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44 Commits

Author SHA1 Message Date
Tankut Baris Aktemur
482155e609 gdbserver/server: make some functions void 
The 'handle_v_attach', 'handle_v_run', and 'handle_v_kill' functions'
return values are unused.  They indicate error/success result by
putting packets.  Make the functions void.

Tested by rebuilding.

gdbserver/ChangeLog:
2021-05-06  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	* server.cc (handle_v_attach)
	(handle_v_run)
	(handle_v_kill): Make void.
 2021-05-06 15:15:38 +02:00
Tankut Baris Aktemur
04977957ec gdbserver: constify the 'pid_to_exec_file' target op 
gdbserver/ChangeLog:
2021-04-12  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	* target.h (class process_stratum_target) <pid_to_exec_file>:
	Constify the return type.  Update the definition/references below.
	* target.cc (process_stratum_target::pid_to_exec_file)
	* linux-low.h (class linux_process_target) <pid_to_exec_file>
	* linux-low.cc (linux_process_target::pid_to_exec_file)
	* netbsd-low.h (class netbsd_process_target) <pid_to_exec_file>
	* netbsd-low.cc (netbsd_process_target::pid_to_exec_file)
	* server.cc (handle_qxfer_exec_file)
 2021-04-12 16:36:25 +02:00
Luis Machado
782c1ab836 Fix inverted logic bug 
During reviews, I changed the success/failure variables from int to bool, but
missed updating the code in a couple spots.  Given the logic inversion, the
gdbserver code fails instead of succeeding.

Fixed with the following patch. Seems fairly obvious, so I'll push it soon.

gdbserver/ChangeLog:

2021-03-30  Luis Machado  <luis.machado@linaro.org>

	* server.cc (handle_general_set, handle_query): Update variable
	to bool and fix verification logic.
 2021-03-30 09:23:11 -03:00
Luis Machado
c2cfa6542c Unit tests for gdbserver memory tagging remote packets 
Add some unit testing to exercise the functions handling the qMemTags and
QMemTags packets as well as feature support.

gdbserver/ChangeLog:

2021-03-24  Luis Machado  <luis.machado@linaro.org>

	* server.cc (test_memory_tagging_functions): New function.
	(captured_main): Register test_memory_tagging_functions.
 2021-03-24 14:49:54 -03:00
Luis Machado
546b77fe78 GDBserver remote packet support for memory tagging 
This patch adds the generic remote bits to gdbserver so it can check for memory
tagging support and handle fetch tags and store tags requests.

gdbserver/ChangeLog:

2021-03-24  Luis Machado  <luis.machado@linaro.org>

	* remote-utils.cc (decode_m_packet_params): Renamed from ...
	(decode_m_packet): ... this, which now calls decode_m_packet_params.
	Make char * param/return const char *.
	(decode_M_packet): Use decode_m_packet_params and make char * param
	const char *.
	* remote-utils.h (decode_m_packet_params): New prototype.
	(decode_m_packet): Constify char pointers.
	(decode_M_packet): Likewise.
	* server.cc (create_fetch_memtags_reply)
	(parse_store_memtags_request): New
	functions.
	(handle_general_set): Handle the QMemTags packet.
	(parse_fetch_memtags_request): New function.
	(handle_query): Handle the qMemTags packet and advertise memory
	tagging support.
	(captured_main): Initialize memory tagging flag.
	* server.h (struct client_state): Initialize memory tagging flag.
	* target.cc (process_stratum_target::supports_memory_tagging)
	(process_stratum_target::fetch_memtags)
	(process_stratum_target::store_memtags): New methods.
	* target.h: Include gdbsupport/byte-vector.h.
	(class process_stratum_target) <supports_memory_tagging>
	<fetch_memtags, store_memtags>: New class virtual methods.
	(target_supports_memory_tagging): Define.
 2021-03-24 14:49:21 -03:00
Tankut Baris Aktemur
d171632faa gdbserver: convert the global dll list into a process_info field 
The 'all_dlls' list is global.  This would cause the complete dll list
to be reported for individual processes.  Move the list into the
process_info struct.

Currently the dll list is used only by the win32-low target, which
does not support the multi-process feature.  Therefore, it practically
does not matter whether the list is global or per-process.  However,
there may be targets that are outside the binutils-gdb repo (e.g. we,
at Intel, have such a target) that have multi-process and use the dll
list.  So, it makes sense to do the right thing.

gdbserver/ChangeLog:
2021-03-22  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	* inferiors.h (struct process_info) <all_dlls, dlls_changed>: New
	fields.
	* dll.h (loaded_dll)
	(unloaded_dll): Declare an overloaded version that takes a proc
	parameter.
	* dll.cc (loaded_dll)
	(unloaded_dll): Implement the overloaded versions.
	(clear_dlls): Clear all process' dll lists.
	(all_dlls, dlls_changed): Remove the global variables.
	* remote-utils.cc (prepare_resume_reply): Update to consider a dll
	list per proc.
	* server.cc (handle_qxfer_libraries): Ditto.
	(handle_v_attach): Ditto.
	(captured_main): Ditto.
 2021-03-22 09:18:04 +01:00
Pedro Alves
b0083dd72f Fix a couple vStopped pending ack bugs 
A following patch will add a testcase that has two processes with
threads stepping over a breakpoint continuously, and then detaches
from one of the processes while threads are running.  The other
process continues stepping over its breakpoint.  And then the testcase
sends a SIGUSR1, expecting that GDB reports it.  That would sometimes
hang against gdbserver, due to the bugs fixed here.  Both bugs are
related, in that they're about remote protocol asynchronous Stop
notifications.  There's a bug in GDB, and another in GDBserver.

The GDB bug:

- when we detach from a process, the remote target discards any
  pending RSP notification related to that process, including the
  in-flight, yet-unacked notification.  Discarding the in-flight
  notification is the problem.  Until the in-flight notification is
  acked with a vStopped packet, the server won't send another %Stop
  notification.  As a result, the debug session gets messed up.  In
  the new testcase's case, GDB would hang inside stop_all_threads,
  waiting for a stop for one of the process'es threads, which never
  arrived -- its stop reply was permanently stuck in the stop reply
  queue, waiting for a vStopped packet that never arrived.

  In summary:

   1. GDBserver sends stop notification about thread X, the remote
      target receives it and stores it
   2. At the same time, GDB detaches thread X's inferior
   3. The remote target discards the received stop notification
   4. GDBserver waits forever for the ack

The GDBserver bug:

  GDBserver has the opposite bug.  It also discards notifications for
  the process being detached.  If that discards the head of the
  notification queue, when gdb sends an ack, it ends up acking the
  _next_ notification.  Meaning, gdb loses one notification.  In the
  testcase, this results in a similar hang in stop_all_threads.

So we have two very similar bugs in GDB and GDBserver, both resulting
in a similar symptom.  That's why I'm fixing them both at the same
time.

gdb/ChangeLog:

	* remote.c (remote_notif_stop_ack): Don't error out on
	TARGET_WAITKIND_IGNORE; instead, just ignore the notification.
	(remote_target::discard_pending_stop_replies): Don't delete
	in-flight notification; instead, clear its contents.

gdbserver/ChangeLog:

	* server.cc (discard_queued_stop_replies): Don't ever discard the
	notification at the head of the list.
 2021-02-03 01:14:46 +00:00
Joel Brobecker
3666a04883 Update copyright year range in all GDB files 
This commits the result of running gdb/copyright.py as per our Start
of New Year procedure...

gdb/ChangeLog

        Update copyright year range in copyright header of all GDB files.
 2021-01-01 12:12:21 +04:00
Joel Brobecker
2b47c078fd Update copyright year in version message for gdb, gdbserver and gdbreplay 
gdb/ChangeLog:

        * top.c (print_gdb_version): Update copyright year.

gdbserver/ChangeLog:

        * server.cc (gdbserver_version): Update copyright year.
        * gdbreplay.cc (gdbreplay_version): Likewise.
 2021-01-01 11:53:14 +04:00
Andrew Burgess
81fdd7acec gdbserver: add missing --disable-packet options to help text 
The help text for the --disable-packet option was missing one of the
possible values.

As this option is for maintainers only it is explicitly not documented
in gdb/doc/gdb.texinfo, so no update is needed there.

gdbserver/ChangeLog:

	* server.cc (gdbserver_usage): Add missing option to usage text.
	(gdbserver_show_disableable): Likewise.
 2020-11-11 09:08:31 +00:00
Simon Marchi
dda83cd783 gdb, gdbserver, gdbsupport: fix leading space vs tabs issues 
Many spots incorrectly use only spaces for indentation (for example,
there are a lot of spots in ada-lang.c).  I've always found it awkward
when I needed to edit one of these spots: do I keep the original wrong
indentation, or do I fix it?  What if the lines around it are also
wrong, do I fix them too?  I probably don't want to fix them in the same
patch, to avoid adding noise to my patch.

So I propose to fix as much as possible once and for all (hopefully).

One typical counter argument for this is that it makes code archeology
more difficult, because git-blame will show this commit as the last
change for these lines.  My counter counter argument is: when
git-blaming, you often need to do "blame the file at the parent commit"
anyway, to go past some other refactor that touched the line you are
interested in, but is not the change you are looking for.  So you
already need a somewhat efficient way to do this.

Using some interactive tool, rather than plain git-blame, makes this
trivial.  For example, I use "tig blame <file>", where going back past
the commit that changed the currently selected line is one keystroke.
It looks like Magit in Emacs does it too (though I've never used it).
Web viewers of Github and Gitlab do it too.  My point is that it won't
really make archeology more difficult.

The other typical counter argument is that it will cause conflicts with
existing patches.  That's true... but it's a one time cost, and those
are not conflicts that are difficult to resolve.  I have also tried "git
rebase --ignore-whitespace", it seems to work well.  Although that will
re-introduce the faulty indentation, so one needs to take care of fixing
the indentation in the patch after that (which is easy).

gdb/ChangeLog:

	* aarch64-linux-tdep.c: Fix indentation.
	* aarch64-ravenscar-thread.c: Fix indentation.
	* aarch64-tdep.c: Fix indentation.
	* aarch64-tdep.h: Fix indentation.
	* ada-lang.c: Fix indentation.
	* ada-lang.h: Fix indentation.
	* ada-tasks.c: Fix indentation.
	* ada-typeprint.c: Fix indentation.
	* ada-valprint.c: Fix indentation.
	* ada-varobj.c: Fix indentation.
	* addrmap.c: Fix indentation.
	* addrmap.h: Fix indentation.
	* agent.c: Fix indentation.
	* aix-thread.c: Fix indentation.
	* alpha-bsd-nat.c: Fix indentation.
	* alpha-linux-tdep.c: Fix indentation.
	* alpha-mdebug-tdep.c: Fix indentation.
	* alpha-nbsd-tdep.c: Fix indentation.
	* alpha-obsd-tdep.c: Fix indentation.
	* alpha-tdep.c: Fix indentation.
	* amd64-bsd-nat.c: Fix indentation.
	* amd64-darwin-tdep.c: Fix indentation.
	* amd64-linux-nat.c: Fix indentation.
	* amd64-linux-tdep.c: Fix indentation.
	* amd64-nat.c: Fix indentation.
	* amd64-obsd-tdep.c: Fix indentation.
	* amd64-tdep.c: Fix indentation.
	* amd64-windows-tdep.c: Fix indentation.
	* annotate.c: Fix indentation.
	* arc-tdep.c: Fix indentation.
	* arch-utils.c: Fix indentation.
	* arch/arm-get-next-pcs.c: Fix indentation.
	* arch/arm.c: Fix indentation.
	* arm-linux-nat.c: Fix indentation.
	* arm-linux-tdep.c: Fix indentation.
	* arm-nbsd-tdep.c: Fix indentation.
	* arm-pikeos-tdep.c: Fix indentation.
	* arm-tdep.c: Fix indentation.
	* arm-tdep.h: Fix indentation.
	* arm-wince-tdep.c: Fix indentation.
	* auto-load.c: Fix indentation.
	* auxv.c: Fix indentation.
	* avr-tdep.c: Fix indentation.
	* ax-gdb.c: Fix indentation.
	* ax-general.c: Fix indentation.
	* bfin-linux-tdep.c: Fix indentation.
	* block.c: Fix indentation.
	* block.h: Fix indentation.
	* blockframe.c: Fix indentation.
	* bpf-tdep.c: Fix indentation.
	* break-catch-sig.c: Fix indentation.
	* break-catch-syscall.c: Fix indentation.
	* break-catch-throw.c: Fix indentation.
	* breakpoint.c: Fix indentation.
	* breakpoint.h: Fix indentation.
	* bsd-uthread.c: Fix indentation.
	* btrace.c: Fix indentation.
	* build-id.c: Fix indentation.
	* buildsym-legacy.h: Fix indentation.
	* buildsym.c: Fix indentation.
	* c-typeprint.c: Fix indentation.
	* c-valprint.c: Fix indentation.
	* c-varobj.c: Fix indentation.
	* charset.c: Fix indentation.
	* cli/cli-cmds.c: Fix indentation.
	* cli/cli-decode.c: Fix indentation.
	* cli/cli-decode.h: Fix indentation.
	* cli/cli-script.c: Fix indentation.
	* cli/cli-setshow.c: Fix indentation.
	* coff-pe-read.c: Fix indentation.
	* coffread.c: Fix indentation.
	* compile/compile-cplus-types.c: Fix indentation.
	* compile/compile-object-load.c: Fix indentation.
	* compile/compile-object-run.c: Fix indentation.
	* completer.c: Fix indentation.
	* corefile.c: Fix indentation.
	* corelow.c: Fix indentation.
	* cp-abi.h: Fix indentation.
	* cp-namespace.c: Fix indentation.
	* cp-support.c: Fix indentation.
	* cp-valprint.c: Fix indentation.
	* cris-linux-tdep.c: Fix indentation.
	* cris-tdep.c: Fix indentation.
	* darwin-nat-info.c: Fix indentation.
	* darwin-nat.c: Fix indentation.
	* darwin-nat.h: Fix indentation.
	* dbxread.c: Fix indentation.
	* dcache.c: Fix indentation.
	* disasm.c: Fix indentation.
	* dtrace-probe.c: Fix indentation.
	* dwarf2/abbrev.c: Fix indentation.
	* dwarf2/attribute.c: Fix indentation.
	* dwarf2/expr.c: Fix indentation.
	* dwarf2/frame.c: Fix indentation.
	* dwarf2/index-cache.c: Fix indentation.
	* dwarf2/index-write.c: Fix indentation.
	* dwarf2/line-header.c: Fix indentation.
	* dwarf2/loc.c: Fix indentation.
	* dwarf2/macro.c: Fix indentation.
	* dwarf2/read.c: Fix indentation.
	* dwarf2/read.h: Fix indentation.
	* elfread.c: Fix indentation.
	* eval.c: Fix indentation.
	* event-top.c: Fix indentation.
	* exec.c: Fix indentation.
	* exec.h: Fix indentation.
	* expprint.c: Fix indentation.
	* f-lang.c: Fix indentation.
	* f-typeprint.c: Fix indentation.
	* f-valprint.c: Fix indentation.
	* fbsd-nat.c: Fix indentation.
	* fbsd-tdep.c: Fix indentation.
	* findvar.c: Fix indentation.
	* fork-child.c: Fix indentation.
	* frame-unwind.c: Fix indentation.
	* frame-unwind.h: Fix indentation.
	* frame.c: Fix indentation.
	* frv-linux-tdep.c: Fix indentation.
	* frv-tdep.c: Fix indentation.
	* frv-tdep.h: Fix indentation.
	* ft32-tdep.c: Fix indentation.
	* gcore.c: Fix indentation.
	* gdb_bfd.c: Fix indentation.
	* gdbarch.sh: Fix indentation.
	* gdbarch.c: Re-generate
	* gdbarch.h: Re-generate.
	* gdbcore.h: Fix indentation.
	* gdbthread.h: Fix indentation.
	* gdbtypes.c: Fix indentation.
	* gdbtypes.h: Fix indentation.
	* glibc-tdep.c: Fix indentation.
	* gnu-nat.c: Fix indentation.
	* gnu-nat.h: Fix indentation.
	* gnu-v2-abi.c: Fix indentation.
	* gnu-v3-abi.c: Fix indentation.
	* go32-nat.c: Fix indentation.
	* guile/guile-internal.h: Fix indentation.
	* guile/scm-cmd.c: Fix indentation.
	* guile/scm-frame.c: Fix indentation.
	* guile/scm-iterator.c: Fix indentation.
	* guile/scm-math.c: Fix indentation.
	* guile/scm-ports.c: Fix indentation.
	* guile/scm-pretty-print.c: Fix indentation.
	* guile/scm-value.c: Fix indentation.
	* h8300-tdep.c: Fix indentation.
	* hppa-linux-nat.c: Fix indentation.
	* hppa-linux-tdep.c: Fix indentation.
	* hppa-nbsd-nat.c: Fix indentation.
	* hppa-nbsd-tdep.c: Fix indentation.
	* hppa-obsd-nat.c: Fix indentation.
	* hppa-tdep.c: Fix indentation.
	* hppa-tdep.h: Fix indentation.
	* i386-bsd-nat.c: Fix indentation.
	* i386-darwin-nat.c: Fix indentation.
	* i386-darwin-tdep.c: Fix indentation.
	* i386-dicos-tdep.c: Fix indentation.
	* i386-gnu-nat.c: Fix indentation.
	* i386-linux-nat.c: Fix indentation.
	* i386-linux-tdep.c: Fix indentation.
	* i386-nto-tdep.c: Fix indentation.
	* i386-obsd-tdep.c: Fix indentation.
	* i386-sol2-nat.c: Fix indentation.
	* i386-tdep.c: Fix indentation.
	* i386-tdep.h: Fix indentation.
	* i386-windows-tdep.c: Fix indentation.
	* i387-tdep.c: Fix indentation.
	* i387-tdep.h: Fix indentation.
	* ia64-libunwind-tdep.c: Fix indentation.
	* ia64-libunwind-tdep.h: Fix indentation.
	* ia64-linux-nat.c: Fix indentation.
	* ia64-linux-tdep.c: Fix indentation.
	* ia64-tdep.c: Fix indentation.
	* ia64-tdep.h: Fix indentation.
	* ia64-vms-tdep.c: Fix indentation.
	* infcall.c: Fix indentation.
	* infcmd.c: Fix indentation.
	* inferior.c: Fix indentation.
	* infrun.c: Fix indentation.
	* iq2000-tdep.c: Fix indentation.
	* language.c: Fix indentation.
	* linespec.c: Fix indentation.
	* linux-fork.c: Fix indentation.
	* linux-nat.c: Fix indentation.
	* linux-tdep.c: Fix indentation.
	* linux-thread-db.c: Fix indentation.
	* lm32-tdep.c: Fix indentation.
	* m2-lang.c: Fix indentation.
	* m2-typeprint.c: Fix indentation.
	* m2-valprint.c: Fix indentation.
	* m32c-tdep.c: Fix indentation.
	* m32r-linux-tdep.c: Fix indentation.
	* m32r-tdep.c: Fix indentation.
	* m68hc11-tdep.c: Fix indentation.
	* m68k-bsd-nat.c: Fix indentation.
	* m68k-linux-nat.c: Fix indentation.
	* m68k-linux-tdep.c: Fix indentation.
	* m68k-tdep.c: Fix indentation.
	* machoread.c: Fix indentation.
	* macrocmd.c: Fix indentation.
	* macroexp.c: Fix indentation.
	* macroscope.c: Fix indentation.
	* macrotab.c: Fix indentation.
	* macrotab.h: Fix indentation.
	* main.c: Fix indentation.
	* mdebugread.c: Fix indentation.
	* mep-tdep.c: Fix indentation.
	* mi/mi-cmd-catch.c: Fix indentation.
	* mi/mi-cmd-disas.c: Fix indentation.
	* mi/mi-cmd-env.c: Fix indentation.
	* mi/mi-cmd-stack.c: Fix indentation.
	* mi/mi-cmd-var.c: Fix indentation.
	* mi/mi-cmds.c: Fix indentation.
	* mi/mi-main.c: Fix indentation.
	* mi/mi-parse.c: Fix indentation.
	* microblaze-tdep.c: Fix indentation.
	* minidebug.c: Fix indentation.
	* minsyms.c: Fix indentation.
	* mips-linux-nat.c: Fix indentation.
	* mips-linux-tdep.c: Fix indentation.
	* mips-nbsd-tdep.c: Fix indentation.
	* mips-tdep.c: Fix indentation.
	* mn10300-linux-tdep.c: Fix indentation.
	* mn10300-tdep.c: Fix indentation.
	* moxie-tdep.c: Fix indentation.
	* msp430-tdep.c: Fix indentation.
	* namespace.h: Fix indentation.
	* nat/fork-inferior.c: Fix indentation.
	* nat/gdb_ptrace.h: Fix indentation.
	* nat/linux-namespaces.c: Fix indentation.
	* nat/linux-osdata.c: Fix indentation.
	* nat/netbsd-nat.c: Fix indentation.
	* nat/x86-dregs.c: Fix indentation.
	* nbsd-nat.c: Fix indentation.
	* nbsd-tdep.c: Fix indentation.
	* nios2-linux-tdep.c: Fix indentation.
	* nios2-tdep.c: Fix indentation.
	* nto-procfs.c: Fix indentation.
	* nto-tdep.c: Fix indentation.
	* objfiles.c: Fix indentation.
	* objfiles.h: Fix indentation.
	* opencl-lang.c: Fix indentation.
	* or1k-tdep.c: Fix indentation.
	* osabi.c: Fix indentation.
	* osabi.h: Fix indentation.
	* osdata.c: Fix indentation.
	* p-lang.c: Fix indentation.
	* p-typeprint.c: Fix indentation.
	* p-valprint.c: Fix indentation.
	* parse.c: Fix indentation.
	* ppc-linux-nat.c: Fix indentation.
	* ppc-linux-tdep.c: Fix indentation.
	* ppc-nbsd-nat.c: Fix indentation.
	* ppc-nbsd-tdep.c: Fix indentation.
	* ppc-obsd-nat.c: Fix indentation.
	* ppc-ravenscar-thread.c: Fix indentation.
	* ppc-sysv-tdep.c: Fix indentation.
	* ppc64-tdep.c: Fix indentation.
	* printcmd.c: Fix indentation.
	* proc-api.c: Fix indentation.
	* producer.c: Fix indentation.
	* producer.h: Fix indentation.
	* prologue-value.c: Fix indentation.
	* prologue-value.h: Fix indentation.
	* psymtab.c: Fix indentation.
	* python/py-arch.c: Fix indentation.
	* python/py-bpevent.c: Fix indentation.
	* python/py-event.c: Fix indentation.
	* python/py-event.h: Fix indentation.
	* python/py-finishbreakpoint.c: Fix indentation.
	* python/py-frame.c: Fix indentation.
	* python/py-framefilter.c: Fix indentation.
	* python/py-inferior.c: Fix indentation.
	* python/py-infthread.c: Fix indentation.
	* python/py-objfile.c: Fix indentation.
	* python/py-prettyprint.c: Fix indentation.
	* python/py-registers.c: Fix indentation.
	* python/py-signalevent.c: Fix indentation.
	* python/py-stopevent.c: Fix indentation.
	* python/py-stopevent.h: Fix indentation.
	* python/py-threadevent.c: Fix indentation.
	* python/py-tui.c: Fix indentation.
	* python/py-unwind.c: Fix indentation.
	* python/py-value.c: Fix indentation.
	* python/py-xmethods.c: Fix indentation.
	* python/python-internal.h: Fix indentation.
	* python/python.c: Fix indentation.
	* ravenscar-thread.c: Fix indentation.
	* record-btrace.c: Fix indentation.
	* record-full.c: Fix indentation.
	* record.c: Fix indentation.
	* reggroups.c: Fix indentation.
	* regset.h: Fix indentation.
	* remote-fileio.c: Fix indentation.
	* remote.c: Fix indentation.
	* reverse.c: Fix indentation.
	* riscv-linux-tdep.c: Fix indentation.
	* riscv-ravenscar-thread.c: Fix indentation.
	* riscv-tdep.c: Fix indentation.
	* rl78-tdep.c: Fix indentation.
	* rs6000-aix-tdep.c: Fix indentation.
	* rs6000-lynx178-tdep.c: Fix indentation.
	* rs6000-nat.c: Fix indentation.
	* rs6000-tdep.c: Fix indentation.
	* rust-lang.c: Fix indentation.
	* rx-tdep.c: Fix indentation.
	* s12z-tdep.c: Fix indentation.
	* s390-linux-tdep.c: Fix indentation.
	* score-tdep.c: Fix indentation.
	* ser-base.c: Fix indentation.
	* ser-mingw.c: Fix indentation.
	* ser-uds.c: Fix indentation.
	* ser-unix.c: Fix indentation.
	* serial.c: Fix indentation.
	* sh-linux-tdep.c: Fix indentation.
	* sh-nbsd-tdep.c: Fix indentation.
	* sh-tdep.c: Fix indentation.
	* skip.c: Fix indentation.
	* sol-thread.c: Fix indentation.
	* solib-aix.c: Fix indentation.
	* solib-darwin.c: Fix indentation.
	* solib-frv.c: Fix indentation.
	* solib-svr4.c: Fix indentation.
	* solib.c: Fix indentation.
	* source.c: Fix indentation.
	* sparc-linux-tdep.c: Fix indentation.
	* sparc-nbsd-tdep.c: Fix indentation.
	* sparc-obsd-tdep.c: Fix indentation.
	* sparc-ravenscar-thread.c: Fix indentation.
	* sparc-tdep.c: Fix indentation.
	* sparc64-linux-tdep.c: Fix indentation.
	* sparc64-nbsd-tdep.c: Fix indentation.
	* sparc64-obsd-tdep.c: Fix indentation.
	* sparc64-tdep.c: Fix indentation.
	* stabsread.c: Fix indentation.
	* stack.c: Fix indentation.
	* stap-probe.c: Fix indentation.
	* stubs/ia64vms-stub.c: Fix indentation.
	* stubs/m32r-stub.c: Fix indentation.
	* stubs/m68k-stub.c: Fix indentation.
	* stubs/sh-stub.c: Fix indentation.
	* stubs/sparc-stub.c: Fix indentation.
	* symfile-mem.c: Fix indentation.
	* symfile.c: Fix indentation.
	* symfile.h: Fix indentation.
	* symmisc.c: Fix indentation.
	* symtab.c: Fix indentation.
	* symtab.h: Fix indentation.
	* target-float.c: Fix indentation.
	* target.c: Fix indentation.
	* target.h: Fix indentation.
	* tic6x-tdep.c: Fix indentation.
	* tilegx-linux-tdep.c: Fix indentation.
	* tilegx-tdep.c: Fix indentation.
	* top.c: Fix indentation.
	* tracefile-tfile.c: Fix indentation.
	* tracepoint.c: Fix indentation.
	* tui/tui-disasm.c: Fix indentation.
	* tui/tui-io.c: Fix indentation.
	* tui/tui-regs.c: Fix indentation.
	* tui/tui-stack.c: Fix indentation.
	* tui/tui-win.c: Fix indentation.
	* tui/tui-winsource.c: Fix indentation.
	* tui/tui.c: Fix indentation.
	* typeprint.c: Fix indentation.
	* ui-out.h: Fix indentation.
	* unittests/copy_bitwise-selftests.c: Fix indentation.
	* unittests/memory-map-selftests.c: Fix indentation.
	* utils.c: Fix indentation.
	* v850-tdep.c: Fix indentation.
	* valarith.c: Fix indentation.
	* valops.c: Fix indentation.
	* valprint.c: Fix indentation.
	* valprint.h: Fix indentation.
	* value.c: Fix indentation.
	* value.h: Fix indentation.
	* varobj.c: Fix indentation.
	* vax-tdep.c: Fix indentation.
	* windows-nat.c: Fix indentation.
	* windows-tdep.c: Fix indentation.
	* xcoffread.c: Fix indentation.
	* xml-syscall.c: Fix indentation.
	* xml-tdesc.c: Fix indentation.
	* xstormy16-tdep.c: Fix indentation.
	* xtensa-config.c: Fix indentation.
	* xtensa-linux-nat.c: Fix indentation.
	* xtensa-linux-tdep.c: Fix indentation.
	* xtensa-tdep.c: Fix indentation.

gdbserver/ChangeLog:

	* ax.cc: Fix indentation.
	* dll.cc: Fix indentation.
	* inferiors.h: Fix indentation.
	* linux-low.cc: Fix indentation.
	* linux-nios2-low.cc: Fix indentation.
	* linux-ppc-ipa.cc: Fix indentation.
	* linux-ppc-low.cc: Fix indentation.
	* linux-x86-low.cc: Fix indentation.
	* linux-xtensa-low.cc: Fix indentation.
	* regcache.cc: Fix indentation.
	* server.cc: Fix indentation.
	* tracepoint.cc: Fix indentation.

gdbsupport/ChangeLog:

	* common-exceptions.h: Fix indentation.
	* event-loop.cc: Fix indentation.
	* fileio.cc: Fix indentation.
	* filestuff.cc: Fix indentation.
	* gdb-dlfcn.cc: Fix indentation.
	* gdb_string_view.h: Fix indentation.
	* job-control.cc: Fix indentation.
	* signals.cc: Fix indentation.

Change-Id: I4bad7ae6be0fbe14168b8ebafb98ffe14964a695
 2020-11-02 10:28:45 -05:00
Simon Marchi
4dbe16c811 gdbserver: fix overlap in sprintf argument and buffer 
While trying to build on Cygwin (gcc 10.2.0), I got:

      CXX    server.o
    /home/Baube/src/binutils-gdb/gdbserver/server.cc: In function 'void handle_general_set(char*)':
    /home/Baube/src/binutils-gdb/gdbserver/server.cc:832:12: error: 'sprintf' argument 3 overlaps destination object 'own_buf' [-Werror=restrict]
      832 |    sprintf (own_buf, "E.Unknown thread-events mode requested: %s\n",
          |    ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      833 |      mode);
          |      ~~~~~
    /home/Baube/src/binutils-gdb/gdbserver/server.cc:553:27: note: destination object referenced by 'restrict'-qualified argument 1 was declared here
      553 | handle_general_set (char *own_buf)
          |                     ~~~~~~^~~~~~~

There is indeed a problem: mode points somewhere into own_buf.  And by
the time mode gets formatted as a %s, whatever it points to has been
overwritten.  I hacked gdbserver to coerce it into that error path, and
this is the resulting message:

    (gdb) p own_buf
    $1 = 0x629000000200 "E.Unknown thread-events mode requested: ad-events mode requested: 00;10:9020fdf7ff7f0000;thread:p49388.49388;core:e;\n"

Fix it by formatting the error string in an std::string first.

gdbserver/ChangeLog:

	* server.cc (handle_general_set): Don't use sprintf with
	argument overlapping buffer.

Change-Id: I4fdf05c0117f63739413dd67ddae7bd6ee414824
 2020-10-21 10:42:26 -04:00
Tom Tromey
60b746622b Remove some dead code from handle_search_memory 
handle_search_memory had some code after a call to error.  This code
is dead, and this patch removes it.

gdbserver/ChangeLog
2020-10-07  Tom Tromey  <tromey@adacore.com>

	* server.cc (handle_search_memory): Remove dead code.
 2020-10-07 12:07:56 -06:00
Tom Tromey
55b10d89a4 Use simple_search_memory in gdbserver 
This replaces gdbserver's memory-searching function with
simple_search_memory.

gdbserver/ChangeLog
2020-10-07  Tom Tromey  <tromey@adacore.com>

	* server.cc (handle_search_memory_1): Remove.
	(handle_search_memory): Use simple_search_memory.
 2020-10-07 12:07:56 -06:00
Simon Marchi
6b01403b25 gdb: add debug prints in event loop 
Add debug printouts about event loop-related events:

 - When a file descriptor handler gets invoked
 - When an async event/signal handler gets invoked

gdb/ChangeLog:

	* async-event.c (invoke_async_signal_handlers): Add debug
	print.
	(check_async_event_handlers): Likewise.
	* event-top.c (show_debug_event_loop): New function.
	(_initialize_event_top): Register "set debug event-loop"
	setting.

gdbserver/ChangeLog:

	* server.cc (handle_monitor_command): Handle "set
	debug-event-loop".
	(captured_main): Handle "--debug-event-loop".
	(monitor_show_help): Mention new setting.
	(gdbserver_usage): Mention new flag.

gdbsupport/ChangeLog:

	* event-loop.h (debug_event_loop): New variable declaration.
	(event_loop_debug_printf_1): New function declaration.
	(event_loop_debug_printf): New macro.
	* event-loop.cc (debug_event_loop): New variable.
	(handle_file_event): Add debug print.
	(event_loop_debug_printf_1): New function.

Change-Id: If78ed3a69179881368e7895b42940ce13b6a1a05
 2020-10-02 14:47:42 -04:00
Simon Marchi
ece5bc8ac3 gdb: allow specifying multiple filters when running selftests 
I found myself wanting to run a few specific selftests while developing.
I thought it would be nice to be able to provide multiple test names
when running `maintenant selftests`.  The arguments to that command is
currently interpreted as a single filter (not split by spaces), it now
becomes a list a filters, split by spaces.  A test is executed when it
matches at least one filter.

Here's an example of the result in GDB:

    (gdb) maintenance selftest xml
    Running selftest xml_escape_text.
    Running selftest xml_escape_text_append.
    Ran 2 unit tests, 0 failed
    (gdb) maintenance selftest xml unord
    Running selftest unordered_remove.
    Running selftest xml_escape_text.
    Running selftest xml_escape_text_append.
    Ran 3 unit tests, 0 failed
    (gdb) maintenance selftest xml unord foobar
    Running selftest unordered_remove.
    Running selftest xml_escape_text.
    Running selftest xml_escape_text_append.
    Ran 3 unit tests, 0 failed

Since the selftest machinery is also shared with gdbserver, I also
adapted gdbserver.  It accepts a `--selftest` switch, which accepts an
optional filter argument.  I made it so you can now pass `--selftest`
multiple time to add filters.

It's not so useful right now though: there's only a single selftest
right now in GDB and it's for an architecture I can't compile.  So I
tested by adding dummy tests, here's an example of the result:

    $ ./gdbserver --selftest=foo
    Running selftest foo.
    foo
    Running selftest foobar.
    foobar
    Ran 2 unit tests, 0 failed
    $ ./gdbserver --selftest=foo --selftest=bar
    Running selftest bar.
    bar
    Running selftest foo.
    foo
    Running selftest foobar.
    foobar
    Ran 3 unit tests, 0 failed

gdbsupport/ChangeLog:

	* selftest.h (run_tests): Change parameter to array_view.
	* selftest.c (run_tests): Change parameter to array_view and use
	it.

gdb/ChangeLog:

	* maint.c (maintenance_selftest): Split args and pass array_view
	to run_tests.

gdbserver/ChangeLog:

	* server.cc (captured_main): Accept multiple `--selftest=`
	options.  Pass all `--selftest=` arguments to run_tests.

Change-Id: I422bd49f08ea8095ae174c5d66a2dd502a59613a
 2020-08-13 07:55:48 -04:00
Pedro Alves
028a46039a gdbserver: handle running threads in qXfer:threads:read 
On some systems, the gdb.multi/multi-target.exp testcase occasionally
fails like so:

 Running src/gdb/testsuite/gdb.multi/multi-target.exp ...
 FAIL: gdb.multi/multi-target.exp: info-inferiors: multi_process=on: inferior 1: info connections
 FAIL: gdb.multi/multi-target.exp: info-inferiors: multi_process=on: inferior 1: info inferiors
 FAIL: gdb.multi/multi-target.exp: info-inferiors: multi_process=on: inferior 2: info connections
 FAIL: gdb.multi/multi-target.exp: info-inferiors: multi_process=on: inferior 2: info inferiors
 FAIL: gdb.multi/multi-target.exp: info-inferiors: multi_process=on: inferior 3: inferior 3
 ... many more cascading fails.

The problem starts when the testcase runs an inferior against GDBserver:

 (gdb) run
 Starting program: build/gdb/testsuite/outputs/gdb.multi/multi-target/multi-target
 Reading /lib64/ld-linux-x86-64.so.2 from remote target...
 warning: File transfers from remote targets can be slow. Use "set sysroot" to access files locally instead.
 Reading /lib64/ld-linux-x86-64.so.2 from remote target...
 Reading /lib64/ld-2.31.so from remote target...
 Reading /lib64/.debug/ld-2.31.so from remote target...
 Reading /usr/lib/debug//lib64/ld-2.31.so from remote target...
 Reading /usr/lib/debug/lib64//ld-2.31.so from remote target...
 Reading target:/usr/lib/debug/lib64//ld-2.31.so from remote target...
 Reading /lib/x86_64-linux-gnu/libpthread.so.0 from remote target...
 Reading /lib/x86_64-linux-gnu/libc.so.6 from remote target...
 Reading /lib/x86_64-linux-gnu/libc-2.31.so from remote target...
 Reading /lib/x86_64-linux-gnu/.debug/libc-2.31.so from remote target...
 Reading /usr/lib/debug//lib/x86_64-linux-gnu/libc-2.31.so from remote target...
 Reading /usr/lib/debug//lib/x86_64-linux-gnu/libc-2.31.so from remote target...
 Remote connection closed
 ...

Note the "Remote connection closed" message.  That means GDBserver
exited abruptly.

I traced it down to the fact that GDB fetches the thread list from
GDBserver while the main thread of the process is still running.  On
my main system where I wrote the testcase, I have not observed the
failure because it is slow enough that the thread stops before
GDBserver fetches the thread list in the problem scenario which I'll
describe below.

With some --remote-debug logging from GDBserver side, we see the last
packets before the connection closes:

 ...
 getpkt ("vCont;c");  [no ack sent]
 putpkt ("$OK#9a"); [noack mode]
 getpkt ("Tp10f9a.10f9a");  [no ack sent]
 putpkt ("$OK#9a"); [noack mode]
 getpkt ("Hgp0.0");  [no ack sent]
 putpkt ("$OK#9a"); [noack mode]
 getpkt ("qXfer:threads:read::0,1000");  [no ack sent]

Note the vCont;c , which sets the program running, and then a
qXfer:threads:read packet at the end.

The problem happens when the thread list refresh (qXfer:threads:read)
is sent just while the main thread is running and it still hasn't
initialized its libpthread id internally.  In that state, the main
thread's lwp will remain with the thread_known flag clear.  See in
find_one_thread:

  /* If the new thread ID is zero, a final thread ID will be available
     later.  Do not enable thread debugging yet.  */
  if (ti.ti_tid == 0)
    return 0;

Now, back in server.cc, to handle the qXfer:threads:read, we reach
handle_qxfer_threads -> handle_qxfer_threads_proper, and the latter
then calls handle_qxfer_threads_worker for each known thread.  In
handle_qxfer_threads_worker, we call target_thread_handle.  This ends
up in thread_db_thread_handle, here:

  if (!lwp->thread_known && !find_one_thread (thread->id))
    return false;

Since the thread ID isn't known yet, we call find_one_thread.  This
calls into libthread_db.so, which accesses memory.  Because the
current thread is running, that fails and we throw an error, here:

  /* Get information about this thread.  */
  err = thread_db->td_ta_map_lwp2thr_p (thread_db->thread_agent, lwpid, &th);
  if (err != TD_OK)
    error ("Cannot get thread handle for LWP %d: %s",
	   lwpid, thread_db_err_str (err));

The current design is that whenever GDB-facing packets/requests need
to accesses memory, server.cc is supposed to prepare the target for
the access.  See gdb_read_memory / gdb_write_memory.  This preparation
means pausing threads if in non-stop mode (someday we could lift this
requirement, but we will still need to pause to access registers or do
other related ptrace accesses like PTRACE_GET_THREAD_AREA).  Note that
the multi-target.exp testcase forces "maint set target-non-stop on".

So the fix here is to prepare the target to access memory when
handling qXfer:threads:read too.

gdbserver/ChangeLog:

	* inferiors.cc (switch_to_process): New, moved here from
	thread-db.cc, and made extern.
	* inferiors.h (switch_to_process): Declare.
	* server.cc: Include "gdbsupport/scoped_restore.h".
	(handle_qxfer_threads_proper): Now returns bool.  Prepare to
	access memory around target calls.
	(handle_qxfer_threads): Handle errors.
	* thread-db.cc (switch_to_process): Moved to inferiors.cc.
 2020-07-22 12:32:53 +01:00
Simon Marchi
b315b67d7a gdbserver: fix memory leak when handling qsupported packet 
When building gdbserver with AddressSanitizer, I get this annoying
little leak when gdbserver exits:

==307817==ERROR: LeakSanitizer: detected memory leaks

    Direct leak of 14 byte(s) in 1 object(s) allocated from:
        #0 0x7f7fd4256459 in __interceptor_malloc /build/gcc/src/gcc/libsanitizer/asan/asan_malloc_linux.cpp:145
        #1 0x563bef981b80 in xmalloc /home/simark/src/binutils-gdb/gdbserver/../gdb/alloc.c:60
        #2 0x563befb53301 in xstrdup /home/simark/src/binutils-gdb/libiberty/xstrdup.c:34
        #3 0x563bef9d742b in handle_query /home/simark/src/binutils-gdb/gdbserver/server.cc:2286
        #4 0x563bef9ed0b7 in process_serial_event /home/simark/src/binutils-gdb/gdbserver/server.cc:4061
        #5 0x563bef9f1d9e in handle_serial_event(int, void*) /home/simark/src/binutils-gdb/gdbserver/server.cc:4402
        #6 0x563befb0ec65 in handle_file_event /home/simark/src/binutils-gdb/gdbsupport/event-loop.cc:548
        #7 0x563befb0f49f in gdb_wait_for_event /home/simark/src/binutils-gdb/gdbsupport/event-loop.cc:673
        #8 0x563befb0d4a1 in gdb_do_one_event() /home/simark/src/binutils-gdb/gdbsupport/event-loop.cc:215
        #9 0x563bef9e721a in start_event_loop /home/simark/src/binutils-gdb/gdbserver/server.cc:3484
        #10 0x563bef9eb90a in captured_main /home/simark/src/binutils-gdb/gdbserver/server.cc:3875
        #11 0x563bef9ec2c7 in main /home/simark/src/binutils-gdb/gdbserver/server.cc:3961
        #12 0x7f7fd3330001 in __libc_start_main (/usr/lib/libc.so.6+0x27001)

    SUMMARY: AddressSanitizer: 14 byte(s) leaked in 1 allocation(s).

This is due to the handling of unknown qsupported features in
handle_query.  The `qsupported` vector is built, containing all the
feature names received from GDB.  As we iterate on them, when we
encounter unknown ones, we move them at the beginning of the vector, in
preparation of passing this vector of unknown features down to the
target (which may know about them).

When moving these unknown features to other slots in the vector, we
overwrite other pointers without freeing them, which therefore leak.

An easy fix would be to add a `free` when doing the move.  However, I
think this is a good opportunity to sprinkle a bit of automatic memory
management in this code.

So, use a vector of std::string which owns all the entries.  And use a
separate vector (that doesn't own the entries) for the unknown ones,
which is then passed to target_process_qsupported.

Given that the `c_str` method of std::string returns a `const char *`,
it follows that process_stratum_target::process_qsupported must accept a
`const char **` instead of a `char **`.  And while at it, change the
pointer + size paramters to use an array_view instead.

gdbserver/ChangeLog:

	* server.cc (handle_query): Use std::vector of
	std::string for `qsupported` vector.  Use separate
	vector for unknowns.
	* target.h (class process_stratum_target) <process_qsupported>:
	Change parameters to array_view of const char *.
	(target_process_qsupported): Remove `count` parameter.
	* target.cc (process_stratum_target::process_qsupported): Change
	parameters to array_view of const char *.
	* linux-x86-low.cc (class x86_target) <process_qsupported>:
	Likewise.

Change-Id: I97f133825faa6d7abbf83a58504eb0ba77462812
 2020-07-13 22:27:01 -04:00
Michael Weghorn
bea571ebd7 Use construct_inferior_arguments which handles special chars 
Use the construct_inferior_arguments function instead of
stringify_argv to construct a string from the program
arguments in those places where that one is then passed
to fork_inferior (linux-low, lyn-low), since
construct_inferior_arguments properly takes care of
special characters, while stringify_argv does not.
Using construct_inferior_arguments seems "natural", since its
documentation also mentions that it "does the
same shell processing as fork_inferior".

Since construct_inferior_args has been extended to do
proper quoting for Windows shells in commit
5d60742e2d
("Fix quoting of special characters for the MinGW build.",
2012-06-12), use it for the Windows case as well.
(I could not test that case myself, though.)

Adapt handling of empty args in function 'handle_v_run'
in gdbserver/server.cc to just insert an empty string
for an empty arg, since that one is now properly handled
in 'construct_inferior_arguments' already (and inserting
a "''" string in 'handle_v_run' would otherwise
cause that one to be treated as a string literally
containing two quote characters, which
'construct_inferior_args' would preserve by adding
extra escaping).

This makes gdbserver properly handle program args containing special
characters (like spaces), e.g. (example from PR25893)

  $ gdbserver localhost:50505 myprogram "hello world"

now properly handles "hello world" as a single arg, not two separate
ones ("hello", "world").

gdbserver/ChangeLog:

	PR gdbserver/25893
	* linux-low.cc (linux_process_target::create_inferior),
	lynx-low.cc (lynx_process_target::create_inferior),
	win32-low.cc (win32_process_target::create_inferior): Use
	construct_inferior_arguments instead of stringify_argv
	to get string representation which properly escapes
	special characters.
	* server.cc (handle_v_run): Just pass empty program arg
	as such, since any further processing is now handled via
	construct_inferior_arguments.

Change-Id: Ibf963fcd51415c948840fb463289516b3479b0c3
 2020-05-25 11:40:00 -04:00
Michael Weghorn
b69ca137ac gdbserver: Don't add extra NULL to program args 
The vector holding the program args is passed as a parameter
to target_create_inferior, which then passes it to
stringify_argv for all platforms, where any NULL entry in
the vector is ignored, so there seems to be no reason
to actually add one after all.

(Since the intention is to replace uses of stringify_argv with
construct_inferior_arguments in a follow-up commit and that
function doesn't currently handle such NULL arguments, it
would otherwise have to be extended.)

gdbserver/ChangeLog:

	* server.cc (captured_main), (handle_v_run): No longer
	insert extra NULL element to args vector.

Change-Id: Ia2ef6d36814a6b11ce8b0d6e3b33248a7945e825
 2020-05-25 11:39:11 -04:00
Hannes Domani
51ac8e2265 Fix search of large memory area in gdbserver 
If the search area is bigger than SEARCH_CHUNK_SIZE (16000), then you get
an error in gdbserver:
gdb: (gdb) find /w 0x3c43f0,+20000,0x04030201
gdb: Pattern not found.
gdbserver: Unable to access 3997 bytes of target memory at 0x3c8273, halting search.

The return value of any additional gdb_read_memory calls were compared with the
wrong value, this fixes it.

gdbserver/ChangeLog:

2020-04-22  Hannes Domani  <ssbssa@yahoo.de>

	* server.cc (handle_search_memory_1): Fix gdb_read_memory return value
	comparison.
 2020-04-22 21:23:39 +02:00
Tom Tromey
55d7aec85e Switch gdbserver to gdbsupport event loop 
This changes gdbserver to use the gdbserver event loop, removing the
ancient fork.

gdbserver/ChangeLog
2020-04-13  Tom Tromey  <tom@tromey.com>

	* server.h (handle_serial_event, handle_target_event): Update.
	* server.c: Don't call initialize_event_loop.
	(keep_processing_events): New global.
	(handle_serial_event): Return void.  Set keep_processing_events.
	(handle_target_event): Return void.
	(start_event_loop): Move from event-loop.c.  Rewrite.
	* remote-utils.c (handle_accept_event): Return void.
	(reset_readchar): Use delete_timer.
	(process_remaining): Return void.
	(reschedule): Use create_timer.
	* event-loop.h: Remove.
	* event-loop.cc: Remove.
	* Makefile.in (OBS): Use gdbsupport/event-loop.o, not event-loop.o.
 2020-04-13 14:10:04 -06:00
Tom Tromey
e487f9949a Implement event-loop glue for gdbserver 
event-loop.c requires the client to provide some functions.  This
patch implements these functions for gdbserver.

gdbserver/ChangeLog
2020-04-13  Tom Tromey  <tom@tromey.com>

	* server.c (invoke_async_signal_handlers)
	(check_async_event_handlers, flush_streams, gdb_select): New
	functions.
 2020-04-13 14:10:04 -06:00
Andrew Burgess
442131c1be gdbserver: Add mechanism to prevent sending T stop packets 
There is a developer only feature in gdbserver that provides a
command line option --disable-packet that prevents some packets from
being sent, which is used to increase test coverage within GDB.

This commit extends this mechanism to prevent GDBserver from sending
the T stop reply packets, instead limiting GDBserver to only send the
S stop reply packets.

The S stop reply packet is part of the older target control mechanism,
which has design flaws that were worked around with the introduction
of the newer target control mechanism, which uses the T stop reply
packet.

Limiting GDBserver to use S stop packets instead of T stop packets
will, inevitably, mean that GDBserver doesn't function correctly in
many cases involving multiple threads, however, I don't think this is
too important, this is a developer only feature, intended to allow us
to test GDB.

A new test that makes use of this feature will be added in the next
commit.

gdbserver/ChangeLog:

	* remote-utils.cc (prepare_resume_reply): Add ability to convert T
	reply into an S reply.
	* server.cc (disable_packet_T): New global.
	(captured_main): Set new global when appropriate.
	* server.h (disable_packet_T): Declare.
 2020-03-02 15:06:35 +00:00
Tankut Baris Aktemur
52405d85ec gdbserver: finish turning the target ops vector into a class 
Now that 'process_stratum_target' has a single field left, namely 'pt'
of type 'process_target', and that all the requests to a
'process_stratum_target' are forwarded to 'pt', meld the
'process_target' class into 'process_stratum_target'.

This essentially means

1. All the references of the form 'the_target->pt' become 'the_target'.

2. All the uses of the name 'process_target' become
   'process_stratum_target'.

3. The platform-specific target op vectors (e.g. linux_target_ops) are
   removed and instances of their "process target" classes are used
   instead.

gdbserver/ChangeLog:
2020-02-20  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	* target.h (struct process_stratum_target): Remove.
	(class process_target): Rename to ...
	(class process_stratum_target): ... this.
	* linux-low.h (class linux_process_target): Derive from
	'process_stratum_target'.
	* linux-low.cc (linux_target_ops): Remove.
	(initialize_low): Set the_target to the singleton instance of
	linux_process_target.
	* lynx-low.h (class lynx_process_target): Derive from
	'process_stratum_target'.
	* lynx-low.cc (lynx_target_ops): Remove.
	(initialize_low): Set the_target to the singleton instance of
	lynx_process_target.
	* nto-low.h (class nto_process_target): Derive from
	'process_stratum_target'.
	* nto-low.cc (nto_target_ops): Remove.
	(initialize_low): Set the_target to the singleton instance of
	nto_process_target.
	* win32-low.h (class win32_process_target): Derive from
	'process_stratum_target'.
	* win32-low.cc (win32_target_ops): Remove.
	(initialize_low): Set the_target to the singleton instance of
	win32_process_target.

	Replace 'the_target->pt' with 'the_target' in the uses below.

	* hostio.cc (hostio_error)
	(handle_setfs)
	(handle_open)
	(handle_unlink)
	(handle_readlink)
	* linux-aarch32-low.cc (arm_breakpoint_at)
	* linux-aarch64-low.cc (aarch64_breakpoint_at)
	* linux-arm-low.cc (arm_sigreturn_next_pc)
	(arm_get_hwcap)
	(arm_get_syscall_trapinfo)
	* linux-cris-low.cc (cris_breakpoint_at)
	* linux-crisv32-low.cc (cris_breakpoint_at)
	* linux-low.cc (handle_extended_wait)
	(linux_wait_1)
	(linux_read_memory)
	(linux_process_target::breakpoint_kind_from_pc)
	(linux_get_auxv)
	* linux-m32r-low.cc (m32r_breakpoint_at)
	* linux-mips-low.cc (mips_breakpoint_at)
	* linux-nios2-low.cc (nios2_breakpoint_at)
	* linux-ppc-low.cc (ppc_breakpoint_at)
	* linux-s390-low.cc (s390_get_hwcap)
	* linux-sh-low.cc (sh_breakpoint_at)
	* linux-sparc-low.cc (sparc_fill_gregset_to_stack)
	(sparc_store_gregset_from_stack)
	(sparc_breakpoint_at)
	* linux-tic6x-low.cc (tic6x_breakpoint_at)
	* linux-tile-low.cc (tile_breakpoint_at)
	* linux-x86-low.cc (x86_breakpoint_at)
	* linux-xtensa-low.cc (xtensa_breakpoint_at)
	* mem-break.cc (bp_size)
	(bp_opcode)
	(insert_memory_breakpoint)
	(set_raw_breakpoint_at)
	(delete_raw_breakpoint)
	(z_type_supported)
	(uninsert_raw_breakpoint)
	(reinsert_raw_breakpoint)
	(validate_inserted_breakpoint)
	* regcache.cc (regcache_read_pc)
	(regcache_write_pc)
	* remote-utils.cc (putpkt_binary_1)
	(input_interrupt)
	(getpkt)
	(prepare_resume_reply)
	* server.cc (handle_general_set)
	(handle_detach)
	(handle_qxfer_auxv)
	(handle_qxfer_exec_file)
	(handle_qxfer_libraries_svr4)
	(handle_qxfer_osdata)
	(handle_qxfer_siginfo)
	(handle_qxfer_fdpic)
	(handle_query)
	(resume)
	(handle_v_requests)
	(queue_stop_reply_callback)
	(captured_main)
	* target.cc (prepare_to_access_memory)
	(done_accessing_memory)
	(read_inferior_memory)
	(target_write_memory)
	(target_stop_and_wait)
	(target_wait)
	(target_mourn_inferior)
	(target_continue_no_signal)
	(target_continue)
	(target_supports_multi_process)
	(kill_inferior)
	* target.h
	(target_create_inferior)
	(target_post_create_inferior)
	(myattach)
	(target_supports_fork_events)
	(target_supports_vfork_events)
	(target_supports_exec_events)
	(target_handle_new_gdb_connection)
	(detach_inferior)
	(mythread_alive)
	(fetch_inferior_registers)
	(store_inferior_registers)
	(join_inferior)
	(target_supports_non_stop)
	(target_async)
	(target_process_qsupported)
	(target_supports_catch_syscall)
	(target_get_ipa_tdesc_idx)
	(target_supports_tracepoints)
	(target_supports_fast_tracepoints)
	(target_get_min_fast_tracepoint_insn_len)
	(target_thread_stopped)
	(target_pause_all)
	(target_unpause_all)
	(target_stabilize_threads)
	(target_install_fast_tracepoint_jump_pad)
	(target_emit_ops)
	(target_supports_disable_randomization)
	(target_supports_agent)
	(target_enable_btrace)
	(target_disable_btrace)
	(target_read_btrace)
	(target_read_btrace_conf)
	(target_supports_range_stepping)
	(target_supports_stopped_by_sw_breakpoint)
	(target_stopped_by_sw_breakpoint)
	(target_supports_stopped_by_hw_breakpoint)
	(target_supports_hardware_single_step)
	(target_stopped_by_hw_breakpoint)
	(target_breakpoint_kind_from_pc)
	(target_breakpoint_kind_from_current_state)
	(target_supports_software_single_step)
	(target_core_of_thread)
	(target_thread_name)
	(target_thread_handle)
	* win32-low.cc (do_initial_child_stuff)

	Rename target op default definitions listed below.

	* target.cc (process_target::post_create_inferior): Rename as ...
	(process_stratum_target::post_create_inferior): ... this.
	(process_target::prepare_to_access_memory): Rename as ...
	(process_stratum_target::prepare_to_access_memory): ... this.
	(process_target::done_accessing_memory): Rename as ...
	(process_stratum_target::done_accessing_memory): ... this.
	(process_target::look_up_symbols): Rename as ...
	(process_stratum_target::look_up_symbols): ... this.
	(process_target::supports_read_auxv): Rename as ...
	(process_stratum_target::supports_read_auxv): ... this.
	(process_target::read_auxv): Rename as ...
	(process_stratum_target::read_auxv): ... this.
	(process_target::supports_z_point_type): Rename as ...
	(process_stratum_target::supports_z_point_type): ... this.
	(process_target::insert_point): Rename as ...
	(process_stratum_target::insert_point): ... this.
	(process_target::remove_point): Rename as ...
	(process_stratum_target::remove_point): ... this.
	(process_target::stopped_by_sw_breakpoint): Rename as ...
	(process_stratum_target::stopped_by_sw_breakpoint): ... this.
	(process_target::supports_stopped_by_sw_breakpoint): Rename as ...
	(process_stratum_target::supports_stopped_by_sw_breakpoint): ... this.
	(process_target::stopped_by_hw_breakpoint): Rename as ...
	(process_stratum_target::stopped_by_hw_breakpoint): ... this.
	(process_target::supports_stopped_by_hw_breakpoint): Rename as ...
	(process_stratum_target::supports_stopped_by_hw_breakpoint): ... this.
	(process_target::supports_hardware_single_step): Rename as ...
	(process_stratum_target::supports_hardware_single_step): ... this.
	(process_target::stopped_by_watchpoint): Rename as ...
	(process_stratum_target::stopped_by_watchpoint): ... this.
	(process_target::stopped_data_address): Rename as ...
	(process_stratum_target::stopped_data_address): ... this.
	(process_target::supports_read_offsets): Rename as ...
	(process_stratum_target::supports_read_offsets): ... this.
	(process_target::read_offsets): Rename as ...
	(process_stratum_target::read_offsets): ... this.
	(process_target::supports_get_tls_address): Rename as ...
	(process_stratum_target::supports_get_tls_address): ... this.
	(process_target::get_tls_address): Rename as ...
	(process_stratum_target::get_tls_address): ... this.
	(process_target::hostio_last_error): Rename as ...
	(process_stratum_target::hostio_last_error): ... this.
	(process_target::supports_qxfer_osdata): Rename as ...
	(process_stratum_target::supports_qxfer_osdata): ... this.
	(process_target::qxfer_osdata): Rename as ...
	(process_stratum_target::qxfer_osdata): ... this.
	(process_target::supports_qxfer_siginfo): Rename as ...
	(process_stratum_target::supports_qxfer_siginfo): ... this.
	(process_target::qxfer_siginfo): Rename as ...
	(process_stratum_target::qxfer_siginfo): ... this.
	(process_target::supports_non_stop): Rename as ...
	(process_stratum_target::supports_non_stop): ... this.
	(process_target::async): Rename as ...
	(process_stratum_target::async): ... this.
	(process_target::start_non_stop): Rename as ...
	(process_stratum_target::start_non_stop): ... this.
	(process_target::supports_multi_process): Rename as ...
	(process_stratum_target::supports_multi_process): ... this.
	(process_target::supports_fork_events): Rename as ...
	(process_stratum_target::supports_fork_events): ... this.
	(process_target::supports_vfork_events): Rename as ...
	(process_stratum_target::supports_vfork_events): ... this.
	(process_target::supports_exec_events): Rename as ...
	(process_stratum_target::supports_exec_events): ... this.
	(process_target::handle_new_gdb_connection): Rename as ...
	(process_stratum_target::handle_new_gdb_connection): ... this.
	(process_target::handle_monitor_command): Rename as ...
	(process_stratum_target::handle_monitor_command): ... this.
	(process_target::core_of_thread): Rename as ...
	(process_stratum_target::core_of_thread): ... this.
	(process_target::supports_read_loadmap): Rename as ...
	(process_stratum_target::supports_read_loadmap): ... this.
	(process_target::read_loadmap): Rename as ...
	(process_stratum_target::read_loadmap): ... this.
	(process_target::process_qsupported): Rename as ...
	(process_stratum_target::process_qsupported): ... this.
	(process_target::supports_tracepoints): Rename as ...
	(process_stratum_target::supports_tracepoints): ... this.
	(process_target::read_pc): Rename as ...
	(process_stratum_target::read_pc): ... this.
	(process_target::write_pc): Rename as ...
	(process_stratum_target::write_pc): ... this.
	(process_target::supports_thread_stopped): Rename as ...
	(process_stratum_target::supports_thread_stopped): ... this.
	(process_target::thread_stopped): Rename as ...
	(process_stratum_target::thread_stopped): ... this.
	(process_target::supports_get_tib_address): Rename as ...
	(process_stratum_target::supports_get_tib_address): ... this.
	(process_target::get_tib_address): Rename as ...
	(process_stratum_target::get_tib_address): ... this.
	(process_target::pause_all): Rename as ...
	(process_stratum_target::pause_all): ... this.
	(process_target::unpause_all): Rename as ...
	(process_stratum_target::unpause_all): ... this.
	(process_target::stabilize_threads): Rename as ...
	(process_stratum_target::stabilize_threads): ... this.
	(process_target::supports_fast_tracepoints): Rename as ...
	(process_stratum_target::supports_fast_tracepoints): ... this.
	(process_target::get_min_fast_tracepoint_insn_len): Rename as ...
	(process_stratum_target::get_min_fast_tracepoint_insn_len): ... this.
	(process_target::emit_ops): Rename as ...
	(process_stratum_target::emit_ops): ... this.
	(process_target::supports_disable_randomization): Rename as ...
	(process_stratum_target::supports_disable_randomization): ... this.
	(process_target::supports_qxfer_libraries_svr4): Rename as ...
	(process_stratum_target::supports_qxfer_libraries_svr4): ... this.
	(process_target::qxfer_libraries_svr4): Rename as ...
	(process_stratum_target::qxfer_libraries_svr4): ... this.
	(process_target::supports_agent): Rename as ...
	(process_stratum_target::supports_agent): ... this.
	(process_target::enable_btrace): Rename as ...
	(process_stratum_target::enable_btrace): ... this.
	(process_target::disable_btrace): Rename as ...
	(process_stratum_target::disable_btrace): ... this.
	(process_target::read_btrace): Rename as ...
	(process_stratum_target::read_btrace): ... this.
	(process_target::read_btrace_conf): Rename as ...
	(process_stratum_target::read_btrace_conf): ... this.
	(process_target::supports_range_stepping): Rename as ...
	(process_stratum_target::supports_range_stepping): ... this.
	(process_target::supports_pid_to_exec_file): Rename as ...
	(process_stratum_target::supports_pid_to_exec_file): ... this.
	(process_target::pid_to_exec_file): Rename as ...
	(process_stratum_target::pid_to_exec_file): ... this.
	(process_target::supports_multifs): Rename as ...
	(process_stratum_target::supports_multifs): ... this.
	(process_target::multifs_open): Rename as ...
	(process_stratum_target::multifs_open): ... this.
	(process_target::multifs_unlink): Rename as ...
	(process_stratum_target::multifs_unlink): ... this.
	(process_target::multifs_readlink): Rename as ...
	(process_stratum_target::multifs_readlink): ... this.
	(process_target::breakpoint_kind_from_pc): Rename as ...
	(process_stratum_target::breakpoint_kind_from_pc): ... this.
	(process_target::breakpoint_kind_from_current_state): Rename as ...
	(process_stratum_target::breakpoint_kind_from_current_state): ... this.
	(process_target::thread_name): Rename as ...
	(process_stratum_target::thread_name): ... this.
	(process_target::thread_handle): Rename as ...
	(process_stratum_target::thread_handle): ... this.
	(process_target::supports_software_single_step): Rename as ...
	(process_stratum_target::supports_software_single_step): ... this.
	(process_target::supports_catch_syscall): Rename as ...
	(process_stratum_target::supports_catch_syscall): ... this.
	(process_target::get_ipa_tdesc_idx): Rename as ...
	(process_stratum_target::get_ipa_tdesc_idx): ... this.
 2020-02-20 17:35:20 +01:00
Tankut Baris Aktemur
8247b8236b gdbserver: turn target op 'pid_to_exec_file' into a method 
gdbserver/ChangeLog:
2020-02-20  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	Turn process_stratum_target's pid_to_exec_file op into a method
	of process_target.

	* target.h (struct process_stratum_target): Remove the target op.
	(class process_target): Add the target op.  Also add
	'supports_pid_to_exec_file'.
	* target.cc (process_target::pid_to_exec_file): Define.
	(process_target::supports_pid_to_exec_file): Define.

	Update the derived classes and callers below.

	* server.cc (handle_qxfer_exec_file): Update.
	(handle_query): Update.
	* linux-low.cc (linux_target_ops): Update.
	(linux_process_target::supports_pid_to_exec_file): Define.
	(linux_process_target::pid_to_exec_file): Define.
	* linux-low.h (class linux_process_target): Update.
	* lynx-low.cc (lynx_target_ops): Update.
	* nto-low.cc (nto_target_ops): Update.
	* win32-low.cc (win32_target_ops): Update.
 2020-02-20 17:35:17 +01:00
Tankut Baris Aktemur
974387bb25 gdbserver: turn target op 'qxfer_libraries_svr4' into a method 
gdbserver/ChangeLog:
2020-02-20  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	Turn process_stratum_target's qxfer_libraries_svr4 op into a
	method of process_target.

	* target.h (struct process_stratum_target): Remove the target op.
	(class process_target): Add the target op.  Also add
	'supports_qxfer_libraries_svr4'.
	* target.cc (process_target::qxfer_libraries_svr4): Define.
	(process_target::supports_qxfer_libraries_svr4): Define.

	Update the derived classes and callers below.

	* server.cc (handle_qxfer_libraries_svr4): Update.
	(handle_query): Update.
	* linux-low.cc (linux_target_ops): Update.
	(linux_process_target::supports_qxfer_libraries_svr4): Define.
	(linux_qxfer_libraries_svr4): Turn into ...
	(linux_process_target::qxfer_libraries_svr4): ... this.
	* linux-low.h (class linux_process_target): Update.
	* lynx-low.cc (lynx_target_ops): Update.
	* nto-low.cc (nto_target_ops): Update.
	* win32-low.cc (win32_target_ops): Update.
 2020-02-20 17:35:16 +01:00
Tankut Baris Aktemur
5c9eb2f2b5 gdbserver: turn target op 'stabilize_threads' into a method 
gdbserver/ChangeLog:
2020-02-20  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	Turn process_stratum_target's stabilize_threads op into a
	method of process_target.

	* target.h (struct process_stratum_target): Remove the target op.
	(class process_target): Add the target op.
	(target_stabilize_threads): Update the macro.
	* target.cc (process_target::stabilize_threads): Define.

	Update the derived classes and callers below.

	* server.cc (handle_status): Update.
	* tracepoint.cc (cmd_qtdp): Update.
	(cmd_qtstart): Update.
	* linux-low.cc (linux_target_ops): Update.
	(linux_stabilize_threads): Turn into ...
	(linux_process_target::stabilize_threads): ... this.
	(linux_wait_1): Update.
	* linux-low.h (class linux_process_target): Update.
	* lynx-low.cc (lynx_target_ops): Update.
	* nto-low.cc (nto_target_ops): Update.
	* win32-low.cc (win32_target_ops): Update.
 2020-02-20 17:35:15 +01:00
Tankut Baris Aktemur
29e8dc09ff gdbserver: turn target ops 'pause_all' and 'unpause_all' into methods 
gdbserver/ChangeLog:
2020-02-20  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	Turn process_stratum_target's pause_all and unpause_all ops
	into methods of process_target.

	* target.h (struct process_stratum_target): Remove the target ops.
	(class process_target): Add the target ops.
	(pause_all): Update the macro and rename to...
	(target_pause_all): ... this.
	(unpause_all): Update the macro and rename to...
	(target_unpause_all): ... this.
	* target.cc (process_target::pause_all): Define.
	(process_target::unpause_all): Define.

	Update the derived classes and callers below.

	* server.cc (handle_status): Update.
	* tracepoint.cc (clear_installed_tracepoints): Update.
	(cmd_qtdp): Update.
	(cmd_qtstart): Update.
	(stop_tracing): Update.
	(cmd_qtstatus): Update.
	(upload_fast_traceframes): Update.
	(run_inferior_command): Update.
	* linux-low.cc (linux_target_ops): Update.
	(linux_pause_all): Turn into ...
	(linux_process_target::pause_all): ... this.
	(linux_unpause_all): Turn into ...
	(linux_process_target::unpause_all): ... this.
	(linux_process_target::prepare_to_access_memory): Update.
	(linux_process_target::done_accessing_memory): Update.
	* linux-low.h (class linux_process_target): Update.
	* lynx-low.cc (lynx_target_ops): Update.
	* nto-low.cc (nto_target_ops): Update.
	* win32-low.cc (win32_target_ops): Update.
 2020-02-20 17:35:14 +01:00
Tankut Baris Aktemur
4e2e869cb3 gdbserver: turn target op 'get_tib_address' into a method 
gdbserver/ChangeLog:
2020-02-20  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	Turn process_stratum_target's get_tib_address op into a method of
	process_target.

	* target.h (struct process_stratum_target): Remove the target op.
	(class process_target): Add the target op.  Also add
	'supports_get_tib_address'.
	* target.cc (process_target::get_tib_address): Define.
	(process_target::supports_get_tib_address): Define.

	Update the derived classes and callers below.

	* server.cc (handle_query): Update.
	* linux-low.cc (win32_target_ops): Update.
	* lynx-low.cc (lynx_target_ops): Update.
	* nto-low.cc (nto_target_ops): Update.
	* win32-low.cc (win32_target_ops): Update.
	(win32_process_target::supports_get_tib_address): Define.
	(win32_get_tib_address): Turn into ...
	(win32_process_target::get_tib_address): ... this.
	* win32-low.h (class win32_process_target): Update.
 2020-02-20 17:35:14 +01:00
Tankut Baris Aktemur
68119632a0 gdbserver: turn target op 'thread_stopped' into a method 
gdbserver/ChangeLog:
2020-02-20  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	Turn process_stratum_target's thread_stopped op into a method of
	process_target.

	* target.h (struct process_stratum_target): Remove the target op.
	(class process_target): Add the target op.  Also add
	'supports_thread_stopped'.
	(target_thread_stopped): Update the macro.
	* target.cc (process_target::thread_stopped): Define.
	(process_target::supports_thread_stopped): Define.
	(prepare_to_access_memory): Update.

	Update the derived classes and callers below.

	* server.cc (queue_stop_reply_callback): Update.
	* linux-low.cc (linux_target_ops): Update.
	(linux_process_target::supports_thread_stopped): Define.
	(linux_thread_stopped): Turn into ...
	(linux_process_target::thread_stopped): ... this.
	* linux-low.h (class linux_process_target): Update.
	* lynx-low.cc (lynx_target_ops): Update.
	* nto-low.cc (nto_target_ops): Update.
	* win32-low.cc (win32_target_ops): Update.
 2020-02-20 17:35:14 +01:00
Tankut Baris Aktemur
9da41fdae0 gdbserver: turn target op 'read_loadmap' into a method 
gdbserver/ChangeLog:
2020-02-20  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	Turn process_stratum_target's read_loadmap op into a method of
	process_target.

	* target.h (struct process_stratum_target): Remove the target op.
	(class process_target): Add the target op.  Also add
	'supports_read_loadmap'.
	* target.cc (process_target::read_loadmap): Define.
	(process_target::supports_read_loadmap): Define.

	Update the derived classes and callers below.

	* server.cc (handle_qxfer_fdpic): Update.
	(handle_query): Update.
	* linux-low.cc (linux_target_ops): Update.
	(linux_process_target::supports_read_loadmap): Define.
	(linux_read_loadmap): Turn into ...
	(linux_process_target::read_loadmap): ... this.
	* linux-low.h (class linux_process_target): Update.
	* lynx-low.cc (lynx_target_ops): Update.
	* nto-low.cc (nto_target_ops): Update.
	* win32-low.cc (win32_target_ops): Update.
 2020-02-20 17:35:12 +01:00
Tankut Baris Aktemur
55cf302157 gdbserver: turn target op 'handle_monitor_command' into a method 
gdbserver/ChangeLog:
2020-02-20  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	Turn process_stratum_target's handle_monitor_command op into a
	method of process_target.

	* target.h (struct process_stratum_target): Remove the target op.
	(class process_target): Add the target op.
	(target_handle_monitor_command): Update the macro.
	* target.cc (process_target::handle_monitor_command): Define.

	Update the derived classes and callers below.

	* server.cc (handle_query): Update.
	* linux-low.cc (linux_target_ops): Update.
	(linux_process_target::handle_monitor_command): Define.
	* linux-low.h (class linux_process_target): Update.
	* lynx-low.cc (lynx_target_ops): Update.
	* nto-low.cc (nto_target_ops): Update.
	* win32-low.cc (win32_target_ops): Update.
 2020-02-20 17:35:12 +01:00
Tankut Baris Aktemur
0dc587d425 gdbserver: turn non-stop and async target ops into methods 
gdbserver/ChangeLog:
2020-02-20  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	Turn process_stratum_target's supports_non_stop, async, and
	start_non_stop ops into methods of process_target.

	* target.h (struct process_stratum_target): Remove the target ops.
	(class process_target): Add the target ops.
	(target_supports_non_stop): Update the macro.
	(target_async): Update the macro.
	(start_non_stop): Remove declaration.
	* target.cc (process_target::supports_non_stop): Define.
	(process_target::async): Define.
	(process_target::start_non_stop): Define.
	(start_non_stop): Remove.

	Update the derived classes and callers below.

	* server.cc (handle_qxfer_siginfo): Update.
	(handle_query): Update.
	* linux-low.cc (linux_target_ops): Update.
	(linux_supports_non_stop): Turn into ...
	(linux_process_target::supports_non_stop): ... this.
	(linux_async): Turn into ...
	(linux_process_target::async): ... this.
	(linux_start_non_stop): Turn into ...
	(linux_process_target::start_non_stop): ... this.
	* linux-low.h (class linux_process_target): Update.
	* lynx-low.cc (lynx_target_ops): Update.
	* nto-low.cc (nto_target_ops): Update.
	(nto_supports_non_stop): Remove; rely on the default behavior
	instead.
	* win32-low.cc (win32_target_ops): Update.
 2020-02-20 17:35:10 +01:00
Tankut Baris Aktemur
d7abedf7e7 gdbserver: turn target op 'qxfer_siginfo' into a method 
gdbserver/ChangeLog:
2020-02-20  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	Turn process_stratum_target's qxfer_siginfo op into a method of
	process_target.

	* target.h (struct process_stratum_target): Remove the target op.
	(class process_target): Add the target op.  Also add
	'supports_qxfer_siginfo'.
	* target.cc (process_target::qxfer_siginfo): Define.
	(process_target::supports_qxfer_siginfo): Define.

	Update the derived classes and callers below.

	* server.cc (handle_qxfer_siginfo): Update.
	(handle_query): Update.
	* linux-low.cc (linux_target_ops): Update.
	(linux_process_target::supports_qxfer_siginfo): Define.
	(linux_xfer_siginfo): Turn into ...
	(linux_process_target::qxfer_siginfo): ... this.
	* linux-low.h (class linux_process_target): Update.
	* lynx-low.cc (lynx_target_ops): Update.
	* nto-low.cc (nto_target_ops): Update.
	* win32-low.cc (win32_target_ops): Update.
 2020-02-20 17:35:10 +01:00
Tankut Baris Aktemur
2d0795ee38 gdbserver: turn target op 'qxfer_osdata' into a method 
gdbserver/ChangeLog:
2020-02-20  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	Turn process_stratum_target's qxfer_osdata op into a method of
	process_target.

	* target.h (struct process_stratum_target): Remove the target op.
	(class process_target): Add the target op.  Also add
	'supports_qxfer_osdata'.
	* target.cc (process_target::qxfer_osdata): Define.
	(process_target::supports_qxfer_osdata): Define.

	Update the derived classes and callers below.

	* server.cc (handle_qxfer_osdata): Update.
	(handle_query): Update.
	* linux-low.cc (linux_target_ops): Update.
	(linux_process_target::supports_qxfer_osdata): Define.
	(linux_qxfer_osdata): Turn into ...
	(linux_process_target::qxfer_osdata): ... this.
	* linux-low.h (class linux_process_target): Update.
	* lynx-low.cc (lynx_target_ops): Update.
	* nto-low.cc (nto_target_ops): Update.
	* win32-low.cc (win32_target_ops): Update.
 2020-02-20 17:35:10 +01:00
Tankut Baris Aktemur
6e3fd7e948 gdbserver: turn target op 'get_tls_address' into a method 
gdbserver/ChangeLog:
2020-02-20  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	Turn process_stratum_target's get_tls_address op into a method of
	process_target.

	* target.h (struct process_stratum_target): Remove the target op.
	(class process_target): Add the target op.  Also add
	'supports_get_tls_address'.
	* target.cc (process_target::get_tls_address): Define.
	(process_target::supports_get_tls_address): Define.

	Update the derived classes and callers below.

	* server.cc (handle_query): Update.
	* linux-low.cc (linux_target_ops): Update.
	(linux_process_target::supports_get_tls_address): Define.
	(linux_process_target::get_tls_address): Define.
	* linux-low.h (class linux_process_target): Update.
	* lynx-low.cc (lynx_target_ops): Update.
	* nto-low.cc (nto_target_ops): Update.
	* win32-low.cc (win32_target_ops): Update.
 2020-02-20 17:35:09 +01:00
Tankut Baris Aktemur
5203ae1e87 gdbserver: turn target op 'read_offsets' into a method 
gdbserver/ChangeLog:
2020-02-20  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	Turn process_stratum_target's read_offsets op into a method of
	process_target.

	* target.h (struct process_stratum_target): Remove the target op.
	(class process_target): Add the target op.  Also add
	'supports_read_offsets'.
	* target.cc (process_target::read_offsets): Define.
	(process_target::supports_read_offsets): Define.

	Update the derived classes and callers below.

	* server.cc (handle_query): Update.
	* linux-low.cc (SUPPORTS_READ_OFFSETS): New #define directive.
	(linux_target_ops): Update.
	(linux_process_target::supports_read_offsets): Define.
	(linux_read_offsets): Turn into ...
	(linux_process_target::read_offsets): ... this.
	* linux-low.h (class linux_process_target): Update.
	* lynx-low.cc (lynx_target_ops): Update.
	* nto-low.cc (nto_target_ops): Update.
	* win32-low.cc (win32_target_ops): Update.
 2020-02-20 17:35:09 +01:00
Tankut Baris Aktemur
eac215cc61 gdbserver: turn target op 'read_auxv' into a method 
gdbserver/ChangeLog:
2020-02-20  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	Turn process_stratum_target's read_auxv op into a method of
	process_target.

	* target.h (class process_stratum_target): Remove the target op.
	(struct process_target): Add the target op.  Also add
	'supports_read_auxv'.
	* target.cc (process_target::read_auxv): Define.
	(process_target::supports_read_auxv): Define.

	Update the derived classes and callers below.

	* server.cc (handle_qxfer_auxv): Update.
	(handle_query): Update.
	* linux-low.cc (linux_target_ops): Update.
	(linux_process_target::supports_read_auxv): Define.
	(linux_read_auxv): Turn into ...
	(linux_process_target::read_auxv): ... this.
	* linux-low.h (class linux_process_target): Update.
	* lynx-low.cc (lynx_target_ops): Update.
	* nto-low.cc (nto_target_ops): Update.
	(nto_process_target::supports_read_auxv): Define.
	(nto_read_auxv): Turn into ...
	(nto_process_target::read_auxv): ... this.
	* nto-low.h (class nto_process_target): Update.
	* win32-low.cc (win32_target_ops): Update.
 2020-02-20 17:35:06 +01:00
Tankut Baris Aktemur
eb497a2a77 gdbserver: turn target op 'request_interrupt' into a method 
gdbserver/ChangeLog:
2020-02-20  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	Turn process_stratum_target's request_interrupt op into a method of
	process_target.

	* target.h (struct process_stratum_target): Remove the target op.
	(class process_target): Add the target op.

	Update the derived classes and callers below.

	* remote-utils.cc (putpkt_binary_1): Update.
	(input_interrupt): Update.
	(getpkt): Update.
	* server.cc (handle_v_requests): Update.
	* linux-low.cc (linux_target_ops): Update.
	(linux_request_interrupt): Turn into ...
	(linux_process_target::request_interrupt): ... this.
	* linux-low.h (class linux_process_target): Update.
	* lynx-low.cc (lynx_target_ops): Update.
	(lynx_request_interrupt): Turn into ...
	(lynx_process_target::request_interrupt): ... this.
	* lynx-low.h (class lynx_process_target): Update.
	* nto-low.cc (nto_target_ops): Update.
	(nto_request_interrupt): Turn into ...
	(nto_process_target::request_interrupt): ... this.
	* nto-low.h (class nto_process_target): Update.
	* win32-low.cc (win32_target_ops): Update.
	(win32_request_interrupt): Turn into ...
	(win32_process_target::request_interrupt): ... this.
	* win32-low.h (class win32_process_target): Update.
 2020-02-20 17:35:06 +01:00
Tankut Baris Aktemur
2a31c7aa00 gdbserver: turn target op 'look_up_symbols' into a method 
gdbserver/ChangeLog:
2020-02-20  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	Turn process_stratum_target's look_up_symbols op into a method of
	process_target.

	* target.h (struct process_stratum_target): Remove the target op.
	(class process_target): Add the target op.
	* target.cc (process_target::look_up_symbols): Define.

	Update the derived classes and callers below.

	* server.cc (handle_query): Update.
	* linux-low.cc (linux_target_ops): Update.
	(linux_look_up_symbols): Turn into ...
	(linux_process_target::look_up_symbols): ... this.
	* linux-low.h (class linux_process_target): Update.
	* lynx-low.cc (lynx_target_ops): Update.
	* nto-low.cc (nto_target_ops): Update.
	* win32-low.cc (win32_target_ops): Update.
 2020-02-20 17:35:06 +01:00
Tankut Baris Aktemur
0e4d7e35fb gdbserver: turn target op 'resume' into a method 
gdbserver/ChangeLog:
2020-02-20  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	Turn process_stratum_target's resume op into a method of
	process_target.

	* target.h (struct process_stratum_target): Remove the target op.
	(class process_target): Add the target op.

	Update the derived classes and callers below.

	* server.cc (resume): Update.
	* target.cc (target_stop_and_wait): Update.
	(target_continue_no_signal): Update.
	(target_continue): Update.
	* linux-low.cc (linux_target_ops): Update.
	(linux_resume): Turn into ...
	(linux_process_target::resume): ... this.
	* linux-low.h (class linux_process_target): Update.
	* lynx-low.cc (lynx_target_ops): Update.
	(lynx_resume): Turn into ...
	(lynx_process_target::resume): ... this.
	* lynx-low.h (class lynx_process_target): Update.
	* nto-low.cc (nto_target_ops): Update.
	(nto_resume): Turn into ...
	(nto_process_target::resume): ... this.
	* nto-low.h (class nto_process_target): Update.
	* win32-low.cc (win32_target_ops): Update.
	(win32_resume): Turn into ...
	(win32_process_target::resume): ... this.
	(win32_process_target::detach): Update.
	(do_initial_child_stuff): Update.
	* win32-low.h (class win32_process_target): Update.
 2020-02-20 17:35:04 +01:00
Tankut Baris Aktemur
15295543f9 gdbserver: turn target op 'create_inferior' into a method 
gdbserver/ChangeLog:
2020-02-20  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	Turn process_stratum_target's create_inferior op into a method of
	process_target.

	* target.h (struct process_stratum_target): Remove the target op.
	(class process_target): Add the target op.
	(create_inferior): Rename the macro to ...
	(target_create_inferior): ... this.

	Update the derived classes and callers below.

	* server.cc (handle_v_run): Update.
	(captured_main): Update.
	(process_serial_event): Update.
	* linux-low.cc (linux_target_ops): Update.
	(linux_create_inferior): Turn into ...
	(linux_process_target::create_inferior): ... this.
	* linux-low.h (class linux_process_target): Update.
	* lynx-low.cc (lynx_target_ops): Update.
	(lynx_create_inferior): Turn into ...
	(lynx_process_target::create_inferior): ... this.
	* lynx-low.h (class lynx_process_target): Update.
	* nto-low.cc (nto_target_ops): Update.
	(nto_create_inferior): Turn into ...
	(nto_process_target::create_inferior): ... this.
	* nto-low.h (class nto_process_target): Update.
	* win32-low.cc (win32_target_ops): Update.
	(win32_create_inferior): Turn into ...
	(win32_process_target::create_inferior): ... this.
	* win32-low.h (class win32_process_target): Update.
 2020-02-20 17:35:01 +01:00
Simon Marchi
feacfcacaa gdbserver: rename source files to .cc 
For the same reasons outlined in the previous patch, this patch renames
gdbserver source files to .cc.

I have moved the "-x c++" switch to only those rules that require it.

gdbserver/ChangeLog:

	* Makefile.in: Rename source files from .c to .cc.
	* %.c: Rename to %.cc.
	* configure.ac: Rename server.c to server.cc.
	* configure: Re-generate.
 2020-02-13 16:27:51 -05:00