_target::pid_to_str): Change return type. * remote.c (class remote_target) <pid_to_str>: Change return type. (remote_target::pid_to_str): Change return type. (extended_remote_target::attach, remote_target::remote_stop_ns) (remote_target::remote_notif_remove_queued_reply) (remote_target::push_stop_reply, remote_target::disable_btrace): Update. (extended_remote_target::attach): Update. * remote-sim.c (struct gdbsim_target) <pid_to_str>: Change return type. (gdbsim_target::pid_to_str): Change return type. * ravenscar-thread.c (struct ravenscar_thread_target) <pid_to_str>: Change return type. (ravenscar_thread_target::pid_to_str): Change return type. * procfs.c (class procfs_target) <pid_to_str>: Change return type. (procfs_target::pid_to_str): Change return type. (procfs_target::attach): Update. (procfs_target::detach): Update. (procfs_target::fetch_registers): Update. (procfs_target::store_registers): Update. (procfs_target::wait): Update. (procfs_target::files_info): Update. * obsd-nat.c (obsd_nat_target::pid_to_str): Change return type. * nto-procfs.c (struct nto_procfs_target) <pid_to_str>: Change return type. (nto_procfs_target::pid_to_str): Change return type. (nto_procfs_target::files_info, nto_procfs_target::attach): Update. * linux-thread-db.c (class thread_db_target) <pid_to_str>: Change return type. * linux-nat.c (linux_nat_target::pid_to_str): Change return type. (exit_lwp): Update. (attach_proc_task_lwp_callback, get_detach_signal) (detach_one_lwp, resume_lwp, linux_nat_target::resume) (linux_nat_target::resume, wait_lwp, stop_callback) (maybe_clear_ignore_sigint, stop_wait_callback, status_callback) (save_stop_reason, select_event_lwp, linux_nat_filter_event) (linux_nat_wait_1, resume_stopped_resumed_lwps) (linux_nat_target::wait, linux_nat_stop_lwp): Update. * inf-ptrace.c (inf_ptrace_target::pid_to_str): Change return type. (inf_ptrace_target::attach): Update. (inf_ptrace_target::files_info): Update. * go32-nat.c (struct go32_nat_target) <pid_to_str>: Change return type. (go32_nat_target::pid_to_str): Change return type. * gnu-nat.c (gnu_nat_target::pid_to_str): Change return type. (gnu_nat_target::wait): Update. (gnu_nat_target::wait): Update. (gnu_nat_target::resume): Update. * fbsd-nat.c (fbsd_nat_target::pid_to_str): Change return type. (fbsd_nat_target::wait): Update. * darwin-nat.c (darwin_nat_target::pid_to_str): Change return type. (darwin_nat_target::attach): Update. * corelow.c (class core_target) <pid_to_str>: Change return type. (core_target::pid_to_str): Change return type. * target.c (normal_pid_to_str): Change return type. (default_pid_to_str): Likewise. (target_pid_to_str): Change return type. (target_translate_tls_address): Update. (target_announce_detach): Update. * bsd-uthread.c (struct bsd_uthread_target) <pid_to_str>: Change return type. (bsd_uthread_target::pid_to_str): Change return type. * bsd-kvm.c (class bsd_kvm_target) <pid_to_str>: Change return type. (bsd_kvm_target::pid_to_str): Change return type. * aix-thread.c (class aix_thread_target) <pid_to_str>: Change return type. (aix_thread_target::pid_to_str): Change return type. * target.h (struct target_ops) <pid_to_str>: Change return type. (target_pid_to_str, normal_pid_to_str): Likewise. * obsd-nat.h (class obsd_nat_target) <pid_to_str>: Change return type. * linux-nat.h (class linux_nat_target) <pid_to_str>: Change return type. * inf-ptrace.h (struct inf_ptrace_target) <pid_to_str>: Change return type. * gnu-nat.h (struct gnu_nat_target) <pid_to_str>: Change return type. * fbsd-nat.h (class fbsd_nat_target) <pid_to_str>: Change return type. * darwin-nat.h (class darwin_nat_target) <pid_to_str>: Change return type. |
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John Baldwin
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6e056c8178 |
Add a new gdbarch method to resolve the address of TLS variables.
Permit TLS variable addresses to be resolved purely by an ABI rather than requiring a target method. This doesn't try the target method if the ABI function is present (even if the ABI function fails) to simplify error handling. gdb/ChangeLog: * gdbarch.sh (get_thread_local_address): New method. * gdbarch.h, gdbarch.c: Regenerate. * target.c (target_translate_tls_address): Use gdbarch_get_thread_local_address if present instead of target::get_thread_local_address. |
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Andrew Burgess
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5561fc304f |
gdb: Restructure type_align and gdbarch_type_align
This commit restructures the relationship between the type_align function and the gdbarch_type_align method. The problem being addressed with this commit is this; previously the type_align function was structured so that for "basic" types (int, float, etc) the gdbarch_type_align hook was called, which for "compound" types (arrays, structs, etc) the common type_align code has a fixed method for how to extract a "basic" type and would then call itself on that "basic" type. The problem is that if an architecture wants to modify the alignment rules for a "compound" type then this is not currently possible. In the revised structure, all types pass through the gdbarch_type_align method. If this method returns 0 then this indicates that the architecture has no special rules for this type, and GDB should apply the default rules for alignment. However, the architecture is free to provide an alignment for any type, both "basic" and "compound". After this commit the default alignment rules now all live in the type_align function, the default_type_align only ever returns 0, meaning apply the default rules. I've updated the 3 targets (arc, i386, and nios2) that already override the gdbarch_type_align method to fit the new scheme. Tested on X86-64/GNU Linux with no regressions. gdb/ChangeLog: * arc-tdep.c (arc_type_align): Provide alignment for basic types, return 0 for other types. * arch-utils.c (default_type_align): Always return 0. * gdbarch.h: Regenerate. * gdbarch.sh (type_align): Extend comment. * gdbtypes.c (type_align): Add additional comments, always call gdbarch_type_align before applying the default rules. * i386-tdep.c (i386_type_align): Return 0 as the default rule, generic code will then apply a suitable default. * nios2-tdep.c (nios2_type_align): Provide alignment for basic types, return 0 for other types. |
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Andrew Burgess
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c6f4a5d0ed |
gdb: Update copyright year range generated by gdbarch.sh
The copyright year that gdbarch.sh places into the generated files
gdbarch.{c,h} wasn't updated at the start of the year. After this
commit the gdbarch.{c,h} files regenerate as the currently are in the
tree.
gdb/ChangeLog:
* gdbarch.sh: Update the copyright year range that is placed into
generated files.
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Joel Brobecker
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42a4f53d2b |
Update copyright year range in all GDB files.
This commit applies all changes made after running the gdb/copyright.py script. Note that one file was flagged by the script, due to an invalid copyright header (gdb/unittests/basic_string_view/element_access/char/empty.cc). As the file was copied from GCC's libstdc++-v3 testsuite, this commit leaves this file untouched for the time being; a patch to fix the header was sent to gcc-patches first. gdb/ChangeLog: Update copyright year range in all GDB files. |