This option allows to tell GDB to detect and possibly handle mismatched exec-files.
A recurrent problem with GDB is that GDB uses the wrong exec-file
when using the attach/detach commands successively.
Also, in case the user specifies a file on the command line but attaches
to the wrong PID, this error is not made visible and gives a not user
understandable behaviour.
For example:
$ gdb
...
(gdb) atta 2682 ############################################ PID running 'sleepers' executable
Attaching to process 2682
[New LWP 2683]
[New LWP 2684]
[New LWP 2685]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007f5ff829f603 in select () at ../sysdeps/unix/syscall-template.S:84
84 ../sysdeps/unix/syscall-template.S: No such file or directory.
(gdb) det
Detaching from program: /home/philippe/valgrind/git/trunk_untouched/gdbserver_tests/sleepers, process 2682
[Inferior 1 (process 2682) detached]
(gdb) atta 31069 ############################################ PID running 'gdb' executable
Attaching to program: /home/philippe/valgrind/git/trunk_untouched/gdbserver_tests/sleepers, process 31069
Reading symbols from /lib64/ld-linux-x86-64.so.2...
Reading symbols from /usr/lib/debug/.build-id/60/6df9c355103e82140d513bc7a25a635591c153.debug...
0x00007f43c23478a0 in ?? ()
(gdb) bt
#0 0x00007f43c23478a0 in ?? ()
#1 0x0000558909e3ad91 in ?? ()
#2 0x0000202962646700 in ?? ()
#3 0x00007ffc69c74e70 in ?? ()
#4 0x000055890c1d2350 in ?? ()
#5 0x0000000000000000 in ?? ()
(gdb)
The second attach has kept the executable of the first attach.
(in this case, 31069 is the PID of a GDB, that has nothing to do
with the first determined 'sleepers' executable).
Similarly, if specifying an executable, but attaching to a wrong pid,
we get:
gdb /home/philippe/valgrind/git/trunk_untouched/gdbserver_tests/sleepers
...
Reading symbols from /home/philippe/valgrind/git/trunk_untouched/gdbserver_tests/sleepers...
(gdb) atta 31069 ############################################ PID running 'gdb' executable
Attaching to program: /home/philippe/valgrind/git/trunk_untouched/gdbserver_tests/sleepers, process 31069
Reading symbols from /lib64/ld-linux-x86-64.so.2...
Reading symbols from /usr/lib/debug/.build-id/60/6df9c355103e82140d513bc7a25a635591c153.debug...
0x00007f43c23478a0 in ?? ()
(gdb) bt
#0 0x00007f43c23478a0 in ?? ()
#1 0x0000558909e3ad91 in ?? ()
#2 0x0000202962646700 in ?? ()
#3 0x00007ffc69c74e70 in ?? ()
#4 0x000055890c1d2350 in ?? ()
#5 0x0000000000000000 in ?? ()
(gdb)
And it is unclear to the user what has happened/what is going wrong.
This patch series implements a new option:
(gdb) apropos exec-file-mismatch
set exec-file-mismatch -- Set exec-file-mismatch handling (ask|warn|off).
show exec-file-mismatch -- Show exec-file-mismatch handling (ask|warn|off).
(gdb) help set exec-file-mismatch
Set exec-file-mismatch handling (ask|warn|off).
Specifies how to handle a mismatch between the current exec-file name
loaded by GDB and the exec-file name automatically determined when attaching
to a process:
ask - warn the user and ask whether to load the determined exec-file.
warn - warn the user, but do not change the exec-file.
off - do not check for mismatch.
"ask" means: in case of mismatch between the current exec-file name
and the automatically determined exec-file name of the PID we are attaching to,
give a warning to the user and ask whether to load the automatically determined
exec-file.
"warn" means: in case of mismatch, just give a warning to the user.
"off" means: do not check for mismatch.
This fixes PR gdb/17626.
There was a previous trial to fix this PR.
See https://sourceware.org/ml/gdb-patches/2015-07/msg00118.html
This trial was however only fixing the problem for the automatically
determined executable files when doing attach.
It was differentiating the 'user specified executable files' ("sticky")
from the executable files automatically found by GDB.
But such user specified sticky executables are in most cases due
to a wrong manipulation by the user, giving unexpected results
such as backtrace showing no function like in the above example.
This patch ensures that whenever a process executable can be
determined, that the user is warned if there is a mismatch.
The same tests as above then give:
(gdb) atta 2682
Attaching to process 2682
[New LWP 2683]
[New LWP 2684]
[New LWP 2685]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007f5ff829f603 in select () at ../sysdeps/unix/syscall-template.S:84
84 ../sysdeps/unix/syscall-template.S: No such file or directory.
(gdb) det
Detaching from program: /home/philippe/valgrind/git/trunk_untouched/gdbserver_tests/sleepers, process 2682
[Inferior 1 (process 2682) detached]
(gdb) atta 31069
Attaching to program: /home/philippe/valgrind/git/trunk_untouched/gdbserver_tests/sleepers, process 31069
warning: Mismatch between current exec-file /home/philippe/valgrind/git/trunk_untouched/gdbserver_tests/sleepers
and automatically determined exec-file /bd/home/philippe/gdb/git/build_fixes/gdb/gdb
exec-file-mismatch handling is currently "ask"
Load new symbol table from "/bd/home/philippe/gdb/git/build_fixes/gdb/gdb"? (y or n) y
Reading symbols from /bd/home/philippe/gdb/git/build_fixes/gdb/gdb...
Setting up the environment for debugging gdb.
...
Reading symbols from /usr/lib/debug/.build-id/60/6df9c355103e82140d513bc7a25a635591c153.debug...
0x00007f43c23478a0 in __poll_nocancel () at ../sysdeps/unix/syscall-template.S:84
84 ../sysdeps/unix/syscall-template.S: No such file or directory.
(top-gdb) bt
During symbol reading: incomplete CFI data; unspecified registers (e.g., rax) at 0x7f43c23478ad
During symbol reading: unsupported tag: 'DW_TAG_unspecified_type'
During symbol reading: cannot get low and high bounds for subprogram DIE at 0x12282a7
During symbol reading: Child DIE 0x12288ba and its abstract origin 0x1228b26 have different parents
During symbol reading: DW_AT_call_target target DIE has invalid low pc, for referencing DIE 0x1229540 [in module /bd/home/philippe/gdb/git/build_fixes/gdb/gdb]
#0 0x00007f43c23478a0 in __poll_nocancel () at ../sysdeps/unix/syscall-template.S:84
#1 0x0000558909e3ad91 in poll (__timeout=-1, __nfds=<optimized out>, __fds=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
#2 gdb_wait_for_event (block=block@entry=1) at ../../fixes/gdb/event-loop.c:772
#3 0x0000558909e3aef4 in gdb_do_one_event () at ../../fixes/gdb/event-loop.c:347
#4 0x0000558909e3b085 in gdb_do_one_event () at ../../fixes/gdb/common/common-exceptions.h:219
#5 start_event_loop () at ../../fixes/gdb/event-loop.c:371
During symbol reading: Member function "~_Sp_counted_base" (offset 0x1c69bf7) is virtual but the vtable offset is not specified
During symbol reading: Multiple children of DIE 0x1c8f5a0 refer to DIE 0x1c8f0ee as their abstract origin
#6 0x0000558909ed3b78 in captured_command_loop () at ../../fixes/gdb/main.c:331
#7 0x0000558909ed4b6d in captured_main (data=<optimized out>) at ../../fixes/gdb/main.c:1174
#8 gdb_main (args=<optimized out>) at ../../fixes/gdb/main.c:1190
#9 0x0000558909c1e9a8 in main (argc=<optimized out>, argv=<optimized out>) at ../../fixes/gdb/gdb.c:32
(top-gdb)
gdb /home/philippe/valgrind/git/trunk_untouched/gdbserver_tests/sleepers
...
Reading symbols from /home/philippe/valgrind/git/trunk_untouched/gdbserver_tests/sleepers...
(gdb) atta 31069
Attaching to program: /home/philippe/valgrind/git/trunk_untouched/gdbserver_tests/sleepers, process 31069
warning: Mismatch between current exec-file /home/philippe/valgrind/git/trunk_untouched/gdbserver_tests/sleepers
and automatically determined exec-file /bd/home/philippe/gdb/git/build_fixes/gdb/gdb
exec-file-mismatch handling is currently "ask"
Load new symbol table from "/bd/home/philippe/gdb/git/build_fixes/gdb/gdb"? (y or n) y
Reading symbols from /bd/home/philippe/gdb/git/build_fixes/gdb/gdb...
Setting up the environment for debugging gdb.
....
In other words, it now works as intuitively expected by the user.
If ever the user gave the correct executable on the command line,
then attached to the wrong pid, then confirmed loading the wrong executable,
the user can simply fix this by detaching, and attaching to the correct pid,
GDB will then tell again to the user that the exec-file might better
be loaded.
The default value of "ask" is chosen instead of e.g. "warn" as in most
cases, switching of executable will be the correct action,
and in any case, the user can decide to not load the executable,
as GDB asks a confirmation to the user to load the new executable.
For settings "ask" and "warn", the new function validate_exec_file ()
tries to get the inferior pid exec file and compares it with the current
exec file. In case of mismatch, it warns the user and optionally load
the executable.
This function is called in the attach_command implementation to cover
most cases of attaching to a running process.
It must also be called in remote.c, as the attach command is not supported
for all types of remote gdbserver.
gdb/ChangeLog
2020-01-25 Philippe Waroquiers <philippe.waroquiers@skynet.be>
* exec.c (exec_file_mismatch_names, exec_file_mismatch_mode)
(show_exec_file_mismatch_command, set_exec_file_mismatch_command)
(validate_exec_file): New variables, enums, functions.
(exec_file_locate_attach, print_section_info): Style the filenames.
(_initialize_exec): Install show_exec_file_mismatch_command and
set_exec_file_mismatch_command.
* gdbcore.h (validate_exec_file): Declare.
* infcmd.c (attach_command): Call validate_exec_file.
* remote.c ( remote_target::remote_add_inferior): Likewise.
This fixes a latent bug exposed by the multi-target patch (5b6d1e4fa
"Multi-target support), and then fixes two other latent bugs exposed
by fixing that first latent bug.
The symptom described in the bug report is that starting a first
inferior, then trying to run a second (multi-threaded) inferior twice,
causes libthread_db to fail to load, along with other erratic
behavior:
(gdb) run
Starting program: /tmp/foo
warning: td_ta_new failed: generic error
Going a bit deeply, I found that if the two inferiors have different
symbols, we can see that just after inferior 2 exits, we are left with
inferior 2 selected, which is correct, but the symbols in scope belong
to inferior 1, which is obviously incorrect...
This problem is that there's a path in
scoped_restore_current_thread::restore() that switches to no thread
selected, and switches the current inferior, but leaves the current
program space as is, resulting in leaving the program space pointing
to the wrong program space (the one of the other inferior). This was
happening after handling TARGET_WAITKIND_NO_RESUMED, which is an event
that triggers after TARGET_WAITKIND_EXITED for the previous inferior
exit. Subsequent symbol lookups find the symbols of the wrong
inferior.
The fix is to use switch_to_inferior_no_thread in that problem spot.
This function was recently added along with the multi-target work
exactly for these situations.
As for testing, this patch adds a new testcase that tests symbol
printing just after inferior exit, which exercises the root cause of
the problem more directly. And then, to cover the use case described
in the bug too, it also exercises the lithread_db.so mis-loading, by
using TLS printing as a proxy for being sure that threaded debugging
was activated sucessfully. The testcase fails without the fix like
this, for the "print symbol just after exit" bits:
...
[Inferior 1 (process 8719) exited normally]
(gdb) PASS: gdb.multi/multi-re-run.exp: re_run_inf=1: iter=1: continue until exit
print re_run_var_1
No symbol "re_run_var_1" in current context.
(gdb) FAIL: gdb.multi/multi-re-run.exp: re_run_inf=1: iter=1: print re_run_var_1
...
And like this for the "libthread_db.so loading" bits:
(gdb) run
Starting program: /home/pedro/gdb/binutils-gdb/build/gdb/testsuite/outputs/gdb.multi/multi-re-run/multi-re-run
warning: td_ta_new failed: generic error
[New LWP 27001]
Thread 1.1 "multi-re-run" hit Breakpoint 3, all_started () at /home/pedro/gdb/binutils-gdb/build/../src/gdb/testsuite/gdb.multi/multi-re-run.c:44
44 }
(gdb) PASS: gdb.multi/multi-re-run.exp: re_run_inf=1: iter=2: running to all_started in runto
print tls_var
Cannot find thread-local storage for LWP 27000, executable file /home/pedro/gdb/binutils-gdb/build/gdb/testsuite/outputs/gdb.multi/multi-re-run/multi-re-run:
Cannot find thread-local variables on this target
(gdb) FAIL: gdb.multi/multi-re-run.exp: re_run_inf=1: iter=2: print tls_var
As mentioned, that fix above goes on to expose a couple other latent
bugs. This commit fixes those as well.
The first latent bug exposed is in
infrun.c:handle_vfork_child_exec_or_exit. The current code is leaving
inf->pspace == NULL while calling clone_program_space. The idea was
to make it so that the breakpoints module doesn't use this inferior's
pspace to set breakpoints. With that, any
scoped_restore_current_thread use from within clone_program_space
tries to restore a NULL program space, which hits an assertion:
Attaching after Thread 0x7ffff74b8700 (LWP 27276) vfork to child process 27277]
[New inferior 2 (process 27277)]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
/home/pedro/gdb/binutils-gdb/build/../src/gdb/progspace.c:243: internal-error: void set_current_program_space(program_space*): Assertion `pspace != NULL' faile
d.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n) FAIL: gdb.threads/vfork-follow-child-exit.exp: detach-on-fork=off: continue (GDB internal error)
That NULL pspace idea was legitimate, but it's no longer necessary,
since commit b2e586e850 ("Defer breakpoint reset when cloning
progspace for fork child"). So the fix is to just set the inferior's
program space earlier.
The other latent bug exposed is in exec.c. When exec_close is called
from the program_space destructor, it is purposedly called with a
current program space that is not the current inferior's program
space. The problem is that the multi-target work added some code to
remove_target_sections that loops over all inferiors, and uses
scoped_restore_current_thread to save/restore the previous
thread/inferior/frame state. This makes it so that exec_close returns
with the current program space set to the current inferior's program
space, which is exactly what we did not want. Then the program_space
destructor continues into free_all_objfiles, but it is now running
that method on the wrong program space, resulting in:
Reading symbols from /home/pedro/gdb/binutils-gdb/build/gdb/testsuite/outputs/gdb.threads/fork-plus-threads/fork-plus-threads...
Reading symbols from /usr/lib/debug/usr/lib64/libpthread-2.26.so.debug...
Reading symbols from /usr/lib/debug/usr/lib64/libm-2.26.so.debug...
Reading symbols from /usr/lib/debug/usr/lib64/libc-2.26.so.debug...
Reading symbols from /usr/lib/debug/usr/lib64/ld-2.26.so.debug...
[Inferior 3 (process 9583) exited normally]
/home/pedro/gdb/binutils-gdb/build/../src/gdb/progspace.c:170: internal-error: void program_space::free_all_objfiles(): Assertion `so->objfile == NULL' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n) FAIL: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: inferior 1 exited (GDB internal error)
The fix is to use scoped_restore_current_pspace_and_thread instead of
scoped_restore_current_thread.
gdb/ChangeLog:
2020-01-24 Pedro Alves <palves@redhat.com>
PR gdb/25410
* thread.c (scoped_restore_current_thread::restore): Use
switch_to_inferior_no_thread.
* exec.c: Include "progspace-and-thread.h".
(add_target_sections, remove_target_sections):
scoped_restore_current_pspace_and_thread instead of
scoped_restore_current_thread.
* infrun.c (handle_vfork_child_exec_or_exit): Assign the pspace
and aspace to the inferior before calling clone_program_space.
Remove stale comment.
gdb/testsuite/ChangeLog:
2020-01-24 Pedro Alves <palves@redhat.com>
PR gdb/25410
* gdb.multi/multi-re-run-1.c: New.
* gdb.multi/multi-re-run-2.c: New.
* gdb.multi/multi-re-run.exp: New.
This commit adds multi-target support to GDB. What this means is that
with this commit, GDB can now be connected to different targets at the
same time. E.g., you can debug a live native process and a core dump
at the same time, connect to multiple gdbservers, etc.
Actually, the word "target" is overloaded in gdb. We already have a
target stack, with pushes several target_ops instances on top of one
another. We also have "info target" already, which means something
completely different to what this patch does.
So from here on, I'll be using the "target connections" term, to mean
an open process_stratum target, pushed on a target stack. This patch
makes gdb have multiple target stacks, and multiple process_stratum
targets open simultaneously. The user-visible changes / commands will
also use this terminology, but of course it's all open to debate.
User-interface-wise, not that much changes. The main difference is
that each inferior may have its own target connection.
A target connection (e.g., a target extended-remote connection) may
support debugging multiple processes, just as before.
Say you're debugging against gdbserver in extended-remote mode, and
you do "add-inferior" to prepare to spawn a new process, like:
(gdb) target extended-remote :9999
...
(gdb) start
...
(gdb) add-inferior
Added inferior 2
(gdb) inferior 2
[Switching to inferior 2 [<null>] (<noexec>)]
(gdb) file a.out
...
(gdb) start
...
At this point, you have two inferiors connected to the same gdbserver.
With this commit, GDB will maintain a target stack per inferior,
instead of a global target stack.
To preserve the behavior above, by default, "add-inferior" makes the
new inferior inherit a copy of the target stack of the current
inferior. Same across a fork - the child inherits a copy of the
target stack of the parent. While the target stacks are copied, the
targets themselves are not. Instead, target_ops is made a
refcounted_object, which means that target_ops instances are
refcounted, which each inferior counting for a reference.
What if you want to create an inferior and connect it to some _other_
target? For that, this commit introduces a new "add-inferior
-no-connection" option that makes the new inferior not share the
current inferior's target. So you could do:
(gdb) target extended-remote :9999
Remote debugging using :9999
...
(gdb) add-inferior -no-connection
[New inferior 2]
Added inferior 2
(gdb) inferior 2
[Switching to inferior 2 [<null>] (<noexec>)]
(gdb) info inferiors
Num Description Executable
1 process 18401 target:/home/pedro/tmp/main
* 2 <null>
(gdb) tar extended-remote :10000
Remote debugging using :10000
...
(gdb) info inferiors
Num Description Executable
1 process 18401 target:/home/pedro/tmp/main
* 2 process 18450 target:/home/pedro/tmp/main
(gdb)
A following patch will extended "info inferiors" to include a column
indicating which connection an inferior is bound to, along with a
couple other UI tweaks.
Other than that, debugging is the same as before. Users interact with
inferiors and threads as before. The only difference is that
inferiors may be bound to processes running in different machines.
That's pretty much all there is to it in terms of noticeable UI
changes.
On to implementation.
Since we can be connected to different systems at the same time, a
ptid_t is no longer a unique identifier. Instead a thread can be
identified by a pair of ptid_t and 'process_stratum_target *', the
later being the instance of the process_stratum target that owns the
process/thread. Note that process_stratum_target inherits from
target_ops, and all process_stratum targets inherit from
process_stratum_target. In earlier patches, many places in gdb were
converted to refer to threads by thread_info pointer instead of
ptid_t, but there are still places in gdb where we start with a
pid/tid and need to find the corresponding inferior or thread_info
objects. So you'll see in the patch many places adding a
process_stratum_target parameter to functions that used to take only a
ptid_t.
Since each inferior has its own target stack now, we can always find
the process_stratum target for an inferior. That is done via a
inf->process_target() convenience method.
Since each inferior has its own target stack, we need to handle the
"beneath" calls when servicing target calls. The solution I settled
with is just to make sure to switch the current inferior to the
inferior you want before making a target call. Not relying on global
context is just not feasible in current GDB. Fortunately, there
aren't that many places that need to do that, because generally most
code that calls target methods already has the current context
pointing to the right inferior/thread. Note, to emphasize -- there's
no method to "switch to this target stack". Instead, you switch the
current inferior, and that implicitly switches the target stack.
In some spots, we need to iterate over all inferiors so that we reach
all target stacks.
Native targets are still singletons. There's always only a single
instance of such targets.
Remote targets however, we'll have one instance per remote connection.
The exec target is still a singleton. There's only one instance. I
did not see the point of instanciating more than one exec_target
object.
After vfork, we need to make sure to push the exec target on the new
inferior. See exec_on_vfork.
For type safety, functions that need a {target, ptid} pair to identify
a thread, take a process_stratum_target pointer for target parameter
instead of target_ops *. Some shared code in gdb/nat/ also need to
gain a target pointer parameter. This poses an issue, since gdbserver
doesn't have process_stratum_target, only target_ops. To fix this,
this commit renames gdbserver's target_ops to process_stratum_target.
I think this makes sense. There's no concept of target stack in
gdbserver, and gdbserver's target_ops really implements a
process_stratum-like target.
The thread and inferior iterator functions also gain
process_stratum_target parameters. These are used to be able to
iterate over threads and inferiors of a given target. Following usual
conventions, if the target pointer is null, then we iterate over
threads and inferiors of all targets.
I tried converting "add-inferior" to the gdb::option framework, as a
preparatory patch, but that stumbled on the fact that gdb::option does
not support file options yet, for "add-inferior -exec". I have a WIP
patchset that adds that, but it's not a trivial patch, mainly due to
need to integrate readline's filename completion, so I deferred that
to some other time.
In infrun.c/infcmd.c, the main change is that we need to poll events
out of all targets. See do_target_wait. Right after collecting an
event, we switch the current inferior to an inferior bound to the
target that reported the event, so that target methods can be used
while handling the event. This makes most of the code transparent to
multi-targets. See fetch_inferior_event.
infrun.c:stop_all_threads is interesting -- in this function we need
to stop all threads of all targets. What the function does is send an
asynchronous stop request to all threads, and then synchronously waits
for events, with target_wait, rinse repeat, until all it finds are
stopped threads. Now that we have multiple targets, it's not
efficient to synchronously block in target_wait waiting for events out
of one target. Instead, we implement a mini event loop, with
interruptible_select, select'ing on one file descriptor per target.
For this to work, we need to be able to ask the target for a waitable
file descriptor. Such file descriptors already exist, they are the
descriptors registered in the main event loop with add_file_handler,
inside the target_async implementations. This commit adds a new
target_async_wait_fd target method that just returns the file
descriptor in question. See wait_one / stop_all_threads in infrun.c.
The 'threads_executing' global is made a per-target variable. Since
it is only relevant to process_stratum_target targets, this is where
it is put, instead of in target_ops.
You'll notice that remote.c includes some FIXME notes. These refer to
the fact that the global arrays that hold data for the remote packets
supported are still globals. For example, if we connect to two
different servers/stubs, then each might support different remote
protocol features. They might even be different architectures, like
e.g., one ARM baremetal stub, and a x86 gdbserver, to debug a
host/controller scenario as a single program. That isn't going to
work correctly today, because of said globals. I'm leaving fixing
that for another pass, since it does not appear to be trivial, and I'd
rather land the base work first. It's already useful to be able to
debug multiple instances of the same server (e.g., a distributed
cluster, where you have full control over the servers installed), so I
think as is it's already reasonable incremental progress.
Current limitations:
- You can only resume more that one target at the same time if all
targets support asynchronous debugging, and support non-stop mode.
It should be possible to support mixed all-stop + non-stop
backends, but that is left for another time. This means that
currently in order to do multi-target with gdbserver you need to
issue "maint set target-non-stop on". I would like to make that
mode be the default, but we're not there yet. Note that I'm
talking about how the target backend works, only. User-visible
all-stop mode works just fine.
- As explained above, connecting to different remote servers at the
same time is likely to produce bad results if they don't support the
exact set of RSP features.
FreeBSD updates courtesy of John Baldwin.
gdb/ChangeLog:
2020-01-10 Pedro Alves <palves@redhat.com>
John Baldwin <jhb@FreeBSD.org>
* aarch64-linux-nat.c
(aarch64_linux_nat_target::thread_architecture): Adjust.
* ada-tasks.c (print_ada_task_info): Adjust find_thread_ptid call.
(task_command_1): Likewise.
* aix-thread.c (sync_threadlists, aix_thread_target::resume)
(aix_thread_target::wait, aix_thread_target::fetch_registers)
(aix_thread_target::store_registers)
(aix_thread_target::thread_alive): Adjust.
* amd64-fbsd-tdep.c: Include "inferior.h".
(amd64fbsd_get_thread_local_address): Pass down target.
* amd64-linux-nat.c (ps_get_thread_area): Use ps_prochandle
thread's gdbarch instead of target_gdbarch.
* break-catch-sig.c (signal_catchpoint_print_it): Adjust call to
get_last_target_status.
* break-catch-syscall.c (print_it_catch_syscall): Likewise.
* breakpoint.c (breakpoints_should_be_inserted_now): Consider all
inferiors.
(update_inserted_breakpoint_locations): Skip if inferiors with no
execution.
(update_global_location_list): When handling moribund locations,
find representative inferior for location's pspace, and use thread
count of its process_stratum target.
* bsd-kvm.c (bsd_kvm_target_open): Pass target down.
* bsd-uthread.c (bsd_uthread_target::wait): Use
as_process_stratum_target and adjust thread_change_ptid and
add_thread calls.
(bsd_uthread_target::update_thread_list): Use
as_process_stratum_target and adjust find_thread_ptid,
thread_change_ptid and add_thread calls.
* btrace.c (maint_btrace_packet_history_cmd): Adjust
find_thread_ptid call.
* corelow.c (add_to_thread_list): Adjust add_thread call.
(core_target_open): Adjust add_thread_silent and thread_count
calls.
(core_target::pid_to_str): Adjust find_inferior_ptid call.
* ctf.c (ctf_target_open): Adjust add_thread_silent call.
* event-top.c (async_disconnect): Pop targets from all inferiors.
* exec.c (add_target_sections): Push exec target on all inferiors
sharing the program space.
(remove_target_sections): Remove the exec target from all
inferiors sharing the program space.
(exec_on_vfork): New.
* exec.h (exec_on_vfork): Declare.
* fbsd-nat.c (fbsd_add_threads): Add fbsd_nat_target parameter.
Pass it down.
(fbsd_nat_target::update_thread_list): Adjust.
(fbsd_nat_target::resume): Adjust.
(fbsd_handle_debug_trap): Add fbsd_nat_target parameter. Pass it
down.
(fbsd_nat_target::wait, fbsd_nat_target::post_attach): Adjust.
* fbsd-tdep.c (fbsd_corefile_thread): Adjust
get_thread_arch_regcache call.
* fork-child.c (gdb_startup_inferior): Pass target down to
startup_inferior and set_executing.
* gdbthread.h (struct process_stratum_target): Forward declare.
(add_thread, add_thread_silent, add_thread_with_info)
(in_thread_list): Add process_stratum_target parameter.
(find_thread_ptid(inferior*, ptid_t)): New overload.
(find_thread_ptid, thread_change_ptid): Add process_stratum_target
parameter.
(all_threads()): Delete overload.
(all_threads, all_non_exited_threads): Add process_stratum_target
parameter.
(all_threads_safe): Use brace initialization.
(thread_count): Add process_stratum_target parameter.
(set_resumed, set_running, set_stop_requested, set_executing)
(threads_are_executing, finish_thread_state): Add
process_stratum_target parameter.
(switch_to_thread): Use is_current_thread.
* i386-fbsd-tdep.c: Include "inferior.h".
(i386fbsd_get_thread_local_address): Pass down target.
* i386-linux-nat.c (i386_linux_nat_target::low_resume): Adjust.
* inf-child.c (inf_child_target::maybe_unpush_target): Remove
have_inferiors check.
* inf-ptrace.c (inf_ptrace_target::create_inferior)
(inf_ptrace_target::attach): Adjust.
* infcall.c (run_inferior_call): Adjust.
* infcmd.c (run_command_1): Pass target to
scoped_finish_thread_state.
(proceed_thread_callback): Skip inferiors with no execution.
(continue_command): Rename 'all_threads' local to avoid hiding
'all_threads' function. Adjust get_last_target_status call.
(prepare_one_step): Adjust set_running call.
(signal_command): Use user_visible_resume_target. Compare thread
pointers instead of inferior_ptid.
(info_program_command): Adjust to pass down target.
(attach_command): Mark target's 'thread_executing' flag.
(stop_current_target_threads_ns): New, factored out from ...
(interrupt_target_1): ... this. Switch inferior before making
target calls.
* inferior-iter.h
(struct all_inferiors_iterator, struct all_inferiors_range)
(struct all_inferiors_safe_range)
(struct all_non_exited_inferiors_range): Filter on
process_stratum_target too. Remove explicit.
* inferior.c (inferior::inferior): Push dummy target on target
stack.
(find_inferior_pid, find_inferior_ptid, number_of_live_inferiors):
Add process_stratum_target parameter, and pass it down.
(have_live_inferiors): Adjust.
(switch_to_inferior_and_push_target): New.
(add_inferior_command, clone_inferior_command): Handle
"-no-connection" parameter. Use
switch_to_inferior_and_push_target.
(_initialize_inferior): Mention "-no-connection" option in
the help of "add-inferior" and "clone-inferior" commands.
* inferior.h: Include "process-stratum-target.h".
(interrupt_target_1): Use bool.
(struct inferior) <push_target, unpush_target, target_is_pushed,
find_target_beneath, top_target, process_target, target_at,
m_stack>: New.
(discard_all_inferiors): Delete.
(find_inferior_pid, find_inferior_ptid, number_of_live_inferiors)
(all_inferiors, all_non_exited_inferiors): Add
process_stratum_target parameter.
* infrun.c: Include "gdb_select.h" and <unordered_map>.
(target_last_proc_target): New global.
(follow_fork_inferior): Push target on new inferior. Pass target
to add_thread_silent. Call exec_on_vfork. Handle target's
reference count.
(follow_fork): Adjust get_last_target_status call. Also consider
target.
(follow_exec): Push target on new inferior.
(struct execution_control_state) <target>: New field.
(user_visible_resume_target): New.
(do_target_resume): Call target_async.
(resume_1): Set target's threads_executing flag. Consider resume
target.
(commit_resume_all_targets): New.
(proceed): Also consider resume target. Skip threads of inferiors
with no execution. Commit resumtion in all targets.
(start_remote): Pass current inferior to wait_for_inferior.
(infrun_thread_stop_requested): Consider target as well. Pass
thread_info pointer to clear_inline_frame_state instead of ptid.
(infrun_thread_thread_exit): Consider target as well.
(random_pending_event_thread): New inferior parameter. Use it.
(do_target_wait): Rename to ...
(do_target_wait_1): ... this. Add inferior parameter, and pass it
down.
(threads_are_resumed_pending_p, do_target_wait): New.
(prepare_for_detach): Adjust calls.
(wait_for_inferior): New inferior parameter. Handle it. Use
do_target_wait_1 instead of do_target_wait.
(fetch_inferior_event): Adjust. Switch to representative
inferior. Pass target down.
(set_last_target_status): Add process_stratum_target parameter.
Save target in global.
(get_last_target_status): Add process_stratum_target parameter and
handle it.
(nullify_last_target_wait_ptid): Clear 'target_last_proc_target'.
(context_switch): Check inferior_ptid == null_ptid before calling
inferior_thread().
(get_inferior_stop_soon): Pass down target.
(wait_one): Rename to ...
(poll_one_curr_target): ... this.
(struct wait_one_event): New.
(wait_one): New.
(stop_all_threads): Adjust.
(handle_no_resumed, handle_inferior_event): Adjust to consider the
event's target.
(switch_back_to_stepped_thread): Also consider target.
(print_stop_event): Update.
(normal_stop): Update. Also consider the resume target.
* infrun.h (wait_for_inferior): Remove declaration.
(user_visible_resume_target): New declaration.
(get_last_target_status, set_last_target_status): New
process_stratum_target parameter.
* inline-frame.c (clear_inline_frame_state(ptid_t)): Add
process_stratum_target parameter, and use it.
(clear_inline_frame_state (thread_info*)): New.
* inline-frame.c (clear_inline_frame_state(ptid_t)): Add
process_stratum_target parameter.
(clear_inline_frame_state (thread_info*)): Declare.
* linux-fork.c (delete_checkpoint_command): Pass target down to
find_thread_ptid.
(checkpoint_command): Adjust.
* linux-nat.c (linux_nat_target::follow_fork): Switch to thread
instead of just tweaking inferior_ptid.
(linux_nat_switch_fork): Pass target down to thread_change_ptid.
(exit_lwp): Pass target down to find_thread_ptid.
(attach_proc_task_lwp_callback): Pass target down to
add_thread/set_running/set_executing.
(linux_nat_target::attach): Pass target down to
thread_change_ptid.
(get_detach_signal): Pass target down to find_thread_ptid.
Consider last target status's target.
(linux_resume_one_lwp_throw, resume_lwp)
(linux_handle_syscall_trap, linux_handle_extended_wait, wait_lwp)
(stop_wait_callback, save_stop_reason, linux_nat_filter_event)
(linux_nat_wait_1, resume_stopped_resumed_lwps): Pass target down.
(linux_nat_target::async_wait_fd): New.
(linux_nat_stop_lwp, linux_nat_target::thread_address_space): Pass
target down.
* linux-nat.h (linux_nat_target::async_wait_fd): Declare.
* linux-tdep.c (get_thread_arch_regcache): Pass target down.
* linux-thread-db.c (struct thread_db_info::process_target): New
field.
(add_thread_db_info): Save target.
(get_thread_db_info): New process_stratum_target parameter. Also
match target.
(delete_thread_db_info): New process_stratum_target parameter.
Also match target.
(thread_from_lwp): Adjust to pass down target.
(thread_db_notice_clone): Pass down target.
(check_thread_db_callback): Pass down target.
(try_thread_db_load_1): Always push the thread_db target.
(try_thread_db_load, record_thread): Pass target down.
(thread_db_target::detach): Pass target down. Always unpush the
thread_db target.
(thread_db_target::wait, thread_db_target::mourn_inferior): Pass
target down. Always unpush the thread_db target.
(find_new_threads_callback, thread_db_find_new_threads_2)
(thread_db_target::update_thread_list): Pass target down.
(thread_db_target::pid_to_str): Pass current inferior down.
(thread_db_target::get_thread_local_address): Pass target down.
(thread_db_target::resume, maintenance_check_libthread_db): Pass
target down.
* nto-procfs.c (nto_procfs_target::update_thread_list): Adjust.
* procfs.c (procfs_target::procfs_init_inferior): Declare.
(proc_set_current_signal, do_attach, procfs_target::wait): Adjust.
(procfs_init_inferior): Rename to ...
(procfs_target::procfs_init_inferior): ... this and adjust.
(procfs_target::create_inferior, procfs_notice_thread)
(procfs_do_thread_registers): Adjust.
* ppc-fbsd-tdep.c: Include "inferior.h".
(ppcfbsd_get_thread_local_address): Pass down target.
* proc-service.c (ps_xfer_memory): Switch current inferior and
program space as well.
(get_ps_regcache): Pass target down.
* process-stratum-target.c
(process_stratum_target::thread_address_space)
(process_stratum_target::thread_architecture): Pass target down.
* process-stratum-target.h
(process_stratum_target::threads_executing): New field.
(as_process_stratum_target): New.
* ravenscar-thread.c
(ravenscar_thread_target::update_inferior_ptid): Pass target down.
(ravenscar_thread_target::wait, ravenscar_add_thread): Pass target
down.
* record-btrace.c (record_btrace_target::info_record): Adjust.
(record_btrace_target::record_method)
(record_btrace_target::record_is_replaying)
(record_btrace_target::fetch_registers)
(get_thread_current_frame_id, record_btrace_target::resume)
(record_btrace_target::wait, record_btrace_target::stop): Pass
target down.
* record-full.c (record_full_wait_1): Switch to event thread.
Pass target down.
* regcache.c (regcache::regcache)
(get_thread_arch_aspace_regcache, get_thread_arch_regcache): Add
process_stratum_target parameter and handle it.
(current_thread_target): New global.
(get_thread_regcache): Add process_stratum_target parameter and
handle it. Switch inferior before calling target method.
(get_thread_regcache): Pass target down.
(get_thread_regcache_for_ptid): Pass target down.
(registers_changed_ptid): Add process_stratum_target parameter and
handle it.
(registers_changed_thread, registers_changed): Pass target down.
(test_get_thread_arch_aspace_regcache): New.
(current_regcache_test): Define a couple local test_target_ops
instances and use them for testing.
(readwrite_regcache): Pass process_stratum_target parameter.
(cooked_read_test, cooked_write_test): Pass mock_target down.
* regcache.h (get_thread_regcache, get_thread_arch_regcache)
(get_thread_arch_aspace_regcache): Add process_stratum_target
parameter.
(regcache::target): New method.
(regcache::regcache, regcache::get_thread_arch_aspace_regcache)
(regcache::registers_changed_ptid): Add process_stratum_target
parameter.
(regcache::m_target): New field.
(registers_changed_ptid): Add process_stratum_target parameter.
* remote.c (remote_state::supports_vCont_probed): New field.
(remote_target::async_wait_fd): New method.
(remote_unpush_and_throw): Add remote_target parameter.
(get_current_remote_target): Adjust.
(remote_target::remote_add_inferior): Push target.
(remote_target::remote_add_thread)
(remote_target::remote_notice_new_inferior)
(get_remote_thread_info): Pass target down.
(remote_target::update_thread_list): Skip threads of inferiors
bound to other targets. (remote_target::close): Don't discard
inferiors. (remote_target::add_current_inferior_and_thread)
(remote_target::process_initial_stop_replies)
(remote_target::start_remote)
(remote_target::remote_serial_quit_handler): Pass down target.
(remote_target::remote_unpush_target): New remote_target
parameter. Unpush the target from all inferiors.
(remote_target::remote_unpush_and_throw): New remote_target
parameter. Pass it down.
(remote_target::open_1): Check whether the current inferior has
execution instead of checking whether any inferior is live. Pass
target down.
(remote_target::remote_detach_1): Pass down target. Use
remote_unpush_target.
(extended_remote_target::attach): Pass down target.
(remote_target::remote_vcont_probe): Set supports_vCont_probed.
(remote_target::append_resumption): Pass down target.
(remote_target::append_pending_thread_resumptions)
(remote_target::remote_resume_with_hc, remote_target::resume)
(remote_target::commit_resume): Pass down target.
(remote_target::remote_stop_ns): Check supports_vCont_probed.
(remote_target::interrupt_query)
(remote_target::remove_new_fork_children)
(remote_target::check_pending_events_prevent_wildcard_vcont)
(remote_target::remote_parse_stop_reply)
(remote_target::process_stop_reply): Pass down target.
(first_remote_resumed_thread): New remote_target parameter. Pass
it down.
(remote_target::wait_as): Pass down target.
(unpush_and_perror): New remote_target parameter. Pass it down.
(remote_target::readchar, remote_target::remote_serial_write)
(remote_target::getpkt_or_notif_sane_1)
(remote_target::kill_new_fork_children, remote_target::kill): Pass
down target.
(remote_target::mourn_inferior): Pass down target. Use
remote_unpush_target.
(remote_target::core_of_thread)
(remote_target::remote_btrace_maybe_reopen): Pass down target.
(remote_target::pid_to_exec_file)
(remote_target::thread_handle_to_thread_info): Pass down target.
(remote_target::async_wait_fd): New.
* riscv-fbsd-tdep.c: Include "inferior.h".
(riscv_fbsd_get_thread_local_address): Pass down target.
* sol2-tdep.c (sol2_core_pid_to_str): Pass down target.
* sol-thread.c (sol_thread_target::wait, ps_lgetregs, ps_lsetregs)
(ps_lgetfpregs, ps_lsetfpregs, sol_update_thread_list_callback):
Adjust.
* solib-spu.c (spu_skip_standalone_loader): Pass down target.
* solib-svr4.c (enable_break): Pass down target.
* spu-multiarch.c (parse_spufs_run): Pass down target.
* spu-tdep.c (spu2ppu_sniffer): Pass down target.
* target-delegates.c: Regenerate.
* target.c (g_target_stack): Delete.
(current_top_target): Return the current inferior's top target.
(target_has_execution_1): Refer to the passed-in inferior's top
target.
(target_supports_terminal_ours): Check whether the initial
inferior was already created.
(decref_target): New.
(target_stack::push): Incref/decref the target.
(push_target, push_target, unpush_target): Adjust.
(target_stack::unpush): Defref target.
(target_is_pushed): Return bool. Adjust to refer to the current
inferior's target stack.
(dispose_inferior): Delete, and inline parts ...
(target_preopen): ... here. Only dispose of the current inferior.
(target_detach): Hold strong target reference while detaching.
Pass target down.
(target_thread_name): Add assertion.
(target_resume): Pass down target.
(target_ops::beneath, find_target_at): Adjust to refer to the
current inferior's target stack.
(get_dummy_target): New.
(target_pass_ctrlc): Pass the Ctrl-C to the first inferior that
has a thread running.
(initialize_targets): Rename to ...
(_initialize_target): ... this.
* target.h: Include "gdbsupport/refcounted-object.h".
(struct target_ops): Inherit refcounted_object.
(target_ops::shortname, target_ops::longname): Make const.
(target_ops::async_wait_fd): New method.
(decref_target): Declare.
(struct target_ops_ref_policy): New.
(target_ops_ref): New typedef.
(get_dummy_target): Declare function.
(target_is_pushed): Return bool.
* thread-iter.c (all_matching_threads_iterator::m_inf_matches)
(all_matching_threads_iterator::all_matching_threads_iterator):
Handle filter target.
* thread-iter.h (struct all_matching_threads_iterator, struct
all_matching_threads_range, class all_non_exited_threads_range):
Filter by target too. Remove explicit.
* thread.c (threads_executing): Delete.
(inferior_thread): Pass down current inferior.
(clear_thread_inferior_resources): Pass down thread pointer
instead of ptid_t.
(add_thread_silent, add_thread_with_info, add_thread): Add
process_stratum_target parameter. Use it for thread and inferior
searches.
(is_current_thread): New.
(thread_info::deletable): Use it.
(find_thread_ptid, thread_count, in_thread_list)
(thread_change_ptid, set_resumed, set_running): New
process_stratum_target parameter. Pass it down.
(set_executing): New process_stratum_target parameter. Pass it
down. Adjust reference to 'threads_executing'.
(threads_are_executing): New process_stratum_target parameter.
Adjust reference to 'threads_executing'.
(set_stop_requested, finish_thread_state): New
process_stratum_target parameter. Pass it down.
(switch_to_thread): Also match inferior.
(switch_to_thread): New process_stratum_target parameter. Pass it
down.
(update_threads_executing): Reimplement.
* top.c (quit_force): Pop targets from all inferior.
(gdb_init): Don't call initialize_targets.
* windows-nat.c (windows_nat_target) <get_windows_debug_event>:
Declare.
(windows_add_thread, windows_delete_thread): Adjust.
(get_windows_debug_event): Rename to ...
(windows_nat_target::get_windows_debug_event): ... this. Adjust.
* tracefile-tfile.c (tfile_target_open): Pass down target.
* gdbsupport/common-gdbthread.h (struct process_stratum_target):
Forward declare.
(switch_to_thread): Add process_stratum_target parameter.
* mi/mi-interp.c (mi_on_resume_1): Add process_stratum_target
parameter. Use it.
(mi_on_resume): Pass target down.
* nat/fork-inferior.c (startup_inferior): Add
process_stratum_target parameter. Pass it down.
* nat/fork-inferior.h (startup_inferior): Add
process_stratum_target parameter.
* python/py-threadevent.c (py_get_event_thread): Pass target down.
gdb/gdbserver/ChangeLog:
2020-01-10 Pedro Alves <palves@redhat.com>
* fork-child.c (post_fork_inferior): Pass target down to
startup_inferior.
* inferiors.c (switch_to_thread): Add process_stratum_target
parameter.
* lynx-low.c (lynx_target_ops): Now a process_stratum_target.
* nto-low.c (nto_target_ops): Now a process_stratum_target.
* linux-low.c (linux_target_ops): Now a process_stratum_target.
* remote-utils.c (prepare_resume_reply): Pass the target to
switch_to_thread.
* target.c (the_target): Now a process_stratum_target.
(done_accessing_memory): Pass the target to switch_to_thread.
(set_target_ops): Ajust to use process_stratum_target.
* target.h (struct target_ops): Rename to ...
(struct process_stratum_target): ... this.
(the_target, set_target_ops): Adjust.
(prepare_to_access_memory): Adjust comment.
* win32-low.c (child_xfer_memory): Adjust to use
process_stratum_target.
(win32_target_ops): Now a process_stratum_target.
I went through most of the spots that include readline.h and, when
appropriate, either removed the include or changed it to include
tilde.h.
Note that remote-sim.c and bsd-kvm.c could probably include tilde.h
instead, but I did not change these. I think I can't build the
latter, and I didn't want to set up a sim build for the former.
Tested by rebuilding.
gdb/ChangeLog
2019-11-06 Tom Tromey <tom@tromey.com>
* tui/tui-interp.c: Don't include readline.h.
* tui/tui-hooks.c: Don't include readline.h.
* symmisc.c: Include tilde.h, not readline.h.
* symfile.c: Include tilde.h, not readline.h.
* source.c: Include tilde.h, not readline.h.
* solib.c: Include tilde.h, not readline.h.
* psymtab.c: Include tilde.h, not readline.h.
* exec.c: Include tilde.h, not readline.h.
* corelow.c: Include tilde.h, not readline.h.
* cli/cli-dump.c: Include tilde.h, not readline.h.
* cli/cli-cmds.c: Don't include readline.h.
Change-Id: I60487a190c43128b800ef77517d1ab42957571d7
This makes exception handling more efficient in a few spots, through
the use of const- and rvalue-references.
I wrote this patch by commenting out the gdb_exception copy
constructor and then examining the resulting error messages one by
one, introducing the use of std::move where appropriate.
gdb/ChangeLog
2019-04-25 Tom Tromey <tromey@adacore.com>
* xml-support.c (struct gdb_xml_parser) <set_error>: Take an
rvalue reference.
(gdb_xml_start_element_wrapper, gdb_xml_end_element_wrapper)
(gdb_xml_parser::parse): Use std::move.
* python/python-internal.h (gdbpy_convert_exception): Take a const
reference.
* python/py-value.c (valpy_getitem, valpy_nonzero): Use
std::move.
* python/py-utils.c (gdbpy_convert_exception): Take a const
reference.
* python/py-inferior.c (infpy_write_memory, infpy_search_memory):
Use std::move.
* python/py-breakpoint.c (bppy_set_condition, bppy_set_commands):
Use std::move.
* mi/mi-main.c (mi_print_exception): Take a const reference.
* main.c (handle_command_errors): Take a const reference.
* linespec.c (parse_linespec): Use std::move.
* infcall.c (run_inferior_call): Use std::move.
(call_function_by_hand_dummy): Use std::move.
* exec.c (try_open_exec_file): Use std::move.
* exceptions.h (exception_print, exception_fprintf)
(exception_print_same): Update.
* exceptions.c (print_exception, exception_print)
(exception_fprintf, exception_print_same): Change parameters to
const reference.
* event-top.c (gdb_rl_callback_read_char_wrapper): Update.
* common/new-op.c: Use std::move.
* common/common-exceptions.h (struct gdb_exception): Add move
constructor.
(struct gdb_exception_error, struct gdb_exception_quit, struct
gdb_quit_bad_alloc): Change constructor to move constructor.
(throw_exception): Change parameter to rvalue reference.
* common/common-exceptions.c (throw_exception): Take rvalue
reference.
* cli/cli-interp.c (safe_execute_command): Use std::move.
* breakpoint.c (insert_bp_location, location_to_sals): Use
std::move.
This rewrites gdb's TRY/CATCH to plain C++ try/catch. The patch was
largely written by script, though one change (to a comment in
common-exceptions.h) was reverted by hand.
gdb/ChangeLog
2019-04-08 Tom Tromey <tom@tromey.com>
* xml-support.c: Use C++ exception handling.
* x86-linux-nat.c: Use C++ exception handling.
* windows-nat.c: Use C++ exception handling.
* varobj.c: Use C++ exception handling.
* value.c: Use C++ exception handling.
* valprint.c: Use C++ exception handling.
* valops.c: Use C++ exception handling.
* unittests/parse-connection-spec-selftests.c: Use C++ exception
handling.
* unittests/cli-utils-selftests.c: Use C++ exception handling.
* typeprint.c: Use C++ exception handling.
* tui/tui.c: Use C++ exception handling.
* tracefile-tfile.c: Use C++ exception handling.
* top.c: Use C++ exception handling.
* thread.c: Use C++ exception handling.
* target.c: Use C++ exception handling.
* symmisc.c: Use C++ exception handling.
* symfile-mem.c: Use C++ exception handling.
* stack.c: Use C++ exception handling.
* sparc64-linux-tdep.c: Use C++ exception handling.
* solib.c: Use C++ exception handling.
* solib-svr4.c: Use C++ exception handling.
* solib-spu.c: Use C++ exception handling.
* solib-frv.c: Use C++ exception handling.
* solib-dsbt.c: Use C++ exception handling.
* selftest-arch.c: Use C++ exception handling.
* s390-tdep.c: Use C++ exception handling.
* rust-lang.c: Use C++ exception handling.
* rust-exp.y: Use C++ exception handling.
* rs6000-tdep.c: Use C++ exception handling.
* rs6000-aix-tdep.c: Use C++ exception handling.
* riscv-tdep.c: Use C++ exception handling.
* remote.c: Use C++ exception handling.
* remote-fileio.c: Use C++ exception handling.
* record-full.c: Use C++ exception handling.
* record-btrace.c: Use C++ exception handling.
* python/python.c: Use C++ exception handling.
* python/py-value.c: Use C++ exception handling.
* python/py-utils.c: Use C++ exception handling.
* python/py-unwind.c: Use C++ exception handling.
* python/py-type.c: Use C++ exception handling.
* python/py-symbol.c: Use C++ exception handling.
* python/py-record.c: Use C++ exception handling.
* python/py-record-btrace.c: Use C++ exception handling.
* python/py-progspace.c: Use C++ exception handling.
* python/py-prettyprint.c: Use C++ exception handling.
* python/py-param.c: Use C++ exception handling.
* python/py-objfile.c: Use C++ exception handling.
* python/py-linetable.c: Use C++ exception handling.
* python/py-lazy-string.c: Use C++ exception handling.
* python/py-infthread.c: Use C++ exception handling.
* python/py-inferior.c: Use C++ exception handling.
* python/py-gdb-readline.c: Use C++ exception handling.
* python/py-framefilter.c: Use C++ exception handling.
* python/py-frame.c: Use C++ exception handling.
* python/py-finishbreakpoint.c: Use C++ exception handling.
* python/py-cmd.c: Use C++ exception handling.
* python/py-breakpoint.c: Use C++ exception handling.
* python/py-arch.c: Use C++ exception handling.
* printcmd.c: Use C++ exception handling.
* ppc-linux-tdep.c: Use C++ exception handling.
* parse.c: Use C++ exception handling.
* p-valprint.c: Use C++ exception handling.
* objc-lang.c: Use C++ exception handling.
* mi/mi-main.c: Use C++ exception handling.
* mi/mi-interp.c: Use C++ exception handling.
* mi/mi-cmd-stack.c: Use C++ exception handling.
* mi/mi-cmd-break.c: Use C++ exception handling.
* main.c: Use C++ exception handling.
* linux-thread-db.c: Use C++ exception handling.
* linux-tdep.c: Use C++ exception handling.
* linux-nat.c: Use C++ exception handling.
* linux-fork.c: Use C++ exception handling.
* linespec.c: Use C++ exception handling.
* language.c: Use C++ exception handling.
* jit.c: Use C++ exception handling.
* infrun.c: Use C++ exception handling.
* infcmd.c: Use C++ exception handling.
* infcall.c: Use C++ exception handling.
* inf-loop.c: Use C++ exception handling.
* i386-tdep.c: Use C++ exception handling.
* i386-linux-tdep.c: Use C++ exception handling.
* guile/scm-value.c: Use C++ exception handling.
* guile/scm-type.c: Use C++ exception handling.
* guile/scm-symtab.c: Use C++ exception handling.
* guile/scm-symbol.c: Use C++ exception handling.
* guile/scm-pretty-print.c: Use C++ exception handling.
* guile/scm-ports.c: Use C++ exception handling.
* guile/scm-param.c: Use C++ exception handling.
* guile/scm-math.c: Use C++ exception handling.
* guile/scm-lazy-string.c: Use C++ exception handling.
* guile/scm-frame.c: Use C++ exception handling.
* guile/scm-disasm.c: Use C++ exception handling.
* guile/scm-cmd.c: Use C++ exception handling.
* guile/scm-breakpoint.c: Use C++ exception handling.
* guile/scm-block.c: Use C++ exception handling.
* guile/guile-internal.h: Use C++ exception handling.
* gnu-v3-abi.c: Use C++ exception handling.
* gdbtypes.c: Use C++ exception handling.
* frame.c: Use C++ exception handling.
* frame-unwind.c: Use C++ exception handling.
* fbsd-tdep.c: Use C++ exception handling.
* f-valprint.c: Use C++ exception handling.
* exec.c: Use C++ exception handling.
* event-top.c: Use C++ exception handling.
* event-loop.c: Use C++ exception handling.
* eval.c: Use C++ exception handling.
* dwarf2read.c: Use C++ exception handling.
* dwarf2loc.c: Use C++ exception handling.
* dwarf2-frame.c: Use C++ exception handling.
* dwarf2-frame-tailcall.c: Use C++ exception handling.
* dwarf-index-write.c: Use C++ exception handling.
* dwarf-index-cache.c: Use C++ exception handling.
* dtrace-probe.c: Use C++ exception handling.
* disasm-selftests.c: Use C++ exception handling.
* darwin-nat.c: Use C++ exception handling.
* cp-valprint.c: Use C++ exception handling.
* cp-support.c: Use C++ exception handling.
* cp-abi.c: Use C++ exception handling.
* corelow.c: Use C++ exception handling.
* completer.c: Use C++ exception handling.
* compile/compile-object-run.c: Use C++ exception handling.
* compile/compile-object-load.c: Use C++ exception handling.
* compile/compile-cplus-symbols.c: Use C++ exception handling.
* compile/compile-c-symbols.c: Use C++ exception handling.
* common/selftest.c: Use C++ exception handling.
* common/new-op.c: Use C++ exception handling.
* cli/cli-script.c: Use C++ exception handling.
* cli/cli-interp.c: Use C++ exception handling.
* cli/cli-cmds.c: Use C++ exception handling.
* c-varobj.c: Use C++ exception handling.
* btrace.c: Use C++ exception handling.
* breakpoint.c: Use C++ exception handling.
* break-catch-throw.c: Use C++ exception handling.
* arch-utils.c: Use C++ exception handling.
* amd64-tdep.c: Use C++ exception handling.
* ada-valprint.c: Use C++ exception handling.
* ada-typeprint.c: Use C++ exception handling.
* ada-lang.c: Use C++ exception handling.
* aarch64-tdep.c: Use C++ exception handling.
gdb/gdbserver/ChangeLog
2019-04-08 Tom Tromey <tom@tromey.com>
* server.c: Use C++ exception handling.
* linux-low.c: Use C++ exception handling.
* gdbreplay.c: Use C++ exception handling.
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.
Given that a target's stratum is a property of the type, and not of an
instance of the type, get rid of to_stratum data field and replace it
with a virtual method.
I.e., when we have e.g., 10 target remote instances active, there's no
need for each of the instances to have their own to_stratum copy.
gdb/ChangeLog:
2018-11-30 Pedro Alves <palves@redhat.com>
* aix-thread.c (aix_thread_target) <aix_thread_target>: Delete.
<stratum>: New override.
* bfd-target.c (aix_thread_target) <aix_thread_target>: Delete.
<stratum>: New override.
* bsd-uthread.c (bsd_uthread_target) <bsd_uthread_target>: Delete.
<stratum>: New override.
* exec.c (exec_target) <exec_target>: Delete.
<stratum>: New override.
* gdbarch-selftests.c (register_to_value_test): Adjust to use the
stratum method instead of the to_stratum field.
* linux-thread-db.c (thread_db_target) <thread_db_target>: Delete.
<stratum>: New override.
(thread_db_target::thread_db_target): Delete.
* make-target-delegates (print_class): Don't print a ctor
declaration. Print a stratum method override declaration.
* process-stratum-target.h (process_stratum_target)
<process_stratum_target>: Delete.
<stratum>: New override.
* ravenscar-thread.c (ravenscar_thread_target)
<ravenscar_thread_target>: Delete.
<stratum>: New override.
* record-btrace.c (record_btrace_target)
<record_btrace_target>: Delete.
<stratum>: New override.
* record-full.c (record_full_base_target)
<record_full_base_target>: Delete.
<stratum>: New override.
* record.c (record_disconnect, record_detach)
(record_mourn_inferior, record_kill): Adjust to use the stratum
method instead of the to_stratum field.
* regcache.c (cooked_read_test, cooked_write_test): Likewise.
* sol-thread.c (sol_thread_target)
<sol_thread_target>: Delete.
<stratum>: New override.
* spu-multiarch.c (spu_multiarch_target)
<spu_multiarch_target>: Delete.
<stratum>: New override.
* target-delegates.c: Regenerate.
* target.c (target_stack::push, target_stack::unpush)
(pop_all_targets_above, pop_all_targets_at_and_above)
(info_target_command, target_require_runnable)
(target_stack::find_beneath): Adjust to use the stratum method
instead of the to_stratum field.
(dummy_target::dummy_target): Delete.
(dummy_target::stratum): New.
(debug_target::debug_target): Delete.
(debug_target::stratum): New.
(maintenance_print_target_stack): Adjust to use the stratum method
instead of the to_stratum field.
* target.h (struct target_ops) <stratum>: New method.
<to_stratum>: Delete.
<is_pushed>: Adjust to use the stratum method
instead of the to_stratum field.
This removes a cleanup from try_open_exec_file, using std::string to
manage the storage instead.
gdb/ChangeLog
2018-09-13 Tom Tromey <tom@tromey.com>
* exec.c (try_open_exec_file): Use std::string.
This changes gdb_bfd_errmsg to return a std::string, removing a
cleanup. This approach may be slightly less efficient than the
previous code, but I don't believe this is very important in this
situation.
gdb/ChangeLog
2018-09-13 Tom Tromey <tom@tromey.com>
* utils.h (gdb_bfd_errmsg): Return std::string.
* exec.c (exec_file_attach): Update.
* compile/compile-object-load.c (compile_object_load): Update.
* utils.c (gdb_bfd_errmsg): Return std::string.
Currently, to open a target, with "target TARGET_NAME", GDB finds the
target_ops instance with "TARGET_NAME" as short name, and then calls
its target_ops::open virtual method. In reality, there's no actual
target/name lookup, a pointer to the target_ops object was associated
with the "target TARGET_NAME" command at add_target time (when GDB is
initialized), as the command's context.
This creates a chicken and egg situation. Consider the case of
wanting to open multiple remote connections. We want to be able to
have one remote target_ops instance per connection, but, if we're not
connected yet, so we don't yet have an instance to call target->open()
on...
This patch fixes this by separating out common info about a target_ops
to a separate structure (shortname, longname, doc), and changing the
add_target routine to take a reference to such an object instead of a
pointer to a target_ops, and a pointer to a factory function that is
responsible to open an instance of the corresponding target when the
user types "target TARGET_NAME".
-extern void add_target (struct target_ops *);
+extern void add_target (const target_info &info, target_open_ftype *func);
I.e. this factory function replaces the target_ops::open virtual
method.
For static/singleton targets, nothing changes, the target_open_ftype
function pushes the global target_ops instance on the target stack.
At target_close time, the connection is tor down, but the global
target_ops object remains live.
However, targets that support being open multiple times will make
their target_open_ftype routine allocate a new target_ops instance on
the heap [e.g., new remote_target()], and push that on the stack. At
target_close time, the new object is destroyed (by the
target_ops::close virtual method).
Both the core target and the remote targets will support being open
multiple times (others could/should too, but those were my stopping
point), but not in this patch yet. We need to get rid of more globals
first before that'd be useful.
Native targets are somewhat special, given find_default_run_target &
friends. Those routines also expect to return a target_ops pointer,
even before we've open the target. However, we'll never need more
than one instance of the native target, so we can assume/require that
native targets are global/simpletons, and have the backends register a
pointer to the native target_ops. Since all native targets inherit
inf_child_target, we can centralize that registration. See
add_inf_child_target, get_native_target/set_native_target and
find_default_run_target.
gdb/ChangeLog:
2018-05-02 Pedro Alves <palves@redhat.com>
* aarch64-fbsd-nat.c (_initialize_aarch64_fbsd_nat): Use
add_inf_child_target.
* aarch64-linux-nat.c (_initialize_aarch64_linux_nat): Use
add_inf_child_target.
* aix-thread.c (aix_thread_target_info): New.
(aix_thread_target) <shortname, longname, doc>: Delete.
<info>: New.
* alpha-bsd-nat.c (_initialize_alphabsd_nat): Use
add_inf_child_target.
* alpha-linux-nat.c (_initialize_alpha_linux_nat): Use
add_inf_child_target.
* amd64-fbsd-nat.c (_initialize_amd64fbsd_nat): Use
add_inf_child_target.
* amd64-linux-nat.c (_initialize_amd64_linux_nat): Use
add_inf_child_target.
* amd64-nbsd-nat.c (_initialize_amd64nbsd_nat): Use
add_inf_child_target.
* amd64-obsd-nat.c (_initialize_amd64obsd_nat): Use
add_inf_child_target.
* arm-fbsd-nat.c (_initialize_arm_fbsd_nat): Use
add_inf_child_target.
* arm-linux-nat.c (_initialize_arm_linux_nat): Use
add_inf_child_target.
* arm-nbsd-nat.c (_initialize_arm_netbsd_nat): Use
add_inf_child_target.
* bfd-target.c (target_bfd_target_info): New.
(target_bfd) <shortname, longname, doc>: Delete.
<info>: New.
* bsd-kvm.c (bsd_kvm_target_info): New.
(bsd_kvm_target) <shortname, longname, doc>: Delete.
<info>: New.
(bsd_kvm_target::open): Rename to ...
(bsd_kvm_target_open): ... this. Adjust.
* bsd-uthread.c (bsd_uthread_target_info): New.
(bsd_uthread_target) <shortname, longname, doc>: Delete.
<info>: New.
* corefile.c (core_file_command): Adjust.
* corelow.c (core_target_info): New.
(core_target) <shortname, longname, doc>: Delete.
<info>: New.
(core_target::open): Rename to ...
(core_target_open): ... this. Adjust.
* ctf.c (ctf_target_info): New.
(ctf_target) <shortname, longname, doc>: Delete.
<info>: New.
(ctf_target::open): Rename to ...
(ctf_target_open): ... this.
(_initialize_ctf): Adjust.
* exec.c (exec_target_info): New.
(exec_target) <shortname, longname, doc>: Delete.
<info>: New.
(exec_target::open): Rename to ...
(exec_target_open): ... this.
* gdbcore.h (core_target_open): Declare.
* go32-nat.c (_initialize_go32_nat): Use add_inf_child_target.
* hppa-linux-nat.c (_initialize_hppa_linux_nat): Use
add_inf_child_target.
* hppa-nbsd-nat.c (_initialize_hppanbsd_nat): Use
add_inf_child_target.
* hppa-obsd-nat.c (_initialize_hppaobsd_nat): Use
add_inf_child_target.
* i386-darwin-nat.c (_initialize_i386_darwin_nat): Use
add_inf_child_target.
* i386-fbsd-nat.c (_initialize_i386fbsd_nat): Use
add_inf_child_target.
* i386-gnu-nat.c (_initialize_i386gnu_nat): Use
add_inf_child_target.
* i386-linux-nat.c (_initialize_i386_linux_nat): Use
add_inf_child_target.
* i386-nbsd-nat.c (_initialize_i386nbsd_nat): Use
add_inf_child_target.
* i386-obsd-nat.c (_initialize_i386obsd_nat): Use
add_inf_child_target.
* ia64-linux-nat.c (_initialize_ia64_linux_nat): Use
add_inf_child_target.
* inf-child.c (inf_child_target_info): New.
(inf_child_target::info): New.
(inf_child_open_target): Remove 'target' parameter. Use
get_native_target instead.
(inf_child_target::open): Delete.
(add_inf_child_target): New.
* inf-child.h (inf_child_target) <shortname, longname, doc, open>:
Delete.
<info>: New.
(add_inf_child_target): Declare.
(inf_child_open_target): Declare.
* linux-thread-db.c (thread_db_target_info): New.
(thread_db_target) <shortname, longname, doc>: Delete.
<info>: New.
* m32r-linux-nat.c (_initialize_m32r_linux_nat): Use
add_inf_child_target.
* m68k-bsd-nat.c (_initialize_m68kbsd_nat): Use
add_inf_child_target.
* m68k-linux-nat.c (_initialize_m68k_linux_nat): Use
add_inf_child_target.
* m88k-bsd-nat.c (_initialize_m88kbsd_nat): Use
add_inf_child_target.
* make-target-delegates (print_class): Adjust.
* mips-fbsd-nat.c (_initialize_mips_fbsd_nat): Use
add_inf_child_target.
* mips-linux-nat.c (_initialize_mips_linux_nat): Use
add_inf_child_target.
* mips-nbsd-nat.c (_initialize_mipsnbsd_nat): Use
add_inf_child_target.
* mips64-obsd-nat.c (_initialize_mips64obsd_nat): Use
add_inf_child_target.
* nto-procfs.c (nto_native_target_info): New.
(nto_procfs_target_native) <shortname, longname, doc>:
Delete.
<info>: New.
(nto_procfs_target_info): New.
(nto_procfs_target_procfs) <shortname, longname, doc>:
Delete.
<info>: New.
(init_procfs_targets): Adjust.
* ppc-fbsd-nat.c (_initialize_ppcfbsd_nat): Use
add_inf_child_target.
* ppc-linux-nat.c (_initialize_ppc_linux_nat): Use
add_inf_child_target.
* ppc-nbsd-nat.c (_initialize_ppcnbsd_nat): Use
add_inf_child_target.
* ppc-obsd-nat.c (_initialize_ppcobsd_nat): Use
add_inf_child_target.
* ravenscar-thread.c (ravenscar_target_info): New.
(ravenscar_thread_target) <shortname, longname, doc>:
Delete.
<info>: New.
* record-btrace.c (record_btrace_target_info):
(record_btrace_target) <shortname, longname, doc>: Delete.
<info>: New.
(record_btrace_target::open): Rename to ...
(record_btrace_target_open): ... this. Adjust.
* record-full.c (record_longname, record_doc): New.
(record_full_base_target) <shortname, longname, doc>: Delete.
<info>: New.
(record_full_target_info): New.
(record_full_target): <shortname>: Delete.
<info>: New.
(record_full_core_open_1, record_full_open_1): Update comments.
(record_full_base_target::open): Rename to ...
(record_full_open): ... this.
(cmd_record_full_restore): Update.
(_initialize_record_full): Update.
* remote-sim.c (remote_sim_target_info): New.
(gdbsim_target) <shortname, longname, doc>: Delete.
<info>: New.
(gdbsim_target::open): Rename to ...
(gdbsim_target_open): ... this.
(_initialize_remote_sim): Adjust.
* remote.c (remote_doc): New.
(remote_target_info): New.
(remote_target) <shortname, longname, doc>: Delete.
<info>: New.
(extended_remote_target_info): New.
(extended_remote_target) <shortname, longname, doc>: Delete.
<info>: New.
(remote_target::open_1): Make static. Adjust.
* rs6000-nat.c (_initialize_rs6000_nat): Use add_inf_child_target.
* s390-linux-nat.c (_initialize_s390_nat): Use
add_inf_child_target.
* sh-nbsd-nat.c (_initialize_shnbsd_nat): Use
add_inf_child_target.
* sol-thread.c (thread_db_target_info): New.
(sol_thread_target) <shortname, longname, doc>: Delete.
<info>: New.
* sparc-linux-nat.c (_initialize_sparc_linux_nat): Use
add_inf_child_target.
* sparc-nbsd-nat.c (_initialize_sparcnbsd_nat): Use
add_inf_child_target.
* sparc64-fbsd-nat.c (_initialize_sparc64fbsd_nat): Use
add_inf_child_target.
* sparc64-linux-nat.c (_initialize_sparc64_linux_nat): Use
add_inf_child_target.
* sparc64-nbsd-nat.c (_initialize_sparc64nbsd_nat): Use
add_inf_child_target.
* sparc64-obsd-nat.c (_initialize_sparc64obsd_nat): Use
add_inf_child_target.
* spu-linux-nat.c (_initialize_spu_nat): Use
add_inf_child_target.
* spu-multiarch.c (spu_multiarch_target_info): New.
(spu_multiarch_target) <shortname, longname, doc>: Delete.
<info>: New.
* target-delegates.c: Regenerate.
* target.c: Include <unordered_map>.
(target_ops_p): Delete.
(DEF_VEC_P(target_ops_p)): Delete.
(target_factories): New.
(test_target_info): New.
(test_target_ops::info): New.
(open_target): Adjust to use target_factories.
(add_target_with_completer): Rename to ...
(add_target): ... this. Change prototype. Register target_info
and open callback in target_factories. Register target_info in
command context instead of target_ops.
(add_target): Delete old implementation.
(add_deprecated_target_alias): Change prototype. Adjust.
(the_native_target): New.
(set_native_target, get_native_target): New.
(find_default_run_target): Use the_native_target.
(find_attach_target, find_run_target): Simplify.
(target_ops::open): Delete.
(dummy_target_info): New.
(dummy_target::shortname, dummy_target::longname)
(dummy_target::doc): Delete.
(dummy_target::info): New.
(debug_target::shortname, debug_target::longname)
(debug_target::doc): Delete.
(debug_target::info): New.
* target.h (struct target_info): New.
(target_ops::~target_ops): Add comment.
(target_ops::info): New.
(target_ops::shortname, target_ops::longname, target_ops::doc): No
longer virtual. Implement in terms of target_info.
(set_native_target, get_native_target): Declare.
(target_open_ftype): New.
(add_target, add_target_with_completer)
(add_deprecated_target_alias): Change prototype.
(test_target) <shortname, longname, doc>: Delete.
<info>: New.
* tilegx-linux-nat.c (_initialize_tile_linux_nat): Use
add_inf_child_target.
* tracefile-tfile.c (tfile_target_info): New.
(tfile_target) <shortname, longname, doc>: Delete.
<info>: New.
(tfile_target::open): Rename to ...
(tfile_target_open): ... this.
(_initialize_tracefile_tfile): Adjust.
* vax-bsd-nat.c (_initialize_vaxbsd_nat): Use
add_inf_child_target.
* windows-nat.c (_initialize_windows_nat): Use
add_inf_child_target.
* xtensa-linux-nat.c (_initialize_xtensa_linux_nat): Use
add_inf_child_target.
After the previous target_ops/C++ patches are all squashed and merged,
this one can go in separately.
This patch adjusts all the target methods to return bool instead of int
when they're returning a boolean.
gdb/ChangeLog:
2018-05-02 Pedro Alves <palves@redhat.com>
* target.h (target_ops)
<stopped_by_sw_breakpoint, supports_stopped_by_sw_breakpoint,
stopped_by_hw_breakpoint, supports_stopped_by_hw_breakpoint,
stopped_by_watchpoint, have_continuable_watchpoint,
stopped_data_address, watchpoint_addr_within_range,
can_accel_watchpoint_condition, can_run, thread_alive,
has_all_memory, has_memory, has_stack, has_registers,
has_execution, can_async_p, is_async_p, supports_non_stop,
always_non_stop_p, can_execute_reverse, supports_multi_process,
supports_enable_disable_tracepoint,
supports_disable_randomization, supports_string_tracing,
supports_evaluation_of_breakpoint_conditions,
can_run_breakpoint_commands, filesystem_is_local,
can_download_tracepoint, get_trace_state_variable_value,
set_trace_notes, get_tib_address, use_agent, can_use_agent,
record_is_replaying, record_will_replay,
augmented_libraries_svr4_read>: Adjust to return bool.
* aarch64-linux-nat.c: All implementations adjusted.
* aix-thread.c: All implementations adjusted.
* arm-linux-nat.c: All implementations adjusted.
* breakpoint.c: All implementations adjusted.
* bsd-kvm.c: All implementations adjusted.
* bsd-uthread.c: All implementations adjusted.
* corelow.c: All implementations adjusted.
* ctf.c: All implementations adjusted.
* darwin-nat.c: All implementations adjusted.
* darwin-nat.h: All implementations adjusted.
* exec.c: All implementations adjusted.
* fbsd-nat.c: All implementations adjusted.
* fbsd-nat.h: All implementations adjusted.
* gnu-nat.c: All implementations adjusted.
* gnu-nat.h: All implementations adjusted.
* go32-nat.c: All implementations adjusted.
* ia64-linux-nat.c: All implementations adjusted.
* inf-child.c: All implementations adjusted.
* inf-child.h: All implementations adjusted.
* inf-ptrace.c: All implementations adjusted.
* inf-ptrace.h: All implementations adjusted.
* linux-nat.c: All implementations adjusted.
* linux-nat.h: All implementations adjusted.
* mips-linux-nat.c: All implementations adjusted.
* nto-procfs.c: All implementations adjusted.
* ppc-linux-nat.c: All implementations adjusted.
* procfs.c: All implementations adjusted.
* ravenscar-thread.c: All implementations adjusted.
* record-btrace.c: All implementations adjusted.
* record-full.c: All implementations adjusted.
* remote-sim.c: All implementations adjusted.
* remote.c: All implementations adjusted.
* s390-linux-nat.c: All implementations adjusted.
* sol-thread.c: All implementations adjusted.
* spu-multiarch.c: All implementations adjusted.
* target-delegates.c: All implementations adjusted.
* target.c: All implementations adjusted.
* target.h: All implementations adjusted.
* tracefile-tfile.c: All implementations adjusted.
* tracefile.c: All implementations adjusted.
* tracefile.h: All implementations adjusted.
* windows-nat.c: All implementations adjusted.
* x86-linux-nat.h: All implementations adjusted.
* x86-nat.h: All implementations adjusted.
I.e., use C++ virtual methods and inheritance instead of tables of
function pointers.
Unfortunately, there's no way to do a smooth transition. ALL native
targets in the tree must be converted at the same time. I've tested
all I could with cross compilers and with help from GCC compile farm,
but naturally I haven't been able to test many of the ports. Still, I
made a best effort to port everything over, and while I expect some
build problems due to typos and such, which should be trivial to fix,
I don't expect any design problems.
* Implementation notes:
- The flattened current_target is gone. References to current_target
or current_target.beneath are replaced with references to
target_stack (the top of the stack) directly.
- To keep "set debug target" working, this adds a new debug_stratum
layer that sits on top of the stack, prints the debug, and delegates
to the target beneath.
In addition, this makes the shortname and longname properties of
target_ops be virtual methods instead of data fields, and makes the
debug target defer those to the target beneath. This is so that
debug code sprinkled around that does "if (debugtarget) ..." can
transparently print the name of the target beneath.
A patch later in the series actually splits out the
shortname/longname methods to a separate structure, but I preferred
to keep that chance separate as it is associated with changing a bit
the design of how targets are registered and open.
- Since you can't check whether a C++ virtual method is overridden,
the old method of checking whether a target_ops implements a method
by comparing the function pointer must be replaced with something
else.
Some cases are fixed by adding a parallel "can_do_foo" target_ops
methods. E.g.,:
+ for (t = target_stack; t != NULL; t = t->beneath)
{
- if (t->to_create_inferior != NULL)
+ if (t->can_create_inferior ())
break;
}
Others are fixed by changing void return type to bool or int return
type, and have the default implementation return false or -1, to
indicate lack of support.
- make-target-delegates was adjusted to generate C++ classes and
methods.
It needed tweaks to grok "virtual" in front of the target method
name, and for the fact that methods are no longer function pointers.
(In particular, the current code parsing the return type was simple
because it could simply parse up until the '(' in '(*to_foo)'.
It now generates a couple C++ classes that inherit target_ops:
dummy_target and debug_target.
Since we need to generate the class declarations as well, i.e., we
need to emit methods twice, we now generate the code in two passes.
- The core_target global is renamed to avoid conflict with the
"core_target" class.
- ctf/tfile targets
init_tracefile_ops is replaced by a base class that is inherited by
both ctf and tfile.
- bsd-uthread
The bsd_uthread_ops_hack hack is gone. It's not needed because
nothing was extending a target created by bsd_uthread_target.
- remote/extended-remote targets
This is a first pass, just enough to C++ify target_ops.
A later pass will convert more free functions to methods, and make
remote_state be truly per remote instance, allowing multiple
simultaneous instances of remote targets.
- inf-child/"native" is converted to an actual base class
(inf_child_target), that is inherited by all native targets.
- GNU/Linux
The old weird double-target linux_ops mechanism in linux-nat.c, is
gone, replaced by adding a few virtual methods to linux-nat.h's
target_ops, called low_XXX, that the concrete linux-nat
implementations override. Sort of like gdbserver's
linux_target_ops, but simpler, for requiring only one
target_ops-like hierarchy, which spares implementing the same method
twice when we need to forward the method to a low implementation.
The low target simply reimplements the target_ops method directly in
that case.
There are a few remaining linux-nat.c hooks that would be better
converted to low_ methods like above too. E.g.:
linux_nat_set_new_thread (t, x86_linux_new_thread);
linux_nat_set_new_fork (t, x86_linux_new_fork);
linux_nat_set_forget_process
That'll be done in a follow up patch.
- We can no longer use functions like x86_use_watchpoints to install
custom methods on an arbitrary base target.
The patch replaces instances of such a pattern with template mixins.
For example memory_breakpoint_target defined in target.h, or
x86_nat_target in x86-nat.h.
- linux_trad_target, MIPS and Alpha GNU/Linux
The code in the new linux-nat-trad.h/c files which was split off of
inf-ptrace.h/c recently, is converted to a C++ base class, and used
by the MIPS and Alpha GNU/Linux ports.
- BSD targets
The
$architecture x NetBSD/OpenBSD/FreeBSD
support matrix complicates things a bit. There's common BSD target
code, and there's common architecture-specific code shared between
the different BSDs. Currently, all that is stiched together to form
a final target, via the i386bsd_target, x86bsd_target,
fbsd_nat_add_target functions etc.
This introduces new fbsd_nat_target, obsd_nat_target and
nbsd_nat_target classes that serve as base/prototype target for the
corresponding BSD variant.
And introduces generic i386/AMD64 BSD targets, to be used as
template mixin to build a final target. Similarly, a generic SPARC
target is added, used by both BSD and Linux ports.
- bsd_kvm_add_target, BSD libkvm target
I considered making bsd_kvm_supply_pcb a virtual method, and then
have each port inherit bsd_kvm_target and override that method, but
that was resulting in lots of unjustified churn, so I left the
function pointer mechanism alone.
gdb/ChangeLog:
2018-05-02 Pedro Alves <palves@redhat.com>
John Baldwin <jhb@freebsd.org>
* target.h (enum strata) <debug_stratum>: New.
(struct target_ops) <all delegation methods>: Replace by C++
virtual methods, and drop "to_" prefix. All references updated
throughout.
<to_shortname, to_longname, to_doc, to_data,
to_have_steppable_watchpoint, to_have_continuable_watchpoint,
to_has_thread_control, to_attach_no_wait>: Delete, replaced by
virtual methods. All references updated throughout.
<can_attach, supports_terminal_ours, can_create_inferior,
get_thread_control_capabilities, attach_no_wait>: New
virtual methods.
<insert_breakpoint, remove_breakpoint>: Now
TARGET_DEFAULT_NORETURN methods.
<info_proc>: Now returns bool.
<to_magic>: Delete.
(OPS_MAGIC): Delete.
(current_target): Delete. All references replaced by references
to ...
(target_stack): ... this. New.
(target_shortname, target_longname): Adjust.
(target_can_run): Now a function declaration.
(default_child_has_all_memory, default_child_has_memory)
(default_child_has_stack, default_child_has_registers)
(default_child_has_execution): Remove target_ops parameter.
(complete_target_initialization): Delete.
(memory_breakpoint_target): New template class.
(test_target_ops): Refactor as a C++ class with virtual methods.
* make-target-delegates (NAME_PART): Tighten.
(POINTER_PART, CP_SYMBOL): New.
(SIMPLE_RETURN_PART): Reimplement.
(VEC_RETURN_PART): Expect less.
(RETURN_PART, VIRTUAL_PART): New.
(METHOD): Adjust to C++ virtual methods.
(scan_target_h): Remove reference to C99.
(dname): Output "target_ops::" prefix.
(write_function_header): Adjust to output a C++ class method.
(write_declaration): New.
(write_delegator): Adjust to output a C++ class method.
(tdname): Output "dummy_target::" prefix.
(write_tdefault, write_debugmethod): Adjust to output a C++ class
method.
(tdefault_names, debug_names): Delete.
(return_types, tdefaults, styles, argtypes_array): New.
(top level): All methods are delegators.
(print_class): New.
(top level): Print dummy_target and debug_target classes.
* target-delegates.c: Regenerate.
* target-debug.h (target_debug_print_enum_info_proc_what)
(target_debug_print_thread_control_capabilities)
(target_debug_print_thread_info_p): New.
* target.c (dummy_target): Delete.
(the_dummy_target, the_debug_target): New.
(target_stack): Now extern.
(set_targetdebug): Push/unpush debug target.
(default_child_has_all_memory, default_child_has_memory)
(default_child_has_stack, default_child_has_registers)
(default_child_has_execution): Remove target_ops parameter.
(complete_target_initialization): Delete.
(add_target_with_completer): No longer call
complete_target_initialization.
(target_supports_terminal_ours): Use regular delegation.
(update_current_target): Delete.
(push_target): No longer check magic number. Don't call
update_current_target.
(unpush_target): Don't call update_current_target.
(target_is_pushed): No longer check magic number.
(target_require_runnable): Skip for all stratums over
process_stratum.
(target_ops::info_proc): New.
(target_info_proc): Use find_target_at and
find_default_run_target.
(target_supports_disable_randomization): Use regular delegation.
(target_get_osdata): Use find_target_at.
(target_ops::open, target_ops::close, target_ops::can_attach)
(target_ops::attach, target_ops::can_create_inferior)
(target_ops::create_inferior, target_ops::can_run)
(target_can_run): New.
(default_fileio_target): Use regular delegation.
(target_ops::fileio_open, target_ops::fileio_pwrite)
(target_ops::fileio_pread, target_ops::fileio_fstat)
(target_ops::fileio_close, target_ops::fileio_unlink)
(target_ops::fileio_readlink): New.
(target_fileio_open_1, target_fileio_unlink)
(target_fileio_readlink): Always call the target method. Handle
FILEIO_ENOSYS.
(return_zero, return_zero_has_execution): Delete.
(init_dummy_target): Delete.
(dummy_target::dummy_target, dummy_target::shortname)
(dummy_target::longname, dummy_target::doc)
(debug_target::debug_target, debug_target::shortname)
(debug_target::longname, debug_target::doc): New.
(target_supports_delete_record): Use regular delegation.
(setup_target_debug): Delete.
(maintenance_print_target_stack): Skip debug_stratum.
(initialize_targets): Instantiate the_dummy_target and
the_debug_target.
* auxv.c (target_auxv_parse): Remove 'ops' parameter. Adjust to
use target_stack.
(target_auxv_search, fprint_target_auxv): Adjust.
(info_auxv_command): Adjust to use target_stack.
* auxv.h (target_auxv_parse): Remove 'ops' parameter.
* exceptions.c (print_flush): Handle a NULL target_stack.
* regcache.c (target_ops_no_register): Refactor as class with
virtual methods.
* exec.c (exec_target): New class.
(exec_ops): Now an exec_target.
(exec_open, exec_close_1, exec_get_section_table)
(exec_xfer_partial, exec_files_info, exec_has_memory)
(exec_make_note_section): Refactor as exec_target methods.
(exec_file_clear, ignore, exec_remove_breakpoint, init_exec_ops):
Delete.
(exec_target::find_memory_regions): New.
(_initialize_exec): Don't call init_exec_ops.
* gdbcore.h (exec_file_clear): Delete.
* corefile.c (core_target): Delete.
(core_file_command): Adjust.
* corelow.c (core_target): New class.
(the_core_target): New.
(core_close): Remove target_ops parameter.
(core_close_cleanup): Adjust.
(core_target::close): New.
(core_open, core_detach, get_core_registers, core_files_info)
(core_xfer_partial, core_thread_alive, core_read_description)
(core_pid_to_str, core_thread_name, core_has_memory)
(core_has_stack, core_has_registers, core_info_proc): Rework as
core_target methods.
(ignore, core_remove_breakpoint, init_core_ops): Delete.
(_initialize_corelow): Initialize the_core_target.
* gdbcore.h (core_target): Delete.
(the_core_target): New.
* ctf.c: (ctf_target): New class.
(ctf_ops): Now a ctf_target.
(ctf_open, ctf_close, ctf_files_info, ctf_fetch_registers)
(ctf_xfer_partial, ctf_get_trace_state_variable_value)
(ctf_trace_find, ctf_traceframe_info): Refactor as ctf_target
methods.
(init_ctf_ops): Delete.
(_initialize_ctf): Don't call it.
* tracefile-tfile.c (tfile_target): New class.
(tfile_ops): Now a tfile_target.
(tfile_open, tfile_close, tfile_files_info)
(tfile_get_tracepoint_status, tfile_trace_find)
(tfile_fetch_registers, tfile_xfer_partial)
(tfile_get_trace_state_variable_value, tfile_traceframe_info):
Refactor as tfile_target methods.
(tfile_xfer_partial_features): Remove target_ops parameter.
(init_tfile_ops): Delete.
(_initialize_tracefile_tfile): Don't call it.
* tracefile.c (tracefile_has_all_memory, tracefile_has_memory)
(tracefile_has_stack, tracefile_has_registers)
(tracefile_thread_alive, tracefile_get_trace_status): Refactor as
tracefile_target methods.
(init_tracefile_ops): Delete.
(tracefile_target::tracefile_target): New.
* tracefile.h: Include "target.h".
(tracefile_target): New class.
(init_tracefile_ops): Delete.
* spu-multiarch.c (spu_multiarch_target): New class.
(spu_ops): Now a spu_multiarch_target.
(spu_thread_architecture, spu_region_ok_for_hw_watchpoint)
(spu_fetch_registers, spu_store_registers, spu_xfer_partial)
(spu_search_memory, spu_mourn_inferior): Refactor as
spu_multiarch_target methods.
(init_spu_ops): Delete.
(_initialize_spu_multiarch): Remove references to init_spu_ops,
complete_target_initialization.
* ravenscar-thread.c (ravenscar_thread_target): New class.
(ravenscar_ops): Now a ravenscar_thread_target.
(ravenscar_resume, ravenscar_wait, ravenscar_update_thread_list)
(ravenscar_thread_alive, ravenscar_pid_to_str)
(ravenscar_fetch_registers, ravenscar_store_registers)
(ravenscar_prepare_to_store, ravenscar_stopped_by_sw_breakpoint)
(ravenscar_stopped_by_hw_breakpoint)
(ravenscar_stopped_by_watchpoint, ravenscar_stopped_data_address)
(ravenscar_mourn_inferior, ravenscar_core_of_thread)
(ravenscar_get_ada_task_ptid): Refactor as ravenscar_thread_target
methods.
(init_ravenscar_thread_ops): Delete.
(_initialize_ravenscar): Remove references to
init_ravenscar_thread_ops and complete_target_initialization.
* bsd-uthread.c (bsd_uthread_ops_hack): Delete.
(bsd_uthread_target): New class.
(bsd_uthread_ops): Now a bsd_uthread_target.
(bsd_uthread_activate): Adjust to refer to bsd_uthread_ops.
(bsd_uthread_close, bsd_uthread_mourn_inferior)
(bsd_uthread_fetch_registers, bsd_uthread_store_registers)
(bsd_uthread_wait, bsd_uthread_resume, bsd_uthread_thread_alive)
(bsd_uthread_update_thread_list, bsd_uthread_extra_thread_info)
(bsd_uthread_pid_to_str): Refactor as bsd_uthread_target methods.
(bsd_uthread_target): Delete function.
(_initialize_bsd_uthread): Remove reference to
complete_target_initialization.
* bfd-target.c (target_bfd_data): Delete. Fields folded into ...
(target_bfd): ... this new class.
(target_bfd_xfer_partial, target_bfd_get_section_table)
(target_bfd_close): Refactor as target_bfd methods.
(target_bfd::~target_bfd): New.
(target_bfd_reopen): Adjust.
(target_bfd::close): New.
* record-btrace.c (record_btrace_target): New class.
(record_btrace_ops): Now a record_btrace_target.
(record_btrace_open, record_btrace_stop_recording)
(record_btrace_disconnect, record_btrace_close)
(record_btrace_async, record_btrace_info)
(record_btrace_insn_history, record_btrace_insn_history_range)
(record_btrace_insn_history_from, record_btrace_call_history)
(record_btrace_call_history_range)
(record_btrace_call_history_from, record_btrace_record_method)
(record_btrace_is_replaying, record_btrace_will_replay)
(record_btrace_xfer_partial, record_btrace_insert_breakpoint)
(record_btrace_remove_breakpoint, record_btrace_fetch_registers)
(record_btrace_store_registers, record_btrace_prepare_to_store)
(record_btrace_to_get_unwinder)
(record_btrace_to_get_tailcall_unwinder, record_btrace_resume)
(record_btrace_commit_resume, record_btrace_wait)
(record_btrace_stop, record_btrace_can_execute_reverse)
(record_btrace_stopped_by_sw_breakpoint)
(record_btrace_supports_stopped_by_sw_breakpoint)
(record_btrace_stopped_by_hw_breakpoint)
(record_btrace_supports_stopped_by_hw_breakpoint)
(record_btrace_update_thread_list, record_btrace_thread_alive)
(record_btrace_goto_begin, record_btrace_goto_end)
(record_btrace_goto, record_btrace_stop_replaying_all)
(record_btrace_execution_direction)
(record_btrace_prepare_to_generate_core)
(record_btrace_done_generating_core): Refactor as
record_btrace_target methods.
(init_record_btrace_ops): Delete.
(_initialize_record_btrace): Remove reference to
init_record_btrace_ops.
* record-full.c (RECORD_FULL_IS_REPLAY): Adjust to always refer to
the execution_direction global.
(record_full_base_target, record_full_target)
(record_full_core_target): New classes.
(record_full_ops): Now a record_full_target.
(record_full_core_ops): Now a record_full_core_target.
(record_full_target::detach, record_full_target::disconnect)
(record_full_core_target::disconnect)
(record_full_target::mourn_inferior, record_full_target::kill):
New.
(record_full_open, record_full_close, record_full_async): Refactor
as methods of the record_full_base_target class.
(record_full_resume, record_full_commit_resume): Refactor
as methods of the record_full_target class.
(record_full_wait, record_full_stopped_by_watchpoint)
(record_full_stopped_data_address)
(record_full_stopped_by_sw_breakpoint)
(record_full_supports_stopped_by_sw_breakpoint)
(record_full_stopped_by_hw_breakpoint)
(record_full_supports_stopped_by_hw_breakpoint): Refactor as
methods of the record_full_base_target class.
(record_full_store_registers, record_full_xfer_partial)
(record_full_insert_breakpoint, record_full_remove_breakpoint):
Refactor as methods of the record_full_target class.
(record_full_can_execute_reverse, record_full_get_bookmark)
(record_full_goto_bookmark, record_full_execution_direction)
(record_full_record_method, record_full_info, record_full_delete)
(record_full_is_replaying, record_full_will_replay)
(record_full_goto_begin, record_full_goto_end, record_full_goto)
(record_full_stop_replaying): Refactor as methods of the
record_full_base_target class.
(record_full_core_resume, record_full_core_kill)
(record_full_core_fetch_registers)
(record_full_core_prepare_to_store)
(record_full_core_store_registers, record_full_core_xfer_partial)
(record_full_core_insert_breakpoint)
(record_full_core_remove_breakpoint)
(record_full_core_has_execution): Refactor
as methods of the record_full_core_target class.
(record_full_base_target::supports_delete_record): New.
(init_record_full_ops): Delete.
(init_record_full_core_ops): Delete.
(record_full_save): Refactor as method of the
record_full_base_target class.
(_initialize_record_full): Remove references to
init_record_full_ops and init_record_full_core_ops.
* remote.c (remote_target, extended_remote_target): New classes.
(remote_ops): Now a remote_target.
(extended_remote_ops): Now an extended_remote_target.
(remote_insert_fork_catchpoint, remote_remove_fork_catchpoint)
(remote_insert_vfork_catchpoint, remote_remove_vfork_catchpoint)
(remote_insert_exec_catchpoint, remote_remove_exec_catchpoint)
(remote_pass_signals, remote_set_syscall_catchpoint)
(remote_program_signals, )
(remote_thread_always_alive): Remove target_ops parameter.
(remote_thread_alive, remote_thread_name)
(remote_update_thread_list, remote_threads_extra_info)
(remote_static_tracepoint_marker_at)
(remote_static_tracepoint_markers_by_strid)
(remote_get_ada_task_ptid, remote_close, remote_start_remote)
(remote_open): Refactor as methods of remote_target.
(extended_remote_open, extended_remote_detach)
(extended_remote_attach, extended_remote_post_attach):
(extended_remote_supports_disable_randomization)
(extended_remote_create_inferior): : Refactor as method of
extended_remote_target.
(remote_set_permissions, remote_open_1, remote_detach)
(remote_follow_fork, remote_follow_exec, remote_disconnect)
(remote_resume, remote_commit_resume, remote_stop)
(remote_interrupt, remote_pass_ctrlc, remote_terminal_inferior)
(remote_terminal_ours, remote_wait, remote_fetch_registers)
(remote_prepare_to_store, remote_store_registers)
(remote_flash_erase, remote_flash_done, remote_files_info)
(remote_kill, remote_mourn, remote_insert_breakpoint)
(remote_remove_breakpoint, remote_insert_watchpoint)
(remote_watchpoint_addr_within_range)
(remote_remove_watchpoint, remote_region_ok_for_hw_watchpoint)
(remote_check_watch_resources, remote_stopped_by_sw_breakpoint)
(remote_supports_stopped_by_sw_breakpoint)
(remote_stopped_by_hw_breakpoint)
(remote_supports_stopped_by_hw_breakpoint)
(remote_stopped_by_watchpoint, remote_stopped_data_address)
(remote_insert_hw_breakpoint, remote_remove_hw_breakpoint)
(remote_verify_memory): Refactor as methods of remote_target.
(remote_write_qxfer, remote_read_qxfer): Remove target_ops
parameter.
(remote_xfer_partial, remote_get_memory_xfer_limit)
(remote_search_memory, remote_rcmd, remote_memory_map)
(remote_pid_to_str, remote_get_thread_local_address)
(remote_get_tib_address, remote_read_description): Refactor as
methods of remote_target.
(remote_target::fileio_open, remote_target::fileio_pwrite)
(remote_target::fileio_pread, remote_target::fileio_close): New.
(remote_hostio_readlink, remote_hostio_fstat)
(remote_filesystem_is_local, remote_can_execute_reverse)
(remote_supports_non_stop, remote_supports_disable_randomization)
(remote_supports_multi_process, remote_supports_cond_breakpoints)
(remote_supports_enable_disable_tracepoint)
(remote_supports_string_tracing)
(remote_can_run_breakpoint_commands, remote_trace_init)
(remote_download_tracepoint, remote_can_download_tracepoint)
(remote_download_trace_state_variable, remote_enable_tracepoint)
(remote_disable_tracepoint, remote_trace_set_readonly_regions)
(remote_trace_start, remote_get_trace_status)
(remote_get_tracepoint_status, remote_trace_stop)
(remote_trace_find, remote_get_trace_state_variable_value)
(remote_save_trace_data, remote_get_raw_trace_data)
(remote_set_disconnected_tracing, remote_core_of_thread)
(remote_set_circular_trace_buffer, remote_traceframe_info)
(remote_get_min_fast_tracepoint_insn_len)
(remote_set_trace_buffer_size, remote_set_trace_notes)
(remote_use_agent, remote_can_use_agent, remote_enable_btrace)
(remote_disable_btrace, remote_teardown_btrace)
(remote_read_btrace, remote_btrace_conf)
(remote_augmented_libraries_svr4_read, remote_load)
(remote_pid_to_exec_file, remote_can_do_single_step)
(remote_execution_direction, remote_thread_handle_to_thread_info):
Refactor as methods of remote_target.
(init_remote_ops, init_extended_remote_ops): Delete.
(remote_can_async_p, remote_is_async_p, remote_async)
(remote_thread_events, remote_upload_tracepoints)
(remote_upload_trace_state_variables): Refactor as methods of
remote_target.
(_initialize_remote): Remove references to init_remote_ops and
init_extended_remote_ops.
* remote-sim.c (gdbsim_target): New class.
(gdbsim_fetch_register, gdbsim_store_register, gdbsim_kill)
(gdbsim_load, gdbsim_create_inferior, gdbsim_open, gdbsim_close)
(gdbsim_detach, gdbsim_resume, gdbsim_interrupt)
(gdbsim_wait, gdbsim_prepare_to_store, gdbsim_xfer_partial)
(gdbsim_files_info, gdbsim_mourn_inferior, gdbsim_thread_alive)
(gdbsim_pid_to_str, gdbsim_has_all_memory, gdbsim_has_memory):
Refactor as methods of gdbsim_target.
(gdbsim_ops): Now a gdbsim_target.
(init_gdbsim_ops): Delete.
(gdbsim_cntrl_c): Adjust.
(_initialize_remote_sim): Remove reference to init_gdbsim_ops.
* amd64-linux-nat.c (amd64_linux_nat_target): New class.
(the_amd64_linux_nat_target): New.
(amd64_linux_fetch_inferior_registers)
(amd64_linux_store_inferior_registers): Refactor as methods of
amd64_linux_nat_target.
(_initialize_amd64_linux_nat): Adjust. Set linux_target.
* i386-linux-nat.c: Don't include "linux-nat.h".
(i386_linux_nat_target): New class.
(the_i386_linux_nat_target): New.
(i386_linux_fetch_inferior_registers)
(i386_linux_store_inferior_registers, i386_linux_resume): Refactor
as methods of i386_linux_nat_target.
(_initialize_i386_linux_nat): Adjust. Set linux_target.
* inf-child.c (inf_child_ops): Delete.
(inf_child_fetch_inferior_registers)
(inf_child_store_inferior_registers): Delete.
(inf_child_post_attach, inf_child_prepare_to_store): Refactor as
methods of inf_child_target.
(inf_child_target::supports_terminal_ours)
(inf_child_target::terminal_init)
(inf_child_target::terminal_inferior)
(inf_child_target::terminal_ours_for_output)
(inf_child_target::terminal_ours, inf_child_target::interrupt)
(inf_child_target::pass_ctrlc, inf_child_target::terminal_info):
New.
(inf_child_open, inf_child_disconnect, inf_child_close)
(inf_child_mourn_inferior, inf_child_maybe_unpush_target)
(inf_child_post_startup_inferior, inf_child_can_run)
(inf_child_pid_to_exec_file): Refactor as methods of
inf_child_target.
(inf_child_follow_fork): Delete.
(inf_child_target::can_create_inferior)
(inf_child_target::can_attach): New.
(inf_child_target::has_all_memory, inf_child_target::has_memory)
(inf_child_target::has_stack, inf_child_target::has_registers)
(inf_child_target::has_execution): New.
(inf_child_fileio_open, inf_child_fileio_pwrite)
(inf_child_fileio_pread, inf_child_fileio_fstat)
(inf_child_fileio_close, inf_child_fileio_unlink)
(inf_child_fileio_readlink, inf_child_use_agent)
(inf_child_can_use_agent): Refactor as methods of
inf_child_target.
(return_zero, inf_child_target): Delete.
(inf_child_target::inf_child_target): New.
* inf-child.h: Include "target.h".
(inf_child_target): Delete function prototype.
(inf_child_target): New class.
(inf_child_open_target, inf_child_mourn_inferior)
(inf_child_maybe_unpush_target): Delete.
* inf-ptrace.c (inf_ptrace_target::~inf_ptrace_target): New.
(inf_ptrace_follow_fork, inf_ptrace_insert_fork_catchpoint)
(inf_ptrace_remove_fork_catchpoint, inf_ptrace_create_inferior)
(inf_ptrace_post_startup_inferior, inf_ptrace_mourn_inferior)
(inf_ptrace_attach, inf_ptrace_post_attach, inf_ptrace_detach)
(inf_ptrace_detach_success, inf_ptrace_kill, inf_ptrace_resume)
(inf_ptrace_wait, inf_ptrace_xfer_partial)
(inf_ptrace_thread_alive, inf_ptrace_files_info)
(inf_ptrace_pid_to_str, inf_ptrace_auxv_parse): Refactor as
methods of inf_ptrace_target.
(inf_ptrace_target): Delete function.
* inf-ptrace.h: Include "inf-child.h".
(inf_ptrace_target): Delete function declaration.
(inf_ptrace_target): New class.
(inf_ptrace_trad_target, inf_ptrace_detach_success): Delete.
* linux-nat.c (linux_target): New.
(linux_ops, linux_ops_saved, super_xfer_partial): Delete.
(linux_nat_target::~linux_nat_target): New.
(linux_child_post_attach, linux_child_post_startup_inferior)
(linux_child_follow_fork, linux_child_insert_fork_catchpoint)
(linux_child_remove_fork_catchpoint)
(linux_child_insert_vfork_catchpoint)
(linux_child_remove_vfork_catchpoint)
(linux_child_insert_exec_catchpoint)
(linux_child_remove_exec_catchpoint)
(linux_child_set_syscall_catchpoint, linux_nat_pass_signals)
(linux_nat_create_inferior, linux_nat_attach, linux_nat_detach)
(linux_nat_resume, linux_nat_stopped_by_watchpoint)
(linux_nat_stopped_data_address)
(linux_nat_stopped_by_sw_breakpoint)
(linux_nat_supports_stopped_by_sw_breakpoint)
(linux_nat_stopped_by_hw_breakpoint)
(linux_nat_supports_stopped_by_hw_breakpoint, linux_nat_wait)
(linux_nat_kill, linux_nat_mourn_inferior)
(linux_nat_xfer_partial, linux_nat_thread_alive)
(linux_nat_update_thread_list, linux_nat_pid_to_str)
(linux_nat_thread_name, linux_child_pid_to_exec_file)
(linux_child_static_tracepoint_markers_by_strid)
(linux_nat_is_async_p, linux_nat_can_async_p)
(linux_nat_supports_non_stop, linux_nat_always_non_stop_p)
(linux_nat_supports_multi_process)
(linux_nat_supports_disable_randomization, linux_nat_async)
(linux_nat_stop, linux_nat_close, linux_nat_thread_address_space)
(linux_nat_core_of_thread, linux_nat_filesystem_is_local)
(linux_nat_fileio_open, linux_nat_fileio_readlink)
(linux_nat_fileio_unlink, linux_nat_thread_events): Refactor as
methods of linux_nat_target.
(linux_nat_wait_1, linux_xfer_siginfo, linux_proc_xfer_partial)
(linux_proc_xfer_spu, linux_nat_xfer_osdata): Remove target_ops
parameter.
(check_stopped_by_watchpoint): Adjust.
(linux_xfer_partial): Delete.
(linux_target_install_ops, linux_target, linux_nat_add_target):
Delete.
(linux_nat_target::linux_nat_target): New.
* linux-nat.h: Include "inf-ptrace.h".
(linux_nat_target): New.
(linux_target, linux_target_install_ops, linux_nat_add_target):
Delete function declarations.
(linux_target): Declare global.
* linux-thread-db.c (thread_db_target): New.
(thread_db_target::thread_db_target): New.
(thread_db_ops): Delete.
(the_thread_db_target): New.
(thread_db_detach, thread_db_wait, thread_db_mourn_inferior)
(thread_db_update_thread_list, thread_db_pid_to_str)
(thread_db_extra_thread_info)
(thread_db_thread_handle_to_thread_info)
(thread_db_get_thread_local_address, thread_db_get_ada_task_ptid)
(thread_db_resume): Refactor as methods of thread_db_target.
(init_thread_db_ops): Delete.
(_initialize_thread_db): Remove reference to init_thread_db_ops.
* x86-linux-nat.c: Don't include "linux-nat.h".
(super_post_startup_inferior): Delete.
(x86_linux_nat_target::~x86_linux_nat_target): New.
(x86_linux_child_post_startup_inferior)
(x86_linux_read_description, x86_linux_enable_btrace)
(x86_linux_disable_btrace, x86_linux_teardown_btrace)
(x86_linux_read_btrace, x86_linux_btrace_conf): Refactor as
methods of x86_linux_nat_target.
(x86_linux_create_target): Delete. Bits folded ...
(x86_linux_add_target): ... here. Now takes a linux_nat_target
pointer.
* x86-linux-nat.h: Include "linux-nat.h" and "x86-nat.h".
(x86_linux_nat_target): New class.
(x86_linux_create_target): Delete.
(x86_linux_add_target): Now takes a linux_nat_target pointer.
* x86-nat.c (x86_insert_watchpoint, x86_remove_watchpoint)
(x86_region_ok_for_watchpoint, x86_stopped_data_address)
(x86_stopped_by_watchpoint, x86_insert_hw_breakpoint)
(x86_remove_hw_breakpoint, x86_can_use_hw_breakpoint)
(x86_stopped_by_hw_breakpoint): Remove target_ops parameter and
make extern.
(x86_use_watchpoints): Delete.
* x86-nat.h: Include "breakpoint.h" and "target.h".
(x86_use_watchpoints): Delete.
(x86_can_use_hw_breakpoint, x86_region_ok_for_hw_watchpoint)
(x86_stopped_by_watchpoint, x86_stopped_data_address)
(x86_insert_watchpoint, x86_remove_watchpoint)
(x86_insert_hw_breakpoint, x86_remove_hw_breakpoint)
(x86_stopped_by_hw_breakpoint): New declarations.
(x86_nat_target): New template class.
* ppc-linux-nat.c (ppc_linux_nat_target): New class.
(the_ppc_linux_nat_target): New.
(ppc_linux_fetch_inferior_registers)
(ppc_linux_can_use_hw_breakpoint)
(ppc_linux_region_ok_for_hw_watchpoint)
(ppc_linux_ranged_break_num_registers)
(ppc_linux_insert_hw_breakpoint, ppc_linux_remove_hw_breakpoint)
(ppc_linux_insert_mask_watchpoint)
(ppc_linux_remove_mask_watchpoint)
(ppc_linux_can_accel_watchpoint_condition)
(ppc_linux_insert_watchpoint, ppc_linux_remove_watchpoint)
(ppc_linux_stopped_data_address, ppc_linux_stopped_by_watchpoint)
(ppc_linux_watchpoint_addr_within_range)
(ppc_linux_masked_watch_num_registers)
(ppc_linux_store_inferior_registers, ppc_linux_auxv_parse)
(ppc_linux_read_description): Refactor as methods of
ppc_linux_nat_target.
(_initialize_ppc_linux_nat): Adjust. Set linux_target.
* procfs.c (procfs_xfer_partial): Delete forward declaration.
(procfs_target): New class.
(the_procfs_target): New.
(procfs_target): Delete function.
(procfs_auxv_parse, procfs_attach, procfs_detach)
(procfs_fetch_registers, procfs_store_registers, procfs_wait)
(procfs_xfer_partial, procfs_resume, procfs_pass_signals)
(procfs_files_info, procfs_kill_inferior, procfs_mourn_inferior)
(procfs_create_inferior, procfs_update_thread_list)
(procfs_thread_alive, procfs_pid_to_str)
(procfs_can_use_hw_breakpoint, procfs_stopped_by_watchpoint)
(procfs_stopped_data_address, procfs_insert_watchpoint)
(procfs_remove_watchpoint, procfs_region_ok_for_hw_watchpoint)
(proc_find_memory_regions, procfs_info_proc)
(procfs_make_note_section): Refactor as methods of procfs_target.
(_initialize_procfs): Adjust.
* sol-thread.c (sol_thread_target): New class.
(sol_thread_ops): Now a sol_thread_target.
(sol_thread_detach, sol_thread_resume, sol_thread_wait)
(sol_thread_fetch_registers, sol_thread_store_registers)
(sol_thread_xfer_partial, sol_thread_mourn_inferior)
(sol_thread_alive, solaris_pid_to_str, sol_update_thread_list)
(sol_get_ada_task_ptid): Refactor as methods of sol_thread_target.
(init_sol_thread_ops): Delete.
(_initialize_sol_thread): Adjust. Remove references to
init_sol_thread_ops and complete_target_initialization.
* windows-nat.c (windows_nat_target): New class.
(windows_fetch_inferior_registers)
(windows_store_inferior_registers, windows_resume, windows_wait)
(windows_attach, windows_detach, windows_pid_to_exec_file)
(windows_files_info, windows_create_inferior)
(windows_mourn_inferior, windows_interrupt, windows_kill_inferior)
(windows_close, windows_pid_to_str, windows_xfer_partial)
(windows_get_tib_address, windows_get_ada_task_ptid)
(windows_thread_name, windows_thread_alive): Refactor as
windows_nat_target methods.
(do_initial_windows_stuff): Adjust.
(windows_target): Delete function.
(_initialize_windows_nat): Adjust.
* darwin-nat.c (darwin_resume, darwin_wait_to, darwin_interrupt)
(darwin_mourn_inferior, darwin_kill_inferior)
(darwin_create_inferior, darwin_attach, darwin_detach)
(darwin_pid_to_str, darwin_thread_alive, darwin_xfer_partial)
(darwin_pid_to_exec_file, darwin_get_ada_task_ptid)
(darwin_supports_multi_process): Refactor as darwin_nat_target
methods.
(darwin_resume_to, darwin_files_info): Delete.
(_initialize_darwin_inferior): Rename to ...
(_initialize_darwin_nat): ... this. Adjust to C++ification.
* darwin-nat.h: Include "inf-child.h".
(darwin_nat_target): New class.
(darwin_complete_target): Delete.
* i386-darwin-nat.c (i386_darwin_nat_target): New class.
(darwin_target): New.
(i386_darwin_fetch_inferior_registers)
(i386_darwin_store_inferior_registers): Refactor as methods of
darwin_nat_target.
(darwin_complete_target): Delete, with ...
(_initialize_i386_darwin_nat): ... bits factored out here.
* alpha-linux-nat.c (alpha_linux_nat_target): New class.
(the_alpha_linux_nat_target): New.
(alpha_linux_register_u_offset): Refactor as
alpha_linux_nat_target method.
(_initialize_alpha_linux_nat): Adjust.
* linux-nat-trad.c (inf_ptrace_register_u_offset): Delete.
(inf_ptrace_fetch_register, inf_ptrace_fetch_registers)
(inf_ptrace_store_register, inf_ptrace_store_registers): Refact as
methods of linux_nat_trad_target.
(linux_trad_target): Delete.
* linux-nat-trad.h (linux_trad_target): Delete function.
(linux_nat_trad_target): New class.
* mips-linux-nat.c (mips_linux_nat_target): New class.
(super_fetch_registers, super_store_registers, super_close):
Delete.
(the_mips_linux_nat_target): New.
(mips64_linux_regsets_fetch_registers)
(mips64_linux_regsets_store_registers)
(mips64_linux_fetch_registers, mips64_linux_store_registers)
(mips_linux_register_u_offset, mips_linux_read_description)
(mips_linux_can_use_hw_breakpoint)
(mips_linux_stopped_by_watchpoint)
(mips_linux_stopped_data_address)
(mips_linux_region_ok_for_hw_watchpoint)
(mips_linux_insert_watchpoint, mips_linux_remove_watchpoint)
(mips_linux_close): Refactor as methods of mips_linux_nat.
(_initialize_mips_linux_nat): Adjust to C++ification.
* aix-thread.c (aix_thread_target): New class.
(aix_thread_ops): Now an aix_thread_target.
(aix_thread_detach, aix_thread_resume, aix_thread_wait)
(aix_thread_fetch_registers, aix_thread_store_registers)
(aix_thread_xfer_partial, aix_thread_mourn_inferior)
(aix_thread_thread_alive, aix_thread_pid_to_str)
(aix_thread_extra_thread_info, aix_thread_get_ada_task_ptid):
Refactor as methods of aix_thread_target.
(init_aix_thread_ops): Delete.
(_initialize_aix_thread): Remove references to init_aix_thread_ops
and complete_target_initialization.
* rs6000-nat.c (rs6000_xfer_shared_libraries): Delete.
(rs6000_nat_target): New class.
(the_rs6000_nat_target): New.
(rs6000_fetch_inferior_registers, rs6000_store_inferior_registers)
(rs6000_xfer_partial, rs6000_wait, rs6000_create_inferior)
(rs6000_xfer_shared_libraries): Refactor as rs6000_nat_target methods.
(super_create_inferior): Delete.
(_initialize_rs6000_nat): Adjust to C++ification.
* arm-linux-nat.c (arm_linux_nat_target): New class.
(the_arm_linux_nat_target): New.
(arm_linux_fetch_inferior_registers)
(arm_linux_store_inferior_registers, arm_linux_read_description)
(arm_linux_can_use_hw_breakpoint, arm_linux_insert_hw_breakpoint)
(arm_linux_remove_hw_breakpoint)
(arm_linux_region_ok_for_hw_watchpoint)
(arm_linux_insert_watchpoint, arm_linux_remove_watchpoint)
(arm_linux_stopped_data_address, arm_linux_stopped_by_watchpoint)
(arm_linux_watchpoint_addr_within_range): Refactor as methods of
arm_linux_nat_target.
(_initialize_arm_linux_nat): Adjust to C++ification.
* aarch64-linux-nat.c (aarch64_linux_nat_target): New class.
(the_aarch64_linux_nat_target): New.
(aarch64_linux_fetch_inferior_registers)
(aarch64_linux_store_inferior_registers)
(aarch64_linux_child_post_startup_inferior)
(aarch64_linux_read_description)
(aarch64_linux_can_use_hw_breakpoint)
(aarch64_linux_insert_hw_breakpoint)
(aarch64_linux_remove_hw_breakpoint)
(aarch64_linux_insert_watchpoint, aarch64_linux_remove_watchpoint)
(aarch64_linux_region_ok_for_hw_watchpoint)
(aarch64_linux_stopped_data_address)
(aarch64_linux_stopped_by_watchpoint)
(aarch64_linux_watchpoint_addr_within_range)
(aarch64_linux_can_do_single_step): Refactor as methods of
aarch64_linux_nat_target.
(super_post_startup_inferior): Delete.
(_initialize_aarch64_linux_nat): Adjust to C++ification.
* hppa-linux-nat.c (hppa_linux_nat_target): New class.
(the_hppa_linux_nat_target): New.
(hppa_linux_fetch_inferior_registers)
(hppa_linux_store_inferior_registers): Refactor as methods of
hppa_linux_nat_target.
(_initialize_hppa_linux_nat): Adjust to C++ification.
* ia64-linux-nat.c (ia64_linux_nat_target): New class.
(the_ia64_linux_nat_target): New.
(ia64_linux_insert_watchpoint, ia64_linux_remove_watchpoint)
(ia64_linux_stopped_data_address)
(ia64_linux_stopped_by_watchpoint, ia64_linux_fetch_registers)
(ia64_linux_store_registers, ia64_linux_xfer_partial): Refactor as
ia64_linux_nat_target methods.
(super_xfer_partial): Delete.
(_initialize_ia64_linux_nat): Adjust to C++ification.
* m32r-linux-nat.c (m32r_linux_nat_target): New class.
(the_m32r_linux_nat_target): New.
(m32r_linux_fetch_inferior_registers)
(m32r_linux_store_inferior_registers): Refactor as
m32r_linux_nat_target methods.
(_initialize_m32r_linux_nat): Adjust to C++ification.
* m68k-linux-nat.c (m68k_linux_nat_target): New class.
(the_m68k_linux_nat_target): New.
(m68k_linux_fetch_inferior_registers)
(m68k_linux_store_inferior_registers): Refactor as
m68k_linux_nat_target methods.
(_initialize_m68k_linux_nat): Adjust to C++ification.
* s390-linux-nat.c (s390_linux_nat_target): New class.
(the_s390_linux_nat_target): New.
(s390_linux_fetch_inferior_registers)
(s390_linux_store_inferior_registers, s390_stopped_by_watchpoint)
(s390_insert_watchpoint, s390_remove_watchpoint)
(s390_can_use_hw_breakpoint, s390_insert_hw_breakpoint)
(s390_remove_hw_breakpoint, s390_region_ok_for_hw_watchpoint)
(s390_auxv_parse, s390_read_description): Refactor as methods of
s390_linux_nat_target.
(_initialize_s390_nat): Adjust to C++ification.
* sparc-linux-nat.c (sparc_linux_nat_target): New class.
(the_sparc_linux_nat_target): New.
(_initialize_sparc_linux_nat): Adjust to C++ification.
* sparc-nat.c (sparc_fetch_inferior_registers)
(sparc_store_inferior_registers): Remove target_ops parameter.
* sparc-nat.h (sparc_fetch_inferior_registers)
(sparc_store_inferior_registers): Remove target_ops parameter.
* sparc64-linux-nat.c (sparc64_linux_nat_target): New class.
(the_sparc64_linux_nat_target): New.
(_initialize_sparc64_linux_nat): Adjust to C++ification.
* spu-linux-nat.c (spu_linux_nat_target): New class.
(the_spu_linux_nat_target): New.
(spu_child_post_startup_inferior, spu_child_post_attach)
(spu_child_wait, spu_fetch_inferior_registers)
(spu_store_inferior_registers, spu_xfer_partial)
(spu_can_use_hw_breakpoint): Refactor as spu_linux_nat_target
methods.
(_initialize_spu_nat): Adjust to C++ification.
* tilegx-linux-nat.c (tilegx_linux_nat_target): New class.
(the_tilegx_linux_nat_target): New.
(fetch_inferior_registers, store_inferior_registers):
Refactor as methods.
(_initialize_tile_linux_nat): Adjust to C++ification.
* xtensa-linux-nat.c (xtensa_linux_nat_target): New class.
(the_xtensa_linux_nat_target): New.
(xtensa_linux_fetch_inferior_registers)
(xtensa_linux_store_inferior_registers): Refactor as
xtensa_linux_nat_target methods.
(_initialize_xtensa_linux_nat): Adjust to C++ification.
* fbsd-nat.c (USE_SIGTRAP_SIGINFO): Delete.
(fbsd_pid_to_exec_file, fbsd_find_memory_regions)
(fbsd_find_memory_regions, fbsd_info_proc, fbsd_xfer_partial)
(fbsd_thread_alive, fbsd_pid_to_str, fbsd_thread_name)
(fbsd_update_thread_list, fbsd_resume, fbsd_wait)
(fbsd_stopped_by_sw_breakpoint)
(fbsd_supports_stopped_by_sw_breakpoint, fbsd_follow_fork)
(fbsd_insert_fork_catchpoint, fbsd_remove_fork_catchpoint)
(fbsd_insert_vfork_catchpoint, fbsd_remove_vfork_catchpoint)
(fbsd_post_startup_inferior, fbsd_post_attach)
(fbsd_insert_exec_catchpoint, fbsd_remove_exec_catchpoint)
(fbsd_set_syscall_catchpoint)
(super_xfer_partial, super_resume, super_wait)
(fbsd_supports_stopped_by_hw_breakpoint): Delete.
(fbsd_handle_debug_trap): Remove target_ops parameter.
(fbsd_nat_add_target): Delete.
* fbsd-nat.h: Include "inf-ptrace.h".
(fbsd_nat_add_target): Delete.
(USE_SIGTRAP_SIGINFO): Define.
(fbsd_nat_target): New class.
* amd64-bsd-nat.c (amd64bsd_fetch_inferior_registers)
(amd64bsd_store_inferior_registers): Remove target_ops parameter.
(amd64bsd_target): Delete.
* amd64-bsd-nat.h: New file.
* amd64-fbsd-nat.c: Include "amd64-bsd-nat.h" instead of
"x86-bsd-nat.h".
(amd64_fbsd_nat_target): New class.
(the_amd64_fbsd_nat_target): New.
(amd64fbsd_read_description): Refactor as method of
amd64_fbsd_nat_target.
(amd64_fbsd_nat_target::supports_stopped_by_hw_breakpoint): New.
(_initialize_amd64fbsd_nat): Adjust to C++ification.
* amd64-nat.h (amd64bsd_target): Delete function declaration.
* i386-bsd-nat.c (i386bsd_fetch_inferior_registers)
(i386bsd_store_inferior_registers): Remove target_ops parameter.
(i386bsd_target): Delete.
* i386-bsd-nat.h (i386bsd_target): Delete function declaration.
(i386bsd_fetch_inferior_registers)
(i386bsd_store_inferior_registers): Declare.
(i386_bsd_nat_target): New class.
* i386-fbsd-nat.c (i386_fbsd_nat_target): New class.
(the_i386_fbsd_nat_target): New.
(i386fbsd_resume, i386fbsd_read_description): Refactor as
i386_fbsd_nat_target methods.
(i386_fbsd_nat_target::supports_stopped_by_hw_breakpoint): New.
(_initialize_i386fbsd_nat): Adjust to C++ification.
* x86-bsd-nat.c (super_mourn_inferior): Delete.
(x86bsd_mourn_inferior, x86bsd_target): Delete.
(_initialize_x86_bsd_nat): Adjust to C++ification.
* x86-bsd-nat.h: Include "x86-nat.h".
(x86bsd_target): Delete declaration.
(x86bsd_nat_target): New class.
* aarch64-fbsd-nat.c (aarch64_fbsd_nat_target): New class.
(the_aarch64_fbsd_nat_target): New.
(aarch64_fbsd_fetch_inferior_registers)
(aarch64_fbsd_store_inferior_registers): Refactor as methods of
aarch64_fbsd_nat_target.
(_initialize_aarch64_fbsd_nat): Adjust to C++ification.
* alpha-bsd-nat.c (alpha_bsd_nat_target): New class.
(the_alpha_bsd_nat_target): New.
(alphabsd_fetch_inferior_registers)
(alphabsd_store_inferior_registers): Refactor as
alpha_bsd_nat_target methods.
(_initialize_alphabsd_nat): Refactor as methods of
alpha_bsd_nat_target.
* amd64-nbsd-nat.c: Include "amd64-bsd-nat.h".
(the_amd64_nbsd_nat_target): New.
(_initialize_amd64nbsd_nat): Adjust to C++ification.
* amd64-obsd-nat.c: Include "amd64-bsd-nat.h".
(the_amd64_obsd_nat_target): New.
(_initialize_amd64obsd_nat): Adjust to C++ification.
* arm-fbsd-nat.c (arm_fbsd_nat_target): New.
(the_arm_fbsd_nat_target): New.
(arm_fbsd_fetch_inferior_registers)
(arm_fbsd_store_inferior_registers, arm_fbsd_read_description):
(_initialize_arm_fbsd_nat): Refactor as methods of
arm_fbsd_nat_target.
(_initialize_arm_fbsd_nat): Adjust to C++ification.
* arm-nbsd-nat.c (arm_netbsd_nat_target): New class.
(the_arm_netbsd_nat_target): New.
(armnbsd_fetch_registers, armnbsd_store_registers): Refactor as
arm_netbsd_nat_target.
(_initialize_arm_netbsd_nat): Adjust to C++ification.
* hppa-nbsd-nat.c (hppa_nbsd_nat_target): New class.
(the_hppa_nbsd_nat_target): New.
(hppanbsd_fetch_registers, hppanbsd_store_registers): Refactor as
hppa_nbsd_nat_target methods.
(_initialize_hppanbsd_nat): Adjust to C++ification.
* hppa-obsd-nat.c (hppa_obsd_nat_target): New class.
(the_hppa_obsd_nat_target): New.
(hppaobsd_fetch_registers, hppaobsd_store_registers): Refactor as
methods of hppa_obsd_nat_target.
(_initialize_hppaobsd_nat): Adjust to C++ification. Use
add_target.
* i386-nbsd-nat.c (the_i386_nbsd_nat_target): New.
(_initialize_i386nbsd_nat): Adjust to C++ification. Use
add_target.
* i386-obsd-nat.c (the_i386_obsd_nat_target): New.
(_initialize_i386obsd_nat): Use add_target.
* m68k-bsd-nat.c (m68k_bsd_nat_target): New class.
(the_m68k_bsd_nat_target): New.
(m68kbsd_fetch_inferior_registers)
(m68kbsd_store_inferior_registers): Refactor as methods of
m68k_bsd_nat_target.
(_initialize_m68kbsd_nat): Adjust to C++ification.
* mips-fbsd-nat.c (mips_fbsd_nat_target): New class.
(the_mips_fbsd_nat_target): New.
(mips_fbsd_fetch_inferior_registers)
(mips_fbsd_store_inferior_registers): Refactor as methods of
mips_fbsd_nat_target.
(_initialize_mips_fbsd_nat): Adjust to C++ification. Use
add_target.
* mips-nbsd-nat.c (mips_nbsd_nat_target): New class.
(the_mips_nbsd_nat_target): New.
(mipsnbsd_fetch_inferior_registers)
(mipsnbsd_store_inferior_registers): Refactor as methods of
mips_nbsd_nat_target.
(_initialize_mipsnbsd_nat): Adjust to C++ification.
* mips64-obsd-nat.c (mips64_obsd_nat_target): New class.
(the_mips64_obsd_nat_target): New.
(mips64obsd_fetch_inferior_registers)
(mips64obsd_store_inferior_registers): Refactor as methods of
mips64_obsd_nat_target.
(_initialize_mips64obsd_nat): Adjust to C++ification. Use
add_target.
* nbsd-nat.c (nbsd_pid_to_exec_file): Refactor as method of
nbsd_nat_target.
* nbsd-nat.h: Include "inf-ptrace.h".
(nbsd_nat_target): New class.
* obsd-nat.c (obsd_pid_to_str, obsd_update_thread_list)
(obsd_wait): Refactor as methods of obsd_nat_target.
(obsd_add_target): Delete.
* obsd-nat.h: Include "inf-ptrace.h".
(obsd_nat_target): New class.
* ppc-fbsd-nat.c (ppc_fbsd_nat_target): New class.
(the_ppc_fbsd_nat_target): New.
(ppcfbsd_fetch_inferior_registers)
(ppcfbsd_store_inferior_registers): Refactor as methods of
ppc_fbsd_nat_target.
(_initialize_ppcfbsd_nat): Adjust to C++ification. Use
add_target.
* ppc-nbsd-nat.c (ppc_nbsd_nat_target): New class.
(the_ppc_nbsd_nat_target): New.
(ppcnbsd_fetch_inferior_registers)
(ppcnbsd_store_inferior_registers): Refactor as methods of
ppc_nbsd_nat_target.
(_initialize_ppcnbsd_nat): Adjust to C++ification.
* ppc-obsd-nat.c (ppc_obsd_nat_target): New class.
(the_ppc_obsd_nat_target): New.
(ppcobsd_fetch_registers, ppcobsd_store_registers): Refactor as
methods of ppc_obsd_nat_target.
(_initialize_ppcobsd_nat): Adjust to C++ification. Use
add_target.
* sh-nbsd-nat.c (sh_nbsd_nat_target): New class.
(the_sh_nbsd_nat_target): New.
(shnbsd_fetch_inferior_registers)
(shnbsd_store_inferior_registers): Refactor as methods of
sh_nbsd_nat_target.
(_initialize_shnbsd_nat): Adjust to C++ification.
* sparc-nat.c (sparc_xfer_wcookie): Make extern.
(inf_ptrace_xfer_partial): Delete.
(sparc_xfer_partial, sparc_target): Delete.
* sparc-nat.h (sparc_fetch_inferior_registers)
(sparc_store_inferior_registers, sparc_xfer_wcookie): Declare.
(sparc_target): Delete function declaration.
(sparc_target): New template class.
* sparc-nbsd-nat.c (the_sparc_nbsd_nat_target): New.
(_initialize_sparcnbsd_nat): Adjust to C++ification.
* sparc64-fbsd-nat.c (the_sparc64_fbsd_nat_target): New.
(_initialize_sparc64fbsd_nat): Adjust to C++ification. Use
add_target.
* sparc64-nbsd-nat.c (the_sparc64_nbsd_nat_target): New.
(_initialize_sparc64nbsd_nat): Adjust to C++ification.
* sparc64-obsd-nat.c (the_sparc64_obsd_nat_target): New.
(_initialize_sparc64obsd_nat): Adjust to C++ification. Use
add_target.
* vax-bsd-nat.c (vax_bsd_nat_target): New class.
(the_vax_bsd_nat_target): New.
(vaxbsd_fetch_inferior_registers)
(vaxbsd_store_inferior_registers): Refactor as vax_bsd_nat_target
methods.
(_initialize_vaxbsd_nat): Adjust to C++ification.
* bsd-kvm.c (bsd_kvm_target): New class.
(bsd_kvm_ops): Now a bsd_kvm_target.
(bsd_kvm_open, bsd_kvm_close, bsd_kvm_xfer_partial)
(bsd_kvm_files_info, bsd_kvm_fetch_registers)
(bsd_kvm_thread_alive, bsd_kvm_pid_to_str): Refactor as methods of
bsd_kvm_target.
(bsd_kvm_return_one): Delete.
(bsd_kvm_add_target): Adjust to C++ification.
* nto-procfs.c (nto_procfs_target, nto_procfs_target_native)
(nto_procfs_target_procfs): New classes.
(procfs_open_1, procfs_thread_alive, procfs_update_thread_list)
(procfs_files_info, procfs_pid_to_exec_file, procfs_attach)
(procfs_post_attach, procfs_wait, procfs_fetch_registers)
(procfs_xfer_partial, procfs_detach, procfs_insert_breakpoint)
(procfs_remove_breakpoint, procfs_insert_hw_breakpoint)
(procfs_remove_hw_breakpoint, procfs_resume)
(procfs_mourn_inferior, procfs_create_inferior, procfs_interrupt)
(procfs_kill_inferior, procfs_store_registers)
(procfs_pass_signals, procfs_pid_to_str, procfs_can_run): Refactor
as methods of nto_procfs_target.
(nto_procfs_ops): Now an nto_procfs_target_procfs.
(nto_native_ops): Delete.
(procfs_open, procfs_native_open): Delete.
(nto_native_ops): Now an nto_procfs_target_native.
(init_procfs_targets): Adjust to C++ification.
(procfs_can_use_hw_breakpoint, procfs_remove_hw_watchpoint)
(procfs_insert_hw_watchpoint, procfs_stopped_by_watchpoint):
Refactor as methods of nto_procfs_target.
* go32-nat.c (go32_nat_target): New class.
(the_go32_nat_target): New.
(go32_attach, go32_resume, go32_wait, go32_fetch_registers)
(go32_store_registers, go32_xfer_partial, go32_files_info)
(go32_kill_inferior, go32_create_inferior, go32_mourn_inferior)
(go32_terminal_init, go32_terminal_info, go32_terminal_inferior)
(go32_terminal_ours, go32_pass_ctrlc, go32_thread_alive)
(go32_pid_to_str): Refactor as methods of go32_nat_target.
(go32_target): Delete.
(_initialize_go32_nat): Adjust to C++ification.
* gnu-nat.c (gnu_wait, gnu_resume, gnu_kill_inferior)
(gnu_mourn_inferior, gnu_create_inferior, gnu_attach, gnu_detach)
(gnu_stop, gnu_thread_alive, gnu_xfer_partial)
(gnu_find_memory_regions, gnu_pid_to_str): Refactor as methods of
gnu_nat_target.
(gnu_target): Delete.
* gnu-nat.h (gnu_target): Delete.
(gnu_nat_target): New class.
* i386-gnu-nat.c (gnu_base_target): New.
(i386_gnu_nat_target): New class.
(the_i386_gnu_nat_target): New.
(_initialize_i386gnu_nat): Adjust to C++ification.
gdb/testsuite/ChangeLog:
2018-05-02 Pedro Alves <palves@redhat.com>
* gdb.base/breakpoint-in-ro-region.exp: Adjust to to_resume and
to_log_command renames.
* gdb.base/sss-bp-on-user-bp-2.exp: Likewise.
For gdb_bfd_ref_ptr, gdb already had a convenience function like the
new gdb_ref_ptr::new_reference -- called new_bfd_ref. This patch
removes it in favor of the new common function.
While doing this I also noticed that the comment for gdb_bfd_open was
incorrect (in a way related to reference counting), so this patch
updates the comment as well.
ChangeLog
2018-04-30 Tom Tromey <tom@tromey.com>
* symfile-mem.c (symbol_file_add_from_memory): Use new_reference.
* gdb_bfd.h (new_bfd_ref): Remove.
(gdb_bfd_open): Update comment.
* gdb_bfd.c (gdb_bfd_open, gdb_bfd_fopen, gdb_bfd_openr)
(gdb_bfd_openw, gdb_bfd_openr_iovec, gdb_bfd_record_inclusion)
(gdb_bfd_fdopenr): Use new_reference.
* exec.c (exec_file_attach): Use new_reference.
This converts observers from using a special source-generating script
to be plain C++. This version of the patch takes advantage of C++11
by using std::function and variadic templates; incorporates Pedro's
patches; and renames the header file to "observable.h" (this change
eliminates the need for a clean rebuild).
Note that Pedro's patches used a template lambda in tui-hooks.c, but
this failed to compile on some buildbot instances (presumably due to
differing C++ versions); I replaced this with an ordinary template
function.
Regression tested on the buildbot.
gdb/ChangeLog
2018-03-19 Pedro Alves <palves@redhat.com>
Tom Tromey <tom@tromey.com>
* unittests/observable-selftests.c: New file.
* common/observable.h: New file.
* observable.h: New file.
* ada-lang.c, ada-tasks.c, agent.c, aix-thread.c, annotate.c,
arm-tdep.c, auto-load.c, auxv.c, break-catch-syscall.c,
breakpoint.c, bsd-uthread.c, cli/cli-interp.c, cli/cli-setshow.c,
corefile.c, dummy-frame.c, event-loop.c, event-top.c, exec.c,
extension.c, frame.c, gdbarch.c, guile/scm-breakpoint.c,
infcall.c, infcmd.c, inferior.c, inflow.c, infrun.c, jit.c,
linux-tdep.c, linux-thread-db.c, m68klinux-tdep.c,
mi/mi-cmd-break.c, mi/mi-interp.c, mi/mi-main.c, objfiles.c,
ppc-linux-nat.c, ppc-linux-tdep.c, printcmd.c, procfs.c,
python/py-breakpoint.c, python/py-finishbreakpoint.c,
python/py-inferior.c, python/py-unwind.c, ravenscar-thread.c,
record-btrace.c, record-full.c, record.c, regcache.c, remote.c,
riscv-tdep.c, sol-thread.c, solib-aix.c, solib-spu.c, solib.c,
spu-multiarch.c, spu-tdep.c, stack.c, symfile-mem.c, symfile.c,
symtab.c, thread.c, top.c, tracepoint.c, tui/tui-hooks.c,
tui/tui-interp.c, valops.c: Update all users.
* tui/tui-hooks.c (tui_bp_created_observer)
(tui_bp_deleted_observer, tui_bp_modified_observer)
(tui_inferior_exit_observer, tui_before_prompt_observer)
(tui_normal_stop_observer, tui_register_changed_observer):
Remove.
(tui_observers_token): New global.
(attach_or_detach, tui_attach_detach_observers): New functions.
(tui_install_hooks, tui_remove_hooks): Use
tui_attach_detach_observers.
* record-btrace.c (record_btrace_thread_observer): Remove.
(record_btrace_thread_observer_token): New global.
* observer.sh: Remove.
* observer.c: Rename to observable.c.
* observable.c (namespace gdb_observers): Define new objects.
(observer_debug): Move into gdb_observers namespace.
(struct observer, struct observer_list, xalloc_observer_list_node)
(xfree_observer_list_node, generic_observer_attach)
(generic_observer_detach, generic_observer_notify): Remove.
(_initialize_observer): Update.
Don't include observer.inc.
* Makefile.in (generated_files): Remove observer.h, observer.inc.
(clean mostlyclean): Likewise.
(observer.h, observer.inc): Remove targets.
(SUBDIR_UNITTESTS_SRCS): Add observable-selftests.c.
(COMMON_SFILES): Use observable.c, not observer.c.
* .gitignore: Remove observer.h.
gdb/doc/ChangeLog
2018-03-19 Tom Tromey <tom@tromey.com>
* observer.texi: Remove.
gdb/testsuite/ChangeLog
2018-03-19 Tom Tromey <tom@tromey.com>
* gdb.gdb/observer.exp: Remove.
This commit moves the path manipulation routines found on utils.c to a
new common/pathstuff.c, and updates the Makefile.in's accordingly.
The routines moved are "gdb_realpath", "gdb_realpath_keepfile" and
"gdb_abspath".
This will be needed because gdbserver will have to call "gdb_abspath"
on my next patch, which implements a way to expand the path of the
inferior provided by the user in order to allow specifying just the
binary name when starting gdbserver, like:
$ gdbserver :1234 a.out
With the recent addition of the startup-with-shell feature on
gdbserver, this scenario doesn't work anymore if the user doesn't have
the current directory listed in the PATH variable.
I had to do a minor adjustment on "gdb_abspath" because we don't have
access to "tilde_expand" on gdbserver, so now the function is using
"gdb_tilde_expand" instead. Otherwise, the code is the same.
Regression tested on the BuildBot, without regressions.
gdb/ChangeLog:
2018-02-28 Sergio Durigan Junior <sergiodj@redhat.com>
* Makefile.in (COMMON_SFILES): Add "common/pathstuff.c".
(HFILES_NO_SRCDIR): Add "common/pathstuff.h".
* auto-load.c: Include "common/pathstuff.h".
* common/common-def.h (current_directory): Move here.
* common/gdb_tilde_expand.c (gdb_tilde_expand_up): New
function.
* common/gdb_tilde_expand.h (gdb_tilde_expand_up): New
prototype.
* common/pathstuff.c: New file.
* common/pathstuff.h: New file.
* compile/compile.c: Include "common/pathstuff.h".
* defs.h (current_directory): Move to "common/common-defs.h".
* dwarf2read.c: Include "common/pathstuff.h".
* exec.c: Likewise.
* guile/scm-safe-call.c: Likewise.
* linux-thread-db.c: Likewise.
* main.c: Likewise.
* nto-tdep.c: Likewise.
* objfiles.c: Likewise.
* source.c: Likewise.
* symtab.c: Likewise.
* utils.c: Include "common/pathstuff.h".
(gdb_realpath): Move to "common/pathstuff.c".
(gdb_realpath_keepfile): Likewise.
(gdb_abspath): Likewise.
* utils.h (gdb_realpath): Move to "common/pathstuff.h".
(gdb_realpath_keepfile): Likewise.
(gdb_abspath): Likewise.
gdb/gdbserver/ChangeLog:
2018-02-28 Sergio Durigan Junior <sergiodj@redhat.com>
* Makefile.in (SFILES): Add "$(srcdir)/common/pathstuff.c".
(OBJS): Add "pathstuff.o".
* server.c (current_directory): New global variable.
(captured_main): Initialize "current_directory".
This changes openp, source_full_path_of, and find_and_open_source to
take a unique_xmalloc_ptr, rather than a char*, as an outgoing
argument type. This simplifies the API, ownership-wise, and allows
for the removal of some cleanups.
gdb/ChangeLog
2018-02-14 Tom Tromey <tom@tromey.com>
* symfile.c (symfile_bfd_open): Update.
* source.h (openp, source_full_path_of, find_and_open_source):
Change argument type to unique_xmalloc_ptr.
* source.c (openp): Take a unique_xmalloc_ptr.
(source_full_path_of, find_and_open_source): Likewise.
(open_source_file, symtab_to_fullname): Update.
* solist.h (struct target_so_ops) <find_and_open_solib>: Take a
unique_xmalloc_ptr.
* solib.c (solib_find_1): Use unique_xmalloc_ptr.
(exec_file_find): Update.
* psymtab.c (psymtab_to_fullname): Update.
* nto-tdep.h (nto_find_and_open_solib): Update.
* nto-tdep.c (nto_find_and_open_solib): Change temp_path to a
unique_xmalloc_ptr.
* exec.c (exec_file_attach): Update.
* dwarf2read.c (try_open_dwop_file): Use unique_xmalloc_ptr.
* cli/cli-cmds.c (find_and_open_script): Use unique_xmalloc_ptr.
I noticed a few declarations in defs.h that really could be put into
source.h. I think it's generally preferable to something out of
defs.h unless it is needed by most of the files in gdb.
gdb/ChangeLog
2018-02-14 Tom Tromey <tom@tromey.com>
* solib.c: Include source.h.
* nto-tdep.c: Include source.h.
* mi/mi-cmd-env.c: Include source.h.
* infcmd.c: Include source.h.
* exec.c: Include source.h.
* defs.h (enum openp_flag, openp, source_full_path_of, mod_path)
(add_path, directory_switch, source_path, init_source_path): Move
declarations...
* source.h (enum openp_flag, openp, source_full_path_of, mod_path)
(add_path, directory_switch, source_path, init_source_path):
...here.
This changes a couple of solib.c functions -- exec_file_find and
solib_find -- to return a unique_xmalloc_ptr, and then fixes up the
users. This allows the removal of some cleanups.
This also changes solib_bfd_open to not take ownership of its
argument. I think this change is somewhat cleaner.
gdb/ChangeLog
2018-02-14 Tom Tromey <tom@tromey.com>
* solist.h (exec_file_find, solib_find): Return
unique_xmalloc_ptr.
(solib_bfd_fopen): Take a const char *.
* solib.c (solib_find_1): Return unique_xmalloc_ptr.
(exec_file_find, solib_find): Likewise.
(solib_bfd_fopen): Do not take ownership of "pathname".
(solib_bfd_open): Use unique_xmalloc_ptr.
* solib-darwin.c (darwin_bfd_open): Use unique_xmalloc_ptr.
* solib-aix.c (solib_aix_bfd_open): Use unique_xmalloc_ptr.
* infrun.c (follow_exec): Use unique_xmalloc_ptr.
* exec.c (exec_file_locate_attach): Use unique_xmalloc_ptr.
This introduces a helper function, new_bfd_ref, that calls gdb_bfd_ref
and returns a gdb_bfd_ref_ptr. Then it updates several places to use
this.
ChangeLog
2017-10-20 Tom Tromey <tom@tromey.com>
* exec.c (exec_file_attach): Use new_bfd_ref.
* symfile-mem.c (symbol_file_add_from_memory): Use new_bfd_ref.
* gdb_bfd.c (gdb_bfd_open, gdb_bfd_fopen, gdb_bfd_openr)
(gdb_bfd_openw, gdb_bfd_openr_iovec, gdb_bfd_fdopenr): Use
new_bfd_ref.
* gdb_bfd.h (new_bfd_ref): New function.
This patch replaces the last usages of VEC(mem_range_s) with
std::vector<mem_range>. This allows getting rid of a few cleanups and
of the DEF_VEC_O(mem_range_s).
I added a test for normalize_mem_ranges to make sure I didn't break
anything there.
Regtested on the buildbot.
gdb/ChangeLog:
* memrange.h (struct mem_range): Define operator< and operator==.
(mem_range_s): Remove.
(DEF_VEC_O (mem_range_s)): Remove.
(normalize_mem_ranges): Change parameter type to std::vector.
* memrange.c (compare_mem_ranges): Remove.
(normalize_mem_ranges): Change parameter type to std::vector,
adjust to vector change.
* exec.c (section_table_available_memory): Return vector, remove
parameter.
(section_table_read_available_memory): Adjust to std::vector
change.
* remote.c (remote_read_bytes): Adjust to std::vector
change.
* tracepoint.h (traceframe_available_memory): Change parameter
type to std::vector.
* tracepoint.c (traceframe_available_memory): Change parameter
type to std::vector, adjust.
* gdb/mi/mi-main.c (mi_cmd_trace_frame_collected): Adjust to
std::vector change.
* gdb/Makefile.in (SUBDIR_UNITTESTS_SRCS): Add
unittests/memrange-selftests.c.
(SUBDIR_UNITTESTS_OBS): Add memrange-selftests.o.
* gdb/unittests/memrange-selftests.c: New file.
Note that this commit also changes deprecated_file_changed_hook -- not
used in the tree, but Insight will require a (presumably minor)
change.
gdb/ChangeLog
2017-09-27 Tom Tromey <tom@tromey.com>
* symfile.c (symbol_file_command): Constify.
* gdbcore.h (deprecated_file_changed_hook): Constify.
* exec.c (deprecated_file_changed_hook, exec_file_command)
(file_command): Constify.
* defs.h (symbol_file_command): Constify.
This changes gdb_realpath to return a unique_xmalloc_ptr and fixes up
the callers. This allows removing some cleanups. This change by
itself caused xfullpath.exp to fail; and attempting to fix that ran
into various problems (like .get() being optimized out); so this patch
also rewrites xfullpath.exp to be a C++ selftest instead.
ChangeLog
2017-08-22 Tom Tromey <tom@tromey.com>
* exec.c (exec_file_attach): Update.
* linux-thread-db.c (try_thread_db_load): Update.
* guile/scm-safe-call.c (gdbscm_safe_source_script): Update.
* utils.c (gdb_realpath): Change return type.
(gdb_realpath_keepfile): Update.
(gdb_realpath_check_trailer, gdb_realpath_tests): New functions.
(_initialize_utils): Register the new self test.
* source.c (openp): Update.
(find_and_open_source): Update.
* nto-tdep.c (nto_find_and_open_solib): Update.
* main.c (set_gdb_data_directory): Update.
(captured_main_1): Update.
* dwarf2read.c (dwarf2_get_dwz_file): Update
(dw2_map_symbol_filenames): Update.
* auto-load.c (auto_load_safe_path_vec_update): Update.
(filename_is_in_auto_load_safe_path_vec): Change type of
"filename_realp".
(auto_load_objfile_script): Update.
(file_is_auto_load_safe): Update. Use std::string.
* utils.h (gdb_realpath): Return a gdb::unique_xmalloc_ptr.
testsuite/ChangeLog
2017-08-22 Tom Tromey <tom@tromey.com>
* gdb.gdb/xfullpath.exp: Remove.
This changes gdb_realpath_keepfile to return a unique_xmalloc_ptr, and
fixes up the callers.
ChangeLog
2017-08-22 Tom Tromey <tom@tromey.com>
* utils.c (gdb_realpath_keepfile): Return a
gdb::unique_xmalloc_ptr.
* exec.c (exec_file_attach): Update.
* utils.h (gdb_realpath_keepfile): Return a
gdb::unique_xmalloc_ptr.
This introduces gdb_argv, a class wrapping an "argv" pointer; that is,
a pointer to a NULL-terminated array of char*, where both the array
and each non-NULL element in the array are xmalloc'd.
This patch then changes most users of gdb_buildargv to use gdb_argv
instead.
ChangeLog
2017-08-03 Tom Tromey <tom@tromey.com>
* utils.h (struct gdb_argv_deleter): New.
(gdb_argv): New class.
* utils.c (gdb_argv::reset): New method.
* tracepoint.c (delete_trace_variable_command): Use gdb_argv.
* tracefile.c (tsave_command): Use gdb_argv.
* top.c (new_ui_command): Use gdb_argv.
* symmisc.c (maintenance_print_symbols)
(maintenance_print_msymbols, maintenance_expand_symtabs): Use gdb_argv.
* symfile.c (symbol_file_command, generic_load)
(remove_symbol_file_command): Use gdb_argv.
* stack.c (backtrace_command): Use gdb_argv.
* source.c (add_path, show_substitute_path_command)
(unset_substitute_path_command, set_substitute_path_command):
Use gdb_argv.
* skip.c (skip_command): Use gdb_argv. Use gdb_buildargv.
* ser-mingw.c (pipe_windows_open): Use gdb_argv.
* remote.c (extended_remote_run, remote_put_command)
(remote_get_command, remote_delete_command): Use gdb_argv.
* remote-sim.c (gdbsim_load, gdbsim_create_inferior)
(gdbsim_open): Use gdb_argv.
* python/py-cmd.c (gdbpy_string_to_argv): Use gdb_argv.
* psymtab.c (maintenance_print_psymbols): Use gdb_argv.
* procfs.c (procfs_info_proc): Use gdb_argv.
* interps.c (interpreter_exec_cmd): Use gdb_argv.
* infrun.c (handle_command): Use gdb_argv.
* inferior.c (add_inferior_command, clone_inferior_command):
Use gdb_argv.
* guile/scm-string.c (gdbscm_string_to_argv): Use gdb_argv.
* exec.c (exec_file_command): Use gdb_argv.
* cli/cli-cmds.c (alias_command): Use gdb_argv.
* compile/compile.c (build_argc_argv): Use gdb_argv.
After all the make_cleanup_restore_current_thread fixing, I thought
I'd convert that and its relatives (which are all cleanups) to RAII
classes.
scoped_restore_current_pspace_and_thread was put in a separate file to
avoid a circular dependency.
Tested on x86-64 Fedora 23, native and gdbserver.
gdb/ChangeLog:
2017-05-04 Pedro Alves <palves@redhat.com>
* Makefile.in (SFILES): Add progspace-and-thread.c.
(HFILES_NO_SRCDIR): Add progspace-and-thread.h.
(COMMON_OBS): Add progspace-and-thread.o.
* breakpoint.c: Include "progspace-and-thread.h".
(update_inserted_breakpoint_locations)
(insert_breakpoint_locations, create_longjmp_master_breakpoint):
Use scoped_restore_current_pspace_and_thread.
(create_std_terminate_master_breakpoint): Use
scoped_restore_current_program_space.
(remove_breakpoint): Use scoped_restore_current_pspace_and_thread.
(print_breakpoint_location): Use
scoped_restore_current_program_space.
(bp_loc_is_permanent): Use
scoped_restore_current_pspace_and_thread.
(resolve_sal_pc): Use scoped_restore_current_pspace_and_thread.
(download_tracepoint_locations): Use
scoped_restore_current_pspace_and_thread.
(breakpoint_re_set): Use scoped_restore_current_pspace_and_thread.
* exec.c (exec_close_1): Use scoped_restore_current_program_space.
(enum step_over_calls_kind): Moved from inferior.h.
(class scoped_restore_current_thread): New class.
* gdbthread.h (make_cleanup_restore_current_thread): Delete
declaration.
(scoped_restore_current_thread): New class.
* infcmd.c: Include "common/gdb_optional.h".
(continue_1, proceed_after_attach): Use
scoped_restore_current_thread.
(notice_new_inferior): Use scoped_restore_current_thread.
* inferior.c: Include "progspace-and-thread.h".
(restore_inferior, save_current_inferior): Delete.
(add_inferior_command, clone_inferior_command): Use
scoped_restore_current_pspace_and_thread.
* inferior.h (scoped_restore_current_inferior): New class.
* infrun.c: Include "progspace-and-thread.h" and
"common/gdb_optional.h".
(follow_fork_inferior): Use
scoped_restore_current_pspace_and_thread.
(scoped_restore_exited_inferior): New class.
(handle_vfork_child_exec_or_exit): Use
scoped_restore_exited_inferior,
scoped_restore_current_pspace_and_thread,
scoped_restore_current_thread and scoped_restore.
(fetch_inferior_event): Use scoped_restore_current_thread.
* linespec.c (decode_line_full, decode_line_1): Use
scoped_restore_current_program_space.
* mi/mi-main.c: Include "progspace-and-thread.h".
(exec_continue): Use scoped_restore_current_thread.
(mi_cmd_exec_run): Use scoped_restore_current_pspace_and_thread.
(mi_cmd_trace_frame_collected): Use scoped_restore_current_thread.
* proc-service.c (ps_pglobal_lookup): Use
scoped_restore_current_program_space.
* progspace-and-thread.c: New file.
* progspace-and-thread.h: New file.
* progspace.c (release_program_space, clone_program_space): Use
scoped_restore_current_program_space.
(restore_program_space, save_current_program_space)
(save_current_space_and_thread): Delete.
(switch_to_program_space_and_thread): Moved to
progspace-and-thread.c.
* progspace.h (save_current_program_space)
(save_current_space_and_thread): Delete declarations.
(scoped_restore_current_program_space): New class.
* remote.c (remote_btrace_maybe_reopen): Use
scoped_restore_current_thread.
* symtab.c: Include "progspace-and-thread.h".
(skip_prologue_sal): Use scoped_restore_current_pspace_and_thread.
* thread.c (print_thread_info_1): Use
scoped_restore_current_thread.
(struct current_thread_cleanup): Delete.
(do_restore_current_thread_cleanup)
(restore_current_thread_cleanup_dtor): Rename/convert both to ...
(scoped_restore_current_thread::~scoped_restore_current_thread):
... this new dtor.
(make_cleanup_restore_current_thread): Rename/convert to ...
(scoped_restore_current_thread::scoped_restore_current_thread):
... this new ctor.
(thread_apply_all_command): Use scoped_restore_current_thread.
(thread_apply_command): Use scoped_restore_current_thread.
* tracepoint.c (tdump_command): Use scoped_restore_current_thread.
* varobj.c (value_of_root_1): Use scoped_restore_current_thread.
This introduces a new specialization of gdb::ref_ptr that can be used
to manage BFD reference counts. Then it changes most places in gdb to
use this new class, rather than explicit reference-counting or
cleanups. This patch removes make_cleanup_bfd_unref.
If you look you will see a couple of spots using "release" where a use
of gdb_bfd_ref_ptr would be cleaner. These will be fixed in the next
patch.
I think this patch fixes some latent bugs. For example, it seems to
me that previously objfpy_add_separate_debug_file leaked a BFD.
I'm not 100% certain that the macho_symfile_read_all_oso change is
correct. The existing code here is hard for me to follow. One goal
of this sort of automated reference counting, though, is to make it
more difficult to make logic errors; so hopefully the code is clear
now.
2017-01-10 Tom Tromey <tom@tromey.com>
* windows-tdep.c (windows_xfer_shared_library): Update.
* windows-nat.c (windows_make_so): Update.
* utils.h (make_cleanup_bfd_unref): Remove.
* utils.c (do_bfd_close_cleanup, make_cleanup_bfd_unref): Remove.
* symfile.h (symfile_bfd_open)
(find_separate_debug_file_in_section): Return gdb_bfd_ref_ptr.
* symfile.c (read_symbols, symbol_file_add)
(separate_debug_file_exists): Update.
(symfile_bfd_open): Return gdb_bfd_ref_ptr.
(generic_load, reread_symbols): Update.
* symfile-mem.c (symbol_file_add_from_memory): Update.
* spu-linux-nat.c (spu_bfd_open): Return gdb_bfd_ref_ptr.
(spu_symbol_file_add_from_memory): Update.
* solist.h (struct target_so_ops) <bfd_open>: Return
gdb_bfd_ref_ptr.
(solib_bfd_fopen, solib_bfd_open): Return gdb_bfd_ref_ptr.
* solib.c (solib_bfd_fopen, solib_bfd_open): Return
gdb_bfd_ref_ptr.
(solib_map_sections, reload_shared_libraries_1): Update.
* solib-svr4.c (enable_break): Update.
* solib-spu.c (spu_bfd_fopen): Return gdb_bfd_ref_ptr.
* solib-frv.c (enable_break2): Update.
* solib-dsbt.c (enable_break): Update.
* solib-darwin.c (gdb_bfd_mach_o_fat_extract): Return
gdb_bfd_ref_ptr.
(darwin_solib_get_all_image_info_addr_at_init): Update.
(darwin_bfd_open): Return gdb_bfd_ref_ptr.
* solib-aix.c (solib_aix_bfd_open): Return gdb_bfd_ref_ptr.
* record-full.c (record_full_save): Update.
* python/py-objfile.c (objfpy_add_separate_debug_file): Update.
* procfs.c (insert_dbx_link_bpt_in_file): Update.
* minidebug.c (find_separate_debug_file_in_section): Return
gdb_bfd_ref_ptr.
* machoread.c (macho_add_oso_symfile): Change abfd to
gdb_bfd_ref_ptr.
(macho_symfile_read_all_oso): Update.
(macho_check_dsym): Return gdb_bfd_ref_ptr.
(macho_symfile_read): Update.
* jit.c (bfd_open_from_target_memory): Return gdb_bfd_ref_ptr.
(jit_bfd_try_read_symtab): Update.
* gdb_bfd.h (gdb_bfd_open, gdb_bfd_fopen, gdb_bfd_openr)
(gdb_bfd_openw, gdb_bfd_openr_iovec)
(gdb_bfd_openr_next_archived_file, gdb_bfd_fdopenr): Return
gdb_bfd_ref_ptr.
(gdb_bfd_ref_policy): New struct.
(gdb_bfd_ref_ptr): New typedef.
* gdb_bfd.c (gdb_bfd_open, gdb_bfd_fopen, gdb_bfd_openr)
(gdb_bfd_openw, gdb_bfd_openr_iovec)
(gdb_bfd_openr_next_archived_file, gdb_bfd_fdopenr): Return
gdb_bfd_ref_ptr.
* gcore.h (create_gcore_bfd): Return gdb_bfd_ref_ptr.
* gcore.c (create_gcore_bfd): Return gdb_bfd_ref_ptr.
(gcore_command): Update.
* exec.c (exec_file_attach): Update.
* elfread.c (elf_symfile_read): Update.
* dwarf2read.c (dwarf2_get_dwz_file): Update.
(try_open_dwop_file, open_dwo_file): Return gdb_bfd_ref_ptr.
(open_and_init_dwo_file): Update.
(open_dwp_file): Return gdb_bfd_ref_ptr.
(open_and_init_dwp_file): Update.
* corelow.c (core_open): Update.
* compile/compile-object-load.c (compile_object_load): Update.
* common/gdb_ref_ptr.h (ref_ptr::operator->): New operator.
* coffread.c (coff_symfile_read): Update.
* cli/cli-dump.c (bfd_openr_or_error, bfd_openw_or_error): Return
gdb_bfd_ref_ptr. Rename.
(dump_bfd_file, restore_command): Update.
* build-id.h (build_id_to_debug_bfd): Return gdb_bfd_ref_ptr.
* build-id.c (build_id_to_debug_bfd): Return gdb_bfd_ref_ptr.
(find_separate_debug_file_by_buildid): Update.
This applies the second part of GDB's End of Year Procedure, which
updates the copyright year range in all of GDB's files.
gdb/ChangeLog:
Update copyright year range in all GDB files.
The following testcases make GDB crash whenever an invalid sysroot is
provided, when GDB is unable to find a valid path to the symbol file:
gdb.base/catch-syscall.exp
gdb.base/execl-update-breakpoints.exp
gdb.base/foll-exec-mode.exp
gdb.base/foll-exec.exp
gdb.base/foll-vfork.exp
gdb.base/pie-execl.exp
gdb.multi/bkpt-multi-exec.exp
gdb.python/py-finish-breakpoint.exp
gdb.threads/execl.exp
gdb.threads/non-ldr-exc-1.exp
gdb.threads/non-ldr-exc-2.exp
gdb.threads/non-ldr-exc-3.exp
gdb.threads/non-ldr-exc-4.exp
gdb.threads/thread-execl.exp
The immediate cause of the segv is that follow_exec is passing a NULL
argument (the result of exec_file_find) to strlen.
However, the problem is deeper than that: follow_exec simply isn't
prepared for the case where sysroot translation fails to locate the
new executable. Actually all callers of exec_file_find have bugs due
to confusion between host and target pathnames. This commit attempts
to fix all that.
In terms of the testcases that were formerly segv'ing, GDB now prints
a warning but continues execution of the new program, so that the
tests now mostly FAIL instead. You could argue the FAILs are due to a
legitimate problem with the test environment setting up the sysroot
translation incorrectly.
A new representative test is added which exercises the ne wwarning
code path even with native testing.
Tested on x86_64 Fedora 23, native and gdbserver.
gdb/ChangeLog:
2016-10-25 Sandra Loosemore <sandra@codesourcery.com>
Luis Machado <lgustavo@codesourcery.com>
Pedro Alves <palves@redhat.com>
PR gdb/20569
* exceptions.c (exception_print_same): Moved here from exec.c.
* exceptions.h (exception_print_same): Declare.
* exec.h: Include "symfile-add-flags.h".
(try_open_exec_file): New declaration.
* exec.c (exception_print_same): Moved to exceptions.c.
(try_open_exec_file): New function.
(exec_file_locate_attach): Rename exec_file and full_exec_path
variables to avoid confusion between target and host pathnames.
Move pathname processing logic to exec_file_find. Do not return
early if pathname lookup fails; Call try_open_exec_file.
* infrun.c (follow_exec): Split and rename execd_pathname variable
to avoid confusion between target and host pathnames. Warn if
pathname lookup fails. Pass target pathname to
target_follow_exec, not hostpathname. Call try_open_exec_file.
* main.c (symbol_file_add_main_adapter): New function.
(captured_main_1): Use it.
* solib-svr4.c (open_symbol_file_object): Adjust to pass
symfile_add_flags to symbol_file_add_main.
* solib.c (exec_file_find): Incorporate fallback logic for relative
pathnames formerly in exec_file_locate_attach.
* symfile.c (symbol_file_add_main, symbol_file_add_main_1):
Replace 'from_tty' parameter with a symfile_add_file.
(symbol_file_command): Adjust to pass symfile_add_flags to
symbol_file_add_main.
* symfile.h (symbol_file_add_main): Replace 'from_tty' parameter
with a symfile_add_file.
gdb/testsuite/ChangeLog:
2016-10-25 Luis Machado <lgustavo@codesourcery.com>
* gdb.base/exec-invalid-sysroot.exp: New file.
This patch addresses a potential NULL pointer dereference when we try to
duplicate a string. The input pointer can be NULL and that may lead to
crashes. We simply add a check for that case.
gdb/ChangeLog:
2016-10-24 Luis Machado <lgustavo@codesourcery.com>
* exec.c (exec_file_locate_attach): Prevent NULL pointer dereference
when duplicating a string.
This patch fixes a gotcha when comparing exception's messages in
exception_print_same. It should've used the statically-allocated
string versions msg1 and msg2 instead.
As is, it could lead to crashes.
gdb/ChangeLog:
2016-10-24 Luis Machado <lgustavo@codesourcery.com>
* exec.c (exception_print_same): Fix string comparison to use
statically-allocated ones.
Regression: gdb --pid $(pidof qemu-system-x86_64) stopped working with gdb 7.11.1
https://sourceware.org/bugzilla/show_bug.cgi?id=20609
It was reported for qemu-system-x86_64 but it happens for any multithreaded
inferior with a JIT debugging hook.
136613ef0c6850427317e57be1b644080ff6decb is the first bad commit
Author: Pedro Alves <palves@redhat.com>
Fix PR gdb/19828: gdb -p <process from a container>: internal error
Message-ID: <cbdf2e04-4fa8-872a-2a23-08c9c1b26e00@redhat.com>
https://sourceware.org/ml/gdb-patches/2016-05/msg00450.html
jit_breakpoint_re_set() is specific by trying to insert a breakpoint into the
main executable, not into a shared library. During attachment GDB thinks it
needs to use 'breakpoint always-inserted' from
breakpoints_should_be_inserted_now() as a newly attached thread is
'thread_info->executing' due to 'lwp_info->must_set_ptrace_flags' enabled and
the task not yet stopped. This did not happen before the 'bad commit' above
which adds tracking of such thread.
GDB then fails to insert the breakpoints to invalid address as PIE executable
gets properly relocated during later phase of attachment. One can see in the
backtraces below:
-> jit_breakpoint_re_set_internal()
later:
-> svr4_exec_displacement()
One can suppress the initial breakpoint_re_set() call as there will be another
breakpoint_re_set() done from the final post_create_inferior() call in
setup_inferior().
BTW additionally 'threads_executing' cache bool is somehow stale (somewhere is
missing update_threads_executing()). I was trying to deal with that in my
first/second attempt below but in my final third attempt (attached) I have
left it as it is.
First attempt trying not to falsely require 'breakpoint always-inserted':
https://people.redhat.com/jkratoch/rhbz1375553-fix1.patch
Reduced first attempt:
https://people.redhat.com/jkratoch/rhbz1375553-fix2.patch
The third attempt suppresses breakpoint insertion until PIE executable gets
relocated by svr4_exec_displacement(). Applied.
gdb/ChangeLog
2016-09-29 Jan Kratochvil <jan.kratochvil@redhat.com>
PR gdb/20609 - attach of JIT-debug-enabled inf 7.11.1 regression
* exec.c (exec_file_locate_attach): Add parameter defer_bp_reset.
Use it.
* gdbcore.h (exec_file_locate_attach): Add parameter defer_bp_reset.
* infcmd.c (setup_inferior): Update caller.
* remote.c (remote_add_inferior): Likewise.
gdb/testsuite/ChangeLog
2016-09-29 Jan Kratochvil <jan.kratochvil@redhat.com>
PR gdb/20609 - attach of JIT-debug-enabled inf 7.11.1 regression
* gdb.base/jit-attach-pie.c: New file.
* gdb.base/jit-attach-pie.exp: New file.
Building on a 32-bit host fails currently with errors like:
.../src/gdb/exec.c: In function ‘target_xfer_status section_table_read_available_memory(gdb_byte*, ULONGEST, ULONGEST, ULONGEST*)’:
.../src/gdb/exec.c:801:54: error: no matching function for call to ‘min(ULONGEST, long unsigned int)’
end = std::min (offset + len, r->start + r->length);
^
In file included from /usr/include/c++/5.3.1/algorithm:61:0,
from .../src/gdb/exec.c:46:
/usr/include/c++/5.3.1/bits/stl_algobase.h:195:5: note: candidate: template<class _Tp> const _Tp& std::min(const _Tp&, const _Tp&)
min(const _Tp& __a, const _Tp& __b)
^
/usr/include/c++/5.3.1/bits/stl_algobase.h:195:5: note: template argument deduction/substitution failed:
.../src/gdb/exec.c:801:54: note: deduced conflicting types for parameter ‘const _Tp’ (‘long long unsigned int’ and ‘long unsigned int’)
end = std::min (offset + len, r->start + r->length);
^
In file included from /usr/include/c++/5.3.1/algorithm:61:0,
from .../src/gdb/exec.c:46:
/usr/include/c++/5.3.1/bits/stl_algobase.h:243:5: note: candidate: template<class _Tp, class _Compare> const _Tp& std::min(const _Tp&, const _Tp&, _Compare)
min(const _Tp& __a, const _Tp& __b, _Compare __comp)
^
The problem is that the std::min/std::max function templates use the
same type for both parameters. When the argument types are different,
the compiler can't automatically deduce which template specialization
to pick from the arguments' types.
Fix that by specifying the specialization we want explicitly.
gdb/ChangeLog:
2016-09-18 Pedro Alves <palves@redhat.com>
* breakpoint.c (hardware_watchpoint_inserted_in_range): Explicitly
specify the std:min/std::max specialization.
* exec.c (section_table_read_available_memory): Likewise.
* remote.c (remote_read_qxfer): Likewise.
* target.c (simple_verify_memory): Likewise.
When we attempt to debug a process using GDBserver in standard remote mode
without a symbol file on GDB's end, we may run into an issue where GDB cuts
the connection attempt short due to an error. The error is caused by not
being able to open a symbol file, like so:
--
(gdb) set sysroot
(gdb) tar rem :2345
Remote debugging using :2345
/proc/23769/exe: Permission denied.
(gdb) i r
The program has no registers now.
(gdb)
It should've been like this:
(gdb) set sysroot
(gdb) tar rem :2345
Remote debugging using :2345
warning: /tmp/symbol-file: Permission denied.
0xf7ddb2d0 in ?? ()
(gdb) i r
eax 0x0 0
ecx 0x0 0
edx 0x0 0
ebx 0x0 0
esp 0xffffdfa0 0xffffdfa0
ebp 0x0 0x0
esi 0x0 0
edi 0x0 0
eip 0xf7ddb2d0 0xf7ddb2d0
eflags 0x200 [ IF ]
cs 0x33 51
ss 0x2b 43
ds 0x0 0
es 0x0 0
fs 0x0 0
gs 0x0 0
(gdb)
This is caused by a couple of function calls within exec_file_locate_attach
that can potentially throw errors.
The following patch guards both exec_file_attach and symbol_file_add_main to
prevent the errors from disrupting the connection process.
There was also a case where native GDB tripped on this problem, but it was
mostly fixed by bf74e428bc.
Regression-tested on x86-64/Ubuntu.
gdb/ChangeLog:
2016-04-13 Luis Machado <lgustavo@codesourcery.com>
* exec.c (exec_file_locate_attach): Guard a couple functions
that can throw errors.
(exception_print_same): New helper function.
Philippe Waroquiers
Pedro Alves
Simon Marchi
Joel Brobecker
Tom Tromey
Alan Modra
Christian Biesinger
Tom Tromey
Sergio Durigan Junior
Simon Marchi
John Baldwin
Sandra Loosemore
Luis Machado
Jan Kratochvil