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207 Commits

Author SHA1 Message Date
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
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
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
db20ebdfae gdb: give names to async event/signal handlers 
Assign names to async event/signal handlers.  They will be used in debug
messages when file handlers are invoked.

Unlike in the previous patch, the names are not copied in the structure,
since we don't need to (all names are string literals for the moment).

gdb/ChangeLog:

	* async-event.h (create_async_signal_handler): Add name
	parameter.
	(create_async_event_handler): Likewise.
	* async-event.c (struct async_signal_handler) <name>: New field.
	(struct async_event_handler) <name>: New field.
	(create_async_signal_handler): Assign name.
	(create_async_event_handler): Assign name.
	* event-top.c (async_init_signals): Pass name when creating
	handler.
	* infrun.c (_initialize_infrun): Likewise.
	* record-btrace.c (record_btrace_push_target): Likewise.
	* record-full.c (record_full_open): Likewise.
	* remote-notif.c (remote_notif_state_allocate): Likewise.
	* remote.c (remote_target::open_1): Likewise.
	* tui/tui-win.c (tui_initialize_win): Likewise.

Change-Id: Icd9d9f775542ae5fc2cd148c12f481e7885936d5
 2020-10-02 14:47:06 -04:00
Simon Marchi
2554f6f564 gdb: give names to event loop file handlers 
Assign names to event loop file handlers.  They will be used in debug
messages when file handlers are invoked.

In GDB, each UI used to get its own unique number, until commit
cbe256847e ("Remove ui::num").  Re-introduce this field, and use it to
make a unique name for the handler.

I'm not too sure what goes on in ser-base.c, all I know is that it's
what is used when debugging remotely.  I've just named the main handler
"serial".  It would be good to have unique names there too.  For instance
when debugging with two different remote connections, we'd ideally want
the handlers to have unique names.  I didn't do it in this patch though.

gdb/ChangeLog:

	* async-event.c (initialize_async_signal_handlers): Pass name to
	add_file_handler
	* event-top.c (ui_register_input_event_handler): Likewise.
	* linux-nat.c (linux_nat_target::async): Likewise.
	* run-on-main-thread.c (_initialize_run_on_main_thread):
	Likewise
	* ser-base.c (reschedule): Likewise.
	(ser_base_async): Likewise.
	* tui/tui-io.c: Likewise.
	* top.h (struct ui) <num>: New field.
	* top.c (highest_ui_num): New variable.
	(ui::ui): Initialize num.

gdbserver/ChangeLog:

	* linux-low.cc (linux_process_target::async): Pass name to
	add_file_handler.
	* remote-utils.cc (handle_accept_event): Likewise.
	(remote_open): Likewise.

gdbsupport/ChangeLog:

	* event-loop.h (add_file_handler): Add "name" parameter.
	* event-loop.cc (struct file_handler) <name>: New field.
	(create_file_handler): Add "name" parameter, assign it to file
	handler.
	(add_file_handler): Add "name" parameter.

Change-Id: I9f1545f73888ebb6778eb653a618ca44d105f92c
 2020-10-02 14:46:56 -04:00
Tom Tromey
400b5eca00 Move event-loop.[ch] to gdbsupport/ 
This moves event-loop.[ch] to gdbsupport/ and updates the uses in gdb.

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

	* run-on-main-thread.c: Update include.
	* unittests/main-thread-selftests.c: Update include.
	* tui/tui-win.c: Update include.
	* tui/tui-io.c: Update include.
	* tui/tui-interp.c: Update include.
	* tui/tui-hooks.c: Update include.
	* top.h: Update include.
	* top.c: Update include.
	* ser-base.c: Update include.
	* remote.c: Update include.
	* remote-notif.c: Update include.
	* remote-fileio.c: Update include.
	* record-full.c: Update include.
	* record-btrace.c: Update include.
	* python/python.c: Update include.
	* posix-hdep.c: Update include.
	* mingw-hdep.c: Update include.
	* mi/mi-main.c: Update include.
	* mi/mi-interp.c: Update include.
	* main.c: Update include.
	* linux-nat.c: Update include.
	* interps.c: Update include.
	* infrun.c: Update include.
	* inf-loop.c: Update include.
	* event-top.c: Update include.
	* event-loop.c: Move to ../gdbsupport/.
	* event-loop.h: Move to ../gdbsupport/.
	* async-event.h: Update include.
	* Makefile.in (COMMON_SFILES, HFILES_NO_SRCDIR): Update.

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

	* event-loop.h: Move from ../gdb/.
	* event-loop.cc: Move from ../gdb/.
 2020-04-13 14:10:04 -06:00
Tom Tromey
93b54c8ed3 Introduce async-event.[ch] 
This patch splits out some gdb-specific code from event-loop, into new
files async-event.[ch].  Strictly speaking this code could perhaps be
put into gdbsupport/, but because gdbserver does not currently use it,
it seemed better, for size reasons, to split it out.

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

	* tui/tui-win.c: Include async-event.h.
	* remote.c: Include async-event.h.
	* remote-notif.c: Include async-event.h.
	* record-full.c: Include async-event.h.
	* record-btrace.c: Include async-event.h.
	* infrun.c: Include async-event.h.
	* event-top.c: Include async-event.h.
	* event-loop.h: Move some declarations to async-event.h.
	* event-loop.c: Don't include ser-event.h or top.h.  Move some
	code to async-event.c.
	* async-event.h: New file.
	* async-event.c: New file.
	* Makefile.in (COMMON_SFILES): Add async-event.c.
	(HFILES_NO_SRCDIR): Add async-event.h.
 2020-04-13 14:10:04 -06:00
Tom Tromey
06cc9596e8 Move gdb_select.h to gdbsupport/ 
This moves gdb_select.h to gdbsupport/, so it can be used by other
code there.

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

	* gdb_select.h: Move to ../gdbsupport/.
	* event-loop.c: Update include path.
	* top.c: Update include path.
	* ser-base.c: Update include path.
	* ui-file.c: Update include path.
	* ser-tcp.c: Update include path.
	* guile/scm-ports.c: Update include path.
	* posix-hdep.c: Update include path.
	* ser-unix.c: Update include path.
	* gdb_usleep.c: Update include path.
	* mingw-hdep.c: Update include path.
	* inflow.c: Update include path.
	* infrun.c: Update include path.
	* event-top.c: Update include path.

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

	* gdb_select.h: Move from ../gdb/.
 2020-04-13 14:10:03 -06:00
Iain Buclaw
faa17681cc Make gdb_flush also flush the wrap buffer 
This changes gdb_flush to also flush the internal wrap buffer.  A few
places needed to continue using the previous approach, so this also
introduces ui_file_flush for those.

2020-02-05  Iain Buclaw  <ibuclaw@gdcproject.org>

        * gdb/event-loop.c (gdb_wait_for_event): Update.
        * gdb/printcmd.c (printf_command): Update.
        * gdb/remote-fileio.c (remote_fileio_func_write): Update.
        * gdb/remote-sim.c (gdb_os_flush_stdout): Update.
        (gdb_os_flush_stderr): Update.
        * gdb/remote.c (remote_console_output): Update.
        * gdb/ui-file.c (gdb_flush): Rename to...
        (ui_file_flush): ...this.
        (stderr_file::write): Update.
        (stderr_file::puts): Update.
        * gdb/ui-file.h (gdb_flush): Rename to...
        (ui_file_flush): ...this.
        * gdb/utils.c (gdb_flush): Add function.
        * gdb/utils.h (gdb_flush): Add declaration.

Change-Id: I7ca143d30f03dc39f218f6e880eb9bca9e15af39
 2020-02-07 14:06:02 -07:00
Pedro Alves
5b6d1e4fa4 Multi-target support 
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.
 2020-01-10 20:06:08 +00:00
Joel Brobecker
b811d2c292 Update copyright year range in all GDB files. 
gdb/ChangeLog:

        Update copyright year range in all GDB files.
 2020-01-01 10:20:53 +04:00
Tom Tromey
036003a671 Silence ARI for valid calls to abort 
There are a handful of spots in gdb that validly call abort.  This
patch adds the appropriate ARI marker to these lines, to silence the
ARI report.  This also removes the "fix" call for "abort" from
gdb_ari.sh; it was incorrect and now is not needed.

gdb/ChangeLog
2019-12-13  Tom Tromey  <tromey@adacore.com>

	* contrib/ari/gdb_ari.sh: Remove "fix" call for abort.
	* utils.c (abort_with_message, dump_core, internal_vproblem): Add
	ARI marker to abort.
	* event-top.c (handle_sigsegv): Add ARI marker to abort.

Change-Id: I09ce6aa5010bbe4e5bb73ffdb727481be39d34d6
 2019-12-13 15:15:31 -07:00
Tom Tromey
3b3978bca2 Introduce thread-safe way to handle SIGSEGV 
The gdb demangler installs a SIGSEGV handler in order to protect gdb
from demangler bugs.  However, this is not thread-safe, as signal
handlers are global to the process.

This patch changes gdb to always install a global SIGSEGV handler, and
then lets threads indicate their interest in handling the signal by
setting a thread-local variable.

This patch then arranges for the demangler code to use this; being
sure to arrange for calls to warning and the like to be done on the
main thread.

One thing I wondered while writing this patch is if there are any
systems that do not have "sigaction".  If gdb could assume this, it
would simplify this code.

gdb/ChangeLog
2019-11-26  Tom Tromey  <tom@tromey.com>

	* event-top.h (thread_local_segv_handler): Declare.
	* event-top.c (thread_local_segv_handler): New global.
	(install_handle_sigsegv, handle_sigsegv): New functions.
	(async_init_signals): Install SIGSEGV handler.
	* cp-support.c (gdb_demangle_jmp_buf): Change type.  Now
	thread-local.
	(report_failed_demangle): New function.
	(gdb_demangle): Make core_dump_allowed atomic.  Remove signal
	handler-setting code, instead use segv_handler.  Run warning code
	on main thread.

Change-Id: Ic832bbb033b64744e4b44f14b41db7e4168ce427
 2019-11-26 14:02:57 -07:00
Tom Tromey
21987b9c06 Add RAII class for blocking gdb signals 
This adds configury support and an RAII class that can be used to
temporarily block signals that are used by gdb.  (This class is not
used in this patch, but it split out for easier review.)

The idea of this patch is that these signals should only be delivered
to the main thread.  So, when creating a background thread, they are
temporarily blocked; the blocked state is inherited by the new thread.

The sigprocmask man page says:

    The use of sigprocmask() is unspecified in a multithreaded
    process; see pthread_sigmask(3).

This patch changes gdb to use pthread_sigmask when appropriate, by
introducing a convenience define.

I've updated gdbserver as well, because I had to touch gdbsupport, and
because the threading patches will make it link against the thread
library.

I chose not to touch the NTO code, because I don't know anything about
that platform and because I cannot test it.

Finally, this modifies an existing spot in the Guile layer to use the
new facility.

gdb/ChangeLog
2019-11-26  Tom Tromey  <tom@tromey.com>

	* gdbsupport/signals-state-save-restore.c (original_signal_mask):
	Remove comment.
	(save_original_signals_state, restore_original_signals_state): Use
	gdb_sigmask.
	* linux-nat.c (block_child_signals, restore_child_signals_mask)
	(_initialize_linux_nat): Use gdb_sigmask.
	* guile/guile.c (_initialize_guile): Use block_signals.
	* Makefile.in (HFILES_NO_SRCDIR): Add gdb-sigmask.h.
	* gdbsupport/gdb-sigmask.h: New file.
	* event-top.c (async_sigtstp_handler): Use gdb_sigmask.
	* cp-support.c (gdb_demangle): Use gdb_sigmask.
	* gdbsupport/common.m4 (GDB_AC_COMMON): Check for
	pthread_sigmask.
	* configure, config.in: Rebuild.
	* gdbsupport/block-signals.h: New file.

gdb/gdbserver/ChangeLog
2019-11-26  Tom Tromey  <tom@tromey.com>

	* remote-utils.c (block_unblock_async_io): Use gdb_sigmask.
	* linux-low.c (linux_wait_for_event_filtered, linux_async): Use
	gdb_sigmask.
	* configure, config.in: Rebuild.

Change-Id: If3f37dc57dd859c226e9e4d79458a0514746e8c6
 2019-11-26 14:02:57 -07:00
Tom de Vries
405feb71d4 [gdb] Fix typos in comments 
Fix typos in comments.  NFC.

Tested on x86_64-linux.

gdb/ChangeLog:

2019-10-17  Tom de Vries  <tdevries@suse.de>

	* arm-nbsd-nat.c: Fix typos in comments.
	* arm-tdep.c: Same.
	* darwin-nat-info.c: Same.
	* dwarf2read.c: Same.
	* elfread.c: Same.
	* event-top.c: Same.
	* findvar.c: Same.
	* gdbtypes.c: Same.
	* hppa-tdep.c: Same.
	* i386-tdep.c: Same.
	* jit.c: Same.
	* main.c: Same.
	* mdebugread.c: Same.
	* moxie-tdep.c: Same.
	* nto-procfs.c: Same.
	* osabi.c: Same.
	* ppc-linux-tdep.c: Same.
	* remote.c: Same.
	* riscv-tdep.c: Same.
	* s390-tdep.c: Same.
	* sh-tdep.c: Same.
	* sparc-linux-tdep.c: Same.
	* sparc-nat.c: Same.
	* stack.c: Same.
	* target-descriptions.c: Same.
	* top.c: Same.
	* varobj.c: Same.

Change-Id: I6047967abd2d51c9000dea15184d19f4e952c3ff
 2019-10-17 18:06:36 +02:00
Christian Biesinger
491144b5e2 Change boolean options to bool instead of int 
This is for add_setshow_boolean_cmd as well as the gdb::option interface.

gdb/ChangeLog:

2019-09-17  Christian Biesinger  <cbiesinger@google.com>

	* ada-lang.c (ada_ignore_descriptive_types_p): Change to bool.
	(print_signatures): Likewise.
	(trust_pad_over_xvs): Likewise.
	* arch/aarch64-insn.c (aarch64_debug): Likewise.
	* arch/aarch64-insn.h (aarch64_debug): Likewise.
	* arm-linux-nat.c (arm_apcs_32): Likewise.
	* arm-linux-tdep.c (arm_apcs_32): Likewise.
	* arm-nbsd-nat.c (arm_apcs_32): Likewise.
	* arm-tdep.c (arm_debug): Likewise.
	(arm_apcs_32): Likewise.
	* auto-load.c (debug_auto_load): Likewise.
	(auto_load_gdb_scripts): Likewise.
	(global_auto_load): Likewise.
	(auto_load_local_gdbinit): Likewise.
	(auto_load_local_gdbinit_loaded): Likewise.
	* auto-load.h (global_auto_load): Likewise.
	(auto_load_local_gdbinit): Likewise.
	(auto_load_local_gdbinit_loaded): Likewise.
	* breakpoint.c (disconnected_dprintf): Likewise.
	(breakpoint_proceeded): Likewise.
	(automatic_hardware_breakpoints): Likewise.
	(always_inserted_mode): Likewise.
	(target_exact_watchpoints): Likewise.
	(_initialize_breakpoint): Update.
	* breakpoint.h (target_exact_watchpoints): Change to bool.
	* btrace.c (maint_btrace_pt_skip_pad): Likewise.
	* cli/cli-cmds.c (trace_commands): Likewise.
	* cli/cli-cmds.h (trace_commands): Likewise.
	* cli/cli-decode.c (add_setshow_boolean_cmd): Change int* argument
	to bool*.
	* cli/cli-logging.c (logging_overwrite): Change to bool.
	(logging_redirect): Likewise.
	(debug_redirect): Likewise.
	* cli/cli-option.h (option_def) <boolean>: Change return type to bool*.
	(struct boolean_option_def) <get_var_address_cb_>: Change return type
	to bool.
	<boolean_option_def>: Update.
	(struct flag_option_def): Change default type of Context to bool
	from int.
	<flag_option_def>: Change return type of var_address_cb_ to bool*.
	* cli/cli-setshow.c (do_set_command): Cast to bool* instead of int*.
	(get_setshow_command_value_string): Likewise.
	* cli/cli-style.c (cli_styling): Change to bool.
	(source_styling): Likewise.
	* cli/cli-style.h (source_styling): Likewise.
	(cli_styling): Likewise.
	* cli/cli-utils.h (struct qcs_flags) <quiet, cont, silent>: Change
	to bool.
	* command.h (var_types): Update comment.
	(add_setshow_boolean_cmd): Change int* var argument to bool*.
	* compile/compile-cplus-types.c (debug_compile_cplus_types): Change to
	bool.
	(debug_compile_cplus_scopes): Likewise.
	* compile/compile-internal.h (compile_debug): Likewise.
	* compile/compile.c (compile_debug): Likewise.
	(struct compile_options) <raw>: Likewise.
	* cp-support.c (catch_demangler_crashes): Likewise.
	* cris-tdep.c (usr_cmd_cris_version_valid): Likewise.
	(usr_cmd_cris_dwarf2_cfi): Likewise.
	* csky-tdep.c (csky_debug): Likewise.
	* darwin-nat.c (enable_mach_exceptions): Likewise.
	* dcache.c (dcache_enabled_p): Likewise.
	* defs.h (info_verbose): Likewise.
	* demangle.c (demangle): Likewise.
	(asm_demangle): Likewise.
	* dwarf-index-cache.c (debug_index_cache): Likewise.
	* dwarf2-frame.c (dwarf2_frame_unwinders_enabled_p): Likewise.
	* dwarf2-frame.h (dwarf2_frame_unwinders_enabled_p): Likewise.
	* dwarf2read.c (check_physname): Likewise.
	(use_deprecated_index_sections): Likewise.
	(dwarf_always_disassemble): Likewise.
	* eval.c (overload_resolution): Likewise.
	* event-top.c (set_editing_cmd_var): Likewise.
	(exec_done_display_p): Likewise.
	* event-top.h (set_editing_cmd_var): Likewise.
	(exec_done_display_p): Likewise.
	* exec.c (write_files): Likewise.
	* fbsd-nat.c (debug_fbsd_lwp): Likewise
	(debug_fbsd_nat): Likewise.
	* frame.h (struct frame_print_options) <print_raw_frame_arguments>:
	Likewise.
	(struct set_backtrace_options) <backtrace_past_main>: Likewise.
	<backtrace_past_entry> Likewise.
	* gdb-demangle.h (demangle): Likewise.
	(asm_demangle): Likewise.
	* gdb_bfd.c (bfd_sharing): Likewise.
	* gdbcore.h (write_files): Likewise.
	* gdbsupport/common-debug.c (show_debug_regs): Likewise.
	* gdbsupport/common-debug.h (show_debug_regs): Likewise.
	* gdbthread.h (print_thread_events): Likewise.
	* gdbtypes.c (opaque_type_resolution): Likewise.
	(strict_type_checking): Likewise.
	* gnu-nat.c (gnu_debug_flag): Likewise.
	* guile/scm-auto-load.c (auto_load_guile_scripts): Likewise.
	* guile/scm-param.c (pascm_variable): Add boolval.
	(add_setshow_generic): Update.
	(pascm_param_value): Update.
	(pascm_set_param_value_x): Update.
	* hppa-tdep.c (hppa_debug): Change to bool..
	* infcall.c (may_call_functions_p): Likewise.
	(coerce_float_to_double_p): Likewise.
	(unwind_on_signal_p): Likewise.
	(unwind_on_terminating_exception_p): Likewise.
	* infcmd.c (startup_with_shell): Likewise.
	* inferior.c (print_inferior_events): Likewise.
	* inferior.h (startup_with_shell): Likewise.
	(print_inferior_events): Likewise.
	* infrun.c (step_stop_if_no_debug): Likewise.
	(detach_fork): Likewise.
	(debug_displaced): Likewise.
	(disable_randomization): Likewise.
	(non_stop): Likewise.
	(non_stop_1): Likewise.
	(observer_mode): Likewise.
	(observer_mode_1): Likewise.
	(set_observer_mode): Update.
	(sched_multi): Change to bool.
	* infrun.h (debug_displaced): Likewise.
	(sched_multi): Likewise.
	(step_stop_if_no_debug): Likewise.
	(non_stop): Likewise.
	(disable_randomization): Likewise.
	* linux-tdep.c (use_coredump_filter): Likewise.
	(dump_excluded_mappings): Likewise.
	* linux-thread-db.c (auto_load_thread_db): Likewise.
	(check_thread_db_on_load): Likewise.
	* main.c (captured_main_1): Update.
	* maint-test-options.c (struct test_options_opts) <flag_opt, xx1_opt,
	xx2_opt, boolean_opt>: Change to bool.
	* maint-test-settings.c (maintenance_test_settings_boolean): Likewise.
	* maint.c (maintenance_profile_p): Likewise.
	(per_command_time): Likewise.
	(per_command_space): Likewise.
	(per_command_symtab): Likewise.
	* memattr.c (inaccessible_by_default): Likewise.
	* mi/mi-main.c (mi_async): Likewise.
	(mi_async_1): Likewise.
	* mips-tdep.c (mips64_transfers_32bit_regs_p): Likewise.
	* nat/fork-inferior.h (startup_with_shell): Likewise.
	* nat/linux-namespaces.c (debug_linux_namespaces): Likewise.
	* nat/linux-namespaces.h (debug_linux_namespaces): Likewise.
	* nios2-tdep.c (nios2_debug): Likewise.
	* or1k-tdep.c (or1k_debug): Likewise.
	* parse.c (parser_debug): Likewise.
	* parser-defs.h (parser_debug): Likewise.
	* printcmd.c (print_symbol_filename): Likewise.
	* proc-api.c (procfs_trace): Likewise.
	* python/py-auto-load.c (auto_load_python_scripts): Likewise.
	* python/py-param.c (union parmpy_variable): Add "bool boolval" field.
	(set_parameter_value): Update.
	(add_setshow_generic): Update.
	* python/py-value.c (copy_py_bool_obj): Change argument from int*
	to bool*.
	* python/python.c (gdbpy_parameter_value): Cast to bool* instead of
	int*.
	* ravenscar-thread.c (ravenscar_task_support): Change to bool.
	* record-btrace.c (record_btrace_target::store_registers): Update.
	* record-full.c (record_full_memory_query): Change to bool.
	(record_full_stop_at_limit): Likewise.
	* record-full.h (record_full_memory_query): Likewise.
	* remote-notif.c (notif_debug): Likewise.
	* remote-notif.h (notif_debug): Likewise.
	* remote.c (use_range_stepping): Likewise.
	(interrupt_on_connect): Likewise.
	(remote_break): Likewise.
	* ser-tcp.c (tcp_auto_retry): Likewise.
	* ser-unix.c (serial_hwflow): Likewise.
	* skip.c (debug_skip): Likewise.
	* solib-aix.c (solib_aix_debug): Likewise.
	* spu-tdep.c (spu_stop_on_load_p): Likewise.
	(spu_auto_flush_cache_p): Likewise.
	* stack.c (struct backtrace_cmd_options) <full, no_filters, hide>:
	Likewise.
	(struct info_print_options) <quiet>: Likewise.
	* symfile-debug.c (debug_symfile): Likewise.
	* symfile.c (auto_solib_add): Likewise.
	(separate_debug_file_debug): Likewise.
	* symfile.h (auto_solib_add): Likewise.
	(separate_debug_file_debug): Likewise.
	* symtab.c (basenames_may_differ): Likewise.
	(struct filename_partial_match_opts) <dirname, basename>: Likewise.
	(struct info_print_options) <quiet, exclude_minsyms>: Likewise.
	(struct info_types_options) <quiet>: Likewise.
	* symtab.h (demangle): Likewise.
	(basenames_may_differ): Likewise.
	* target-dcache.c (stack_cache_enabled_1): Likewise.
	(code_cache_enabled_1): Likewise.
	* target.c (trust_readonly): Likewise.
	(may_write_registers): Likewise.
	(may_write_memory): Likewise.
	(may_insert_breakpoints): Likewise.
	(may_insert_tracepoints): Likewise.
	(may_insert_fast_tracepoints): Likewise.
	(may_stop): Likewise.
	(auto_connect_native_target): Likewise.
	(target_stop_and_wait): Update.
	(target_async_permitted): Change to bool.
	(target_async_permitted_1): Likewise.
	(may_write_registers_1): Likewise.
	(may_write_memory_1): Likewise.
	(may_insert_breakpoints_1): Likewise.
	(may_insert_tracepoints_1): Likewise.
	(may_insert_fast_tracepoints_1): Likewise.
	(may_stop_1): Likewise.
	* target.h (target_async_permitted): Likewise.
	(may_write_registers): Likewise.
	(may_write_memory): Likewise.
	(may_insert_breakpoints): Likewise.
	(may_insert_tracepoints): Likewise.
	(may_insert_fast_tracepoints): Likewise.
	(may_stop): Likewise.
	* thread.c (struct info_threads_opts) <show_global_ids>: Likewise.
	(make_thread_apply_all_options_def_group): Change argument from int*
	to bool*.
	(thread_apply_all_command): Update.
	(print_thread_events): Change to bool.
	* top.c (confirm): Likewise.
	(command_editing_p): Likewise.
	(history_expansion_p): Likewise.
	(write_history_p): Likewise.
	(info_verbose): Likewise.
	* top.h (confirm): Likewise.
	(history_expansion_p): Likewise.
	* tracepoint.c (disconnected_tracing): Likewise.
	(circular_trace_buffer): Likewise.
	* typeprint.c (print_methods): Likewise.
	(print_typedefs): Likewise.
	* utils.c (debug_timestamp): Likewise.
	(sevenbit_strings): Likewise.
	(pagination_enabled): Likewise.
	* utils.h (sevenbit_strings): Likewise.
	(pagination_enabled): Likewise.
	* valops.c (overload_resolution): Likewise.
	* valprint.h (struct value_print_options) <prettyformat_arrays,
	prettyformat_structs, vtblprint, unionprint, addressprint, objectprint,
	stop_print_at_null, print_array_indexes, deref_ref, static_field_print,
	pascal_static_field_print, raw, summary, symbol_print, finish_print>:
	Likewise.
	* windows-nat.c (new_console): Likewise.
	(cygwin_exceptions): Likewise.
	(new_group): Likewise.
	(debug_exec): Likewise.
	(debug_events): Likewise.
	(debug_memory): Likewise.
	(debug_exceptions): Likewise.
	(useshell): Likewise.
	* windows-tdep.c (maint_display_all_tib): Likewise.
	* xml-support.c (debug_xml): Likewise.
 2019-09-18 09:35:12 +09:00
Tom Tromey
268a13a5a3 Rename common to gdbsupport 
This is the next patch in the ongoing series to move gdbsever to the
top level.

This patch just renames the "common" directory.  The idea is to do
this move in two parts: first rename the directory (this patch), then
move the directory to the top.  This approach makes the patches a bit
more tractable.

I chose the name "gdbsupport" for the directory.  However, as this
patch was largely written by sed, we could pick a new name without too
much difficulty.

Tested by the buildbot.

gdb/ChangeLog
2019-07-09  Tom Tromey  <tom@tromey.com>

	* contrib/ari/gdb_ari.sh: Change common to gdbsupport.
	* configure: Rebuild.
	* configure.ac: Change common to gdbsupport.
	* gdbsupport: Rename from common.
	* acinclude.m4: Change common to gdbsupport.
	* Makefile.in (CONFIG_SRC_SUBDIR, COMMON_SFILES)
	(HFILES_NO_SRCDIR, stamp-version, ALLDEPFILES): Change common to
	gdbsupport.
	* aarch64-tdep.c, ada-lang.c, ada-lang.h, agent.c, alloc.c,
	amd64-darwin-tdep.c, amd64-dicos-tdep.c, amd64-fbsd-nat.c,
	amd64-fbsd-tdep.c, amd64-linux-nat.c, amd64-linux-tdep.c,
	amd64-nbsd-tdep.c, amd64-obsd-tdep.c, amd64-sol2-tdep.c,
	amd64-tdep.c, amd64-windows-tdep.c, arch-utils.c,
	arch/aarch64-insn.c, arch/aarch64.c, arch/aarch64.h, arch/amd64.c,
	arch/amd64.h, arch/arm-get-next-pcs.c, arch/arm-linux.c,
	arch/arm.c, arch/i386.c, arch/i386.h, arch/ppc-linux-common.c,
	arch/riscv.c, arch/riscv.h, arch/tic6x.c, arm-tdep.c, auto-load.c,
	auxv.c, ax-gdb.c, ax-general.c, ax.h, breakpoint.c, breakpoint.h,
	btrace.c, btrace.h, build-id.c, build-id.h, c-lang.h, charset.c,
	charset.h, cli/cli-cmds.c, cli/cli-cmds.h, cli/cli-decode.c,
	cli/cli-dump.c, cli/cli-option.h, cli/cli-script.c,
	coff-pe-read.c, command.h, compile/compile-c-support.c,
	compile/compile-c.h, compile/compile-cplus-symbols.c,
	compile/compile-cplus-types.c, compile/compile-cplus.h,
	compile/compile-loc2c.c, compile/compile.c, completer.c,
	completer.h, contrib/ari/gdb_ari.sh, corefile.c, corelow.c,
	cp-support.c, cp-support.h, cp-valprint.c, csky-tdep.c, ctf.c,
	darwin-nat.c, debug.c, defs.h, disasm-selftests.c, disasm.c,
	disasm.h, dtrace-probe.c, dwarf-index-cache.c,
	dwarf-index-cache.h, dwarf-index-write.c, dwarf2-frame.c,
	dwarf2expr.c, dwarf2loc.c, dwarf2read.c, event-loop.c,
	event-top.c, exceptions.c, exec.c, extension.h, fbsd-nat.c,
	features/aarch64-core.c, features/aarch64-fpu.c,
	features/aarch64-pauth.c, features/aarch64-sve.c,
	features/i386/32bit-avx.c, features/i386/32bit-avx512.c,
	features/i386/32bit-core.c, features/i386/32bit-linux.c,
	features/i386/32bit-mpx.c, features/i386/32bit-pkeys.c,
	features/i386/32bit-segments.c, features/i386/32bit-sse.c,
	features/i386/64bit-avx.c, features/i386/64bit-avx512.c,
	features/i386/64bit-core.c, features/i386/64bit-linux.c,
	features/i386/64bit-mpx.c, features/i386/64bit-pkeys.c,
	features/i386/64bit-segments.c, features/i386/64bit-sse.c,
	features/i386/x32-core.c, features/riscv/32bit-cpu.c,
	features/riscv/32bit-csr.c, features/riscv/32bit-fpu.c,
	features/riscv/64bit-cpu.c, features/riscv/64bit-csr.c,
	features/riscv/64bit-fpu.c, features/tic6x-c6xp.c,
	features/tic6x-core.c, features/tic6x-gp.c, filename-seen-cache.h,
	findcmd.c, findvar.c, fork-child.c, gcore.c, gdb_bfd.c, gdb_bfd.h,
	gdb_proc_service.h, gdb_regex.c, gdb_select.h, gdb_usleep.c,
	gdbarch-selftests.c, gdbthread.h, gdbtypes.h, gnu-nat.c,
	go32-nat.c, guile/guile.c, guile/scm-ports.c,
	guile/scm-safe-call.c, guile/scm-type.c, i386-fbsd-nat.c,
	i386-fbsd-tdep.c, i386-go32-tdep.c, i386-linux-nat.c,
	i386-linux-tdep.c, i386-tdep.c, i387-tdep.c,
	ia64-libunwind-tdep.c, ia64-linux-nat.c, inf-child.c,
	inf-ptrace.c, infcall.c, infcall.h, infcmd.c, inferior-iter.h,
	inferior.c, inferior.h, inflow.c, inflow.h, infrun.c, infrun.h,
	inline-frame.c, language.h, linespec.c, linux-fork.c, linux-nat.c,
	linux-tdep.c, linux-thread-db.c, location.c, machoread.c,
	macrotab.h, main.c, maint.c, maint.h, memattr.c, memrange.h,
	mi/mi-cmd-break.h, mi/mi-cmd-env.c, mi/mi-cmd-stack.c,
	mi/mi-cmd-var.c, mi/mi-interp.c, mi/mi-main.c, mi/mi-parse.h,
	minsyms.c, mips-linux-tdep.c, namespace.h,
	nat/aarch64-linux-hw-point.c, nat/aarch64-linux-hw-point.h,
	nat/aarch64-linux.c, nat/aarch64-sve-linux-ptrace.c,
	nat/amd64-linux-siginfo.c, nat/fork-inferior.c,
	nat/linux-btrace.c, nat/linux-btrace.h, nat/linux-namespaces.c,
	nat/linux-nat.h, nat/linux-osdata.c, nat/linux-personality.c,
	nat/linux-procfs.c, nat/linux-ptrace.c, nat/linux-ptrace.h,
	nat/linux-waitpid.c, nat/mips-linux-watch.c,
	nat/mips-linux-watch.h, nat/ppc-linux.c, nat/x86-dregs.c,
	nat/x86-dregs.h, nat/x86-linux-dregs.c, nat/x86-linux.c,
	nto-procfs.c, nto-tdep.c, objfile-flags.h, objfiles.c, objfiles.h,
	obsd-nat.c, observable.h, osdata.c, p-valprint.c, parse.c,
	parser-defs.h, ppc-linux-nat.c, printcmd.c, probe.c, proc-api.c,
	procfs.c, producer.c, progspace.h, psymtab.h,
	python/py-framefilter.c, python/py-inferior.c, python/py-ref.h,
	python/py-type.c, python/python.c, record-btrace.c, record-full.c,
	record.c, record.h, regcache-dump.c, regcache.c, regcache.h,
	remote-fileio.c, remote-fileio.h, remote-sim.c, remote.c,
	riscv-tdep.c, rs6000-aix-tdep.c, rust-exp.y, s12z-tdep.c,
	selftest-arch.c, ser-base.c, ser-event.c, ser-pipe.c, ser-tcp.c,
	ser-unix.c, skip.c, solib-aix.c, solib-target.c, solib.c,
	source-cache.c, source.c, source.h, sparc-nat.c, spu-linux-nat.c,
	stack.c, stap-probe.c, symfile-add-flags.h, symfile.c, symfile.h,
	symtab.c, symtab.h, target-descriptions.c, target-descriptions.h,
	target-memory.c, target.c, target.h, target/waitstatus.c,
	target/waitstatus.h, thread-iter.h, thread.c, tilegx-tdep.c,
	top.c, top.h, tracefile-tfile.c, tracefile.c, tracepoint.c,
	tracepoint.h, tui/tui-io.c, ui-file.c, ui-out.h,
	unittests/array-view-selftests.c,
	unittests/child-path-selftests.c, unittests/cli-utils-selftests.c,
	unittests/common-utils-selftests.c,
	unittests/copy_bitwise-selftests.c, unittests/environ-selftests.c,
	unittests/format_pieces-selftests.c,
	unittests/function-view-selftests.c,
	unittests/lookup_name_info-selftests.c,
	unittests/memory-map-selftests.c, unittests/memrange-selftests.c,
	unittests/mkdir-recursive-selftests.c,
	unittests/observable-selftests.c,
	unittests/offset-type-selftests.c, unittests/optional-selftests.c,
	unittests/parse-connection-spec-selftests.c,
	unittests/ptid-selftests.c, unittests/rsp-low-selftests.c,
	unittests/scoped_fd-selftests.c,
	unittests/scoped_mmap-selftests.c,
	unittests/scoped_restore-selftests.c,
	unittests/string_view-selftests.c, unittests/style-selftests.c,
	unittests/tracepoint-selftests.c, unittests/unpack-selftests.c,
	unittests/utils-selftests.c, unittests/xml-utils-selftests.c,
	utils.c, utils.h, valarith.c, valops.c, valprint.c, value.c,
	value.h, varobj.c, varobj.h, windows-nat.c, x86-linux-nat.c,
	xml-support.c, xml-support.h, xml-tdesc.h, xstormy16-tdep.c,
	xtensa-linux-nat.c, dwarf2read.h: Change common to gdbsupport.

gdb/gdbserver/ChangeLog
2019-07-09  Tom Tromey  <tom@tromey.com>

	* configure: Rebuild.
	* configure.ac: Change common to gdbsupport.
	* acinclude.m4: Change common to gdbsupport.
	* Makefile.in (SFILES, OBS, GDBREPLAY_OBS, IPA_OBJS)
	(version-generated.c, gdbsupport/%-ipa.o, gdbsupport/%.o): Change
	common to gdbsupport.
	* ax.c, event-loop.c, fork-child.c, gdb_proc_service.h,
	gdbreplay.c, gdbthread.h, hostio-errno.c, hostio.c, i387-fp.c,
	inferiors.c, inferiors.h, linux-aarch64-tdesc-selftest.c,
	linux-amd64-ipa.c, linux-i386-ipa.c, linux-low.c,
	linux-tic6x-low.c, linux-x86-low.c, linux-x86-tdesc-selftest.c,
	linux-x86-tdesc.c, lynx-i386-low.c, lynx-low.c, mem-break.h,
	nto-x86-low.c, regcache.c, regcache.h, remote-utils.c, server.c,
	server.h, spu-low.c, symbol.c, target.h, tdesc.c, tdesc.h,
	thread-db.c, tracepoint.c, win32-i386-low.c, win32-low.c: Change
	common to gdbsupport.
 2019-07-09 07:45:38 -06:00
Philippe Waroquiers
68bb5386b8 Add previous_saved_command_line to allow a command to repeat a previous command. 
Currently, a previous command can be repeated when the user types an
empty line.  This is implemented in handle_line_of_input by
returning saved_command_line in case an empty line has been input.

If we want a command to repeat the previous command, we need to save
the previous saved_command_line, as when a command runs, the saved_command_line
already contains the current command line of the command being executed.

As suggested by Tom, the previous_saved_command_line is made static.
At the same time, saved_command_line is also made static.
The support functions/variables for the repeat command logic are now all
located inside top.c.

gdb/ChangeLog
2019-05-31  Philippe Waroquiers  <philippe.waroquiers@skynet.be>

	* top.h (saved_command_line): Remove declaration.
	* top.c (previous_saved_command_line, previous_repeat_arguments):
	New variables.
	(saved_command_line): Make static, define together with other
	'repeat variables'.
	(dont_repeat): Clear repeat_arguments.
	(repeat_previous, get_saved_command_line, save_command_line):
	New functions.
	(gdb_init): Initialize saved_command_line
	and previous_saved_command_line.
	* main.c (captured_main_1): Remove saved_command_line initialization.
	* event-top.c (handle_line_of_input): Update to use
	the new 'repeat' related functions instead of direct access to
	saved_command_line.
	* command.h (repeat_previous, get_saved_command_line,
	save_command_line): New declarations.
	(dont_repeat): Add comment.
 2019-05-31 17:10:08 +02:00
Alan Hayward
766f883622 Suppress SIGTTOU when handling errors 
Calls to error () can cause SIGTTOU to send gdb to the background.

For example, on an Arm build:
  (gdb) b main
  Breakpoint 1 at 0x10774: file /build/gdb/testsuite/../../../src/binutils-gdb/gdb/testsuite/gdb.base/watchpoint.c, line 174.
  (gdb) r
  Starting program: /build/gdb/testsuite/outputs/gdb.base/watchpoint/watchpoint

  [1]+  Stopped                 ../gdb ./outputs/gdb.base/watchpoint/watchpoint
  localhost$ fg
  ../gdb ./outputs/gdb.base/watchpoint/watchpoint
  Cannot parse expression `.L1199 4@r4'.
  warning: Probes-based dynamic linker interface failed.
  Reverting to original interface.

The SIGTTOU is raised whilst inside a syscall during the call to tcdrain.
Fix is to use scoped_ignore_sigttou to ensure SIGTTOU is blocked.

In addition fix include comments - job_control is not included via terminal.h

gdb/ChangeLog:

	* event-top.c: Remove include comment.
	* inflow.c (class scoped_ignore_sigttou): Move from here...
	* inflow.h (class scoped_ignore_sigttou): ...to here.
	* ser-unix.c (hardwire_drain_output): Block SIGTTOU during drain.
	* top.c:  Remove include comment.
 2019-05-28 10:07:54 +01:00
Tom Tromey
3d1cbb7893 Fix memory leak in exception code 
PR gdb/24475 concerns a memory leak coming from gdb's exception
handling code.

The leak occurs because throw_exception_sjlj does not arrange to
destroy the exception object it is passed.  However, because
gdb_exception has a destructor, it's undefined to longjmp in this
situation.

This patch fixes the problem by avoiding the need to run any
destructors in gdb_rl_callback_handler, by making the gdb_exception
"static".

gdb/ChangeLog
2019-04-25  Tom Tromey  <tromey@adacore.com>

	PR gdb/24475:
	* event-top.c (gdb_rl_callback_handler): Make "gdb_rl_expt"
	static.
 2019-04-25 12:59:35 -06:00
Tom Tromey
94aeb44b00 Make exception handling more efficient 
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.
 2019-04-25 12:59:35 -06:00
Tom Tromey
c6fdd8b205 Make SJLJ exceptions more efficient 
This changes the SJLJ exception handling code to be a bit more
efficient, by using rvalue references and move assignment when
possible.

Tested by the buildbot.

gdb/ChangeLog
2019-04-25  Tom Tromey  <tromey@adacore.com>

	* event-top.c (gdb_rl_callback_read_char_wrapper_noexcept)
	(gdb_rl_callback_handler): Use std::move.
	* common/common-exceptions.h (struct gdb_exception): Add move
	assignment operator.
	(throw_exception_sjlj): Change "exception" to const reference.
	* common/common-exceptions.c (exceptions_state_mc_catch): Update.
	(throw_exception_sjlj): Change "exception" to const reference.
 2019-04-25 12:59:35 -06:00
Tom Tromey
cc06b66897 Remove exception_none 
Now that gdb_exception has a constructor, there's no need for
exception_none.  This patch removes it.

gdb/ChangeLog
2019-04-25  Tom Tromey  <tromey@adacore.com>

	* xml-support.c (gdb_xml_parser::gdb_xml_parser): Update.
	* python/py-value.c (valpy_getitem, valpy_nonzero): Update.
	* python/py-inferior.c (infpy_write_memory, infpy_search_memory):
	Update.
	* python/py-breakpoint.c (bppy_set_condition, bppy_set_commands):
	Update.
	* mi/mi-interp.c (mi_interp::exec): Update.
	* linespec.c (parse_linespec): Update.
	* infcall.c (run_inferior_call): Update.
	* guile/scm-value.c (gdbscm_value_to_lazy_string): Update.
	* guile/scm-symbol.c (gdbscm_lookup_symbol)
	(gdbscm_lookup_global_symbol): Update.
	* guile/scm-param.c (gdbscm_parameter_value): Update.
	* guile/scm-frame.c (gdbscm_frame_read_register)
	(gdbscm_frame_read_var): Update.
	* guile/scm-breakpoint.c (gdbscm_register_breakpoint_x): Update.
	* exec.c (try_open_exec_file): Update.
	* event-top.c (gdb_rl_callback_read_char_wrapper_noexcept)
	(gdb_rl_callback_handler): Update.
	* common/common-exceptions.h (exception_none): Don't declare.
	* common/common-exceptions.c (exception_none): Don't define.
	(struct catcher) <exception>: Update.
	* cli/cli-interp.c (safe_execute_command): Update.
	* breakpoint.c (insert_bp_location, location_to_sals): Update.
 2019-04-25 12:59:35 -06:00
Tom Tromey
230d2906b9 Rename gdb exception types 
This renames the gdb exception types.  The old types were only needed
due to the macros in common-exception.h that are now gone.

The intermediate layer of gdb_exception_RETURN_MASK_ALL did not seem
needed, so this patch removes it entirely.

gdb/ChangeLog
2019-04-08  Tom Tromey  <tom@tromey.com>

	* common/common-exceptions.h (gdb_exception_RETURN_MASK_ALL):
	Remove.
	(gdb_exception_error): Rename from
	gdb_exception_RETURN_MASK_ERROR.
	(gdb_exception_quit): Rename from gdb_exception_RETURN_MASK_QUIT.
	(gdb_quit_bad_alloc): Update.
	* aarch64-tdep.c: Update.
	* ada-lang.c: Update.
	* ada-typeprint.c: Update.
	* ada-valprint.c: Update.
	* amd64-tdep.c: Update.
	* arch-utils.c: Update.
	* break-catch-throw.c: Update.
	* breakpoint.c: Update.
	* btrace.c: Update.
	* c-varobj.c: Update.
	* cli/cli-cmds.c: Update.
	* cli/cli-interp.c: Update.
	* cli/cli-script.c: Update.
	* common/common-exceptions.c: Update.
	* common/new-op.c: Update.
	* common/selftest.c: Update.
	* compile/compile-c-symbols.c: Update.
	* compile/compile-cplus-symbols.c: Update.
	* compile/compile-object-load.c: Update.
	* compile/compile-object-run.c: Update.
	* completer.c: Update.
	* corelow.c: Update.
	* cp-abi.c: Update.
	* cp-support.c: Update.
	* cp-valprint.c: Update.
	* darwin-nat.c: Update.
	* disasm-selftests.c: Update.
	* dtrace-probe.c: Update.
	* dwarf-index-cache.c: Update.
	* dwarf-index-write.c: Update.
	* dwarf2-frame-tailcall.c: Update.
	* dwarf2-frame.c: Update.
	* dwarf2loc.c: Update.
	* dwarf2read.c: Update.
	* eval.c: Update.
	* event-loop.c: Update.
	* event-top.c: Update.
	* exec.c: Update.
	* f-valprint.c: Update.
	* fbsd-tdep.c: Update.
	* frame-unwind.c: Update.
	* frame.c: Update.
	* gdbtypes.c: Update.
	* gnu-v3-abi.c: Update.
	* guile/guile-internal.h: Update.
	* guile/scm-block.c: Update.
	* guile/scm-breakpoint.c: Update.
	* guile/scm-cmd.c: Update.
	* guile/scm-disasm.c: Update.
	* guile/scm-frame.c: Update.
	* guile/scm-lazy-string.c: Update.
	* guile/scm-math.c: Update.
	* guile/scm-param.c: Update.
	* guile/scm-ports.c: Update.
	* guile/scm-pretty-print.c: Update.
	* guile/scm-symbol.c: Update.
	* guile/scm-symtab.c: Update.
	* guile/scm-type.c: Update.
	* guile/scm-value.c: Update.
	* i386-linux-tdep.c: Update.
	* i386-tdep.c: Update.
	* inf-loop.c: Update.
	* infcall.c: Update.
	* infcmd.c: Update.
	* infrun.c: Update.
	* jit.c: Update.
	* language.c: Update.
	* linespec.c: Update.
	* linux-fork.c: Update.
	* linux-nat.c: Update.
	* linux-tdep.c: Update.
	* linux-thread-db.c: Update.
	* main.c: Update.
	* mi/mi-cmd-break.c: Update.
	* mi/mi-cmd-stack.c: Update.
	* mi/mi-interp.c: Update.
	* mi/mi-main.c: Update.
	* objc-lang.c: Update.
	* p-valprint.c: Update.
	* parse.c: Update.
	* ppc-linux-tdep.c: Update.
	* printcmd.c: Update.
	* python/py-arch.c: Update.
	* python/py-breakpoint.c: Update.
	* python/py-cmd.c: Update.
	* python/py-finishbreakpoint.c: Update.
	* python/py-frame.c: Update.
	* python/py-framefilter.c: Update.
	* python/py-gdb-readline.c: Update.
	* python/py-inferior.c: Update.
	* python/py-infthread.c: Update.
	* python/py-lazy-string.c: Update.
	* python/py-linetable.c: Update.
	* python/py-objfile.c: Update.
	* python/py-param.c: Update.
	* python/py-prettyprint.c: Update.
	* python/py-progspace.c: Update.
	* python/py-record-btrace.c: Update.
	* python/py-record.c: Update.
	* python/py-symbol.c: Update.
	* python/py-type.c: Update.
	* python/py-unwind.c: Update.
	* python/py-utils.c: Update.
	* python/py-value.c: Update.
	* python/python.c: Update.
	* record-btrace.c: Update.
	* record-full.c: Update.
	* remote-fileio.c: Update.
	* remote.c: Update.
	* riscv-tdep.c: Update.
	* rs6000-aix-tdep.c: Update.
	* rs6000-tdep.c: Update.
	* rust-exp.y: Update.
	* rust-lang.c: Update.
	* s390-tdep.c: Update.
	* selftest-arch.c: Update.
	* solib-dsbt.c: Update.
	* solib-frv.c: Update.
	* solib-spu.c: Update.
	* solib-svr4.c: Update.
	* solib.c: Update.
	* sparc64-linux-tdep.c: Update.
	* stack.c: Update.
	* symfile-mem.c: Update.
	* symmisc.c: Update.
	* target.c: Update.
	* thread.c: Update.
	* top.c: Update.
	* tracefile-tfile.c: Update.
	* tui/tui.c: Update.
	* typeprint.c: Update.
	* unittests/cli-utils-selftests.c: Update.
	* unittests/parse-connection-spec-selftests.c: Update.
	* valops.c: Update.
	* valprint.c: Update.
	* value.c: Update.
	* varobj.c: Update.
	* windows-nat.c: Update.
	* x86-linux-nat.c: Update.
	* xml-support.c: Update.

gdb/gdbserver/ChangeLog
2019-04-08  Tom Tromey  <tom@tromey.com>

	* gdbreplay.c: Update.
	* linux-low.c: Update.
	* server.c: Update.
 2019-04-08 09:05:40 -06:00
Tom Tromey
a70b814420 Rewrite TRY/CATCH 
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.
 2019-04-08 09:05:39 -06:00
Tom Tromey
4de283e4b5 Revert the header-sorting patch 
Andreas Schwab and John Baldwin pointed out some bugs in the header
sorting patch; and I noticed that the output was not correct when
limited to a subset of files (a bug in my script).

So, I'm reverting the patch.  I may try again after fixing the issues
pointed out.

gdb/ChangeLog
2019-04-05  Tom Tromey  <tom@tromey.com>

	Revert the header-sorting patch.
	* ft32-tdep.c: Revert.
	* frv-tdep.c: Revert.
	* frv-linux-tdep.c: Revert.
	* frame.c: Revert.
	* frame-unwind.c: Revert.
	* frame-base.c: Revert.
	* fork-child.c: Revert.
	* findvar.c: Revert.
	* findcmd.c: Revert.
	* filesystem.c: Revert.
	* filename-seen-cache.h: Revert.
	* filename-seen-cache.c: Revert.
	* fbsd-tdep.c: Revert.
	* fbsd-nat.h: Revert.
	* fbsd-nat.c: Revert.
	* f-valprint.c: Revert.
	* f-typeprint.c: Revert.
	* f-lang.c: Revert.
	* extension.h: Revert.
	* extension.c: Revert.
	* extension-priv.h: Revert.
	* expprint.c: Revert.
	* exec.h: Revert.
	* exec.c: Revert.
	* exceptions.c: Revert.
	* event-top.c: Revert.
	* event-loop.c: Revert.
	* eval.c: Revert.
	* elfread.c: Revert.
	* dwarf2read.h: Revert.
	* dwarf2read.c: Revert.
	* dwarf2loc.c: Revert.
	* dwarf2expr.h: Revert.
	* dwarf2expr.c: Revert.
	* dwarf2-frame.c: Revert.
	* dwarf2-frame-tailcall.c: Revert.
	* dwarf-index-write.h: Revert.
	* dwarf-index-write.c: Revert.
	* dwarf-index-common.c: Revert.
	* dwarf-index-cache.h: Revert.
	* dwarf-index-cache.c: Revert.
	* dummy-frame.c: Revert.
	* dtrace-probe.c: Revert.
	* disasm.h: Revert.
	* disasm.c: Revert.
	* disasm-selftests.c: Revert.
	* dictionary.c: Revert.
	* dicos-tdep.c: Revert.
	* demangle.c: Revert.
	* dcache.h: Revert.
	* dcache.c: Revert.
	* darwin-nat.h: Revert.
	* darwin-nat.c: Revert.
	* darwin-nat-info.c: Revert.
	* d-valprint.c: Revert.
	* d-namespace.c: Revert.
	* d-lang.c: Revert.
	* ctf.c: Revert.
	* csky-tdep.c: Revert.
	* csky-linux-tdep.c: Revert.
	* cris-tdep.c: Revert.
	* cris-linux-tdep.c: Revert.
	* cp-valprint.c: Revert.
	* cp-support.c: Revert.
	* cp-namespace.c: Revert.
	* cp-abi.c: Revert.
	* corelow.c: Revert.
	* corefile.c: Revert.
	* continuations.c: Revert.
	* completer.h: Revert.
	* completer.c: Revert.
	* complaints.c: Revert.
	* coffread.c: Revert.
	* coff-pe-read.c: Revert.
	* cli-out.h: Revert.
	* cli-out.c: Revert.
	* charset.c: Revert.
	* c-varobj.c: Revert.
	* c-valprint.c: Revert.
	* c-typeprint.c: Revert.
	* c-lang.c: Revert.
	* buildsym.c: Revert.
	* buildsym-legacy.c: Revert.
	* build-id.h: Revert.
	* build-id.c: Revert.
	* btrace.c: Revert.
	* bsd-uthread.c: Revert.
	* breakpoint.h: Revert.
	* breakpoint.c: Revert.
	* break-catch-throw.c: Revert.
	* break-catch-syscall.c: Revert.
	* break-catch-sig.c: Revert.
	* blockframe.c: Revert.
	* block.c: Revert.
	* bfin-tdep.c: Revert.
	* bfin-linux-tdep.c: Revert.
	* bfd-target.c: Revert.
	* bcache.c: Revert.
	* ax-general.c: Revert.
	* ax-gdb.h: Revert.
	* ax-gdb.c: Revert.
	* avr-tdep.c: Revert.
	* auxv.c: Revert.
	* auto-load.c: Revert.
	* arm-wince-tdep.c: Revert.
	* arm-tdep.c: Revert.
	* arm-symbian-tdep.c: Revert.
	* arm-pikeos-tdep.c: Revert.
	* arm-obsd-tdep.c: Revert.
	* arm-nbsd-tdep.c: Revert.
	* arm-nbsd-nat.c: Revert.
	* arm-linux-tdep.c: Revert.
	* arm-linux-nat.c: Revert.
	* arm-fbsd-tdep.c: Revert.
	* arm-fbsd-nat.c: Revert.
	* arm-bsd-tdep.c: Revert.
	* arch-utils.c: Revert.
	* arc-tdep.c: Revert.
	* arc-newlib-tdep.c: Revert.
	* annotate.h: Revert.
	* annotate.c: Revert.
	* amd64-windows-tdep.c: Revert.
	* amd64-windows-nat.c: Revert.
	* amd64-tdep.c: Revert.
	* amd64-sol2-tdep.c: Revert.
	* amd64-obsd-tdep.c: Revert.
	* amd64-obsd-nat.c: Revert.
	* amd64-nbsd-tdep.c: Revert.
	* amd64-nbsd-nat.c: Revert.
	* amd64-nat.c: Revert.
	* amd64-linux-tdep.c: Revert.
	* amd64-linux-nat.c: Revert.
	* amd64-fbsd-tdep.c: Revert.
	* amd64-fbsd-nat.c: Revert.
	* amd64-dicos-tdep.c: Revert.
	* amd64-darwin-tdep.c: Revert.
	* amd64-bsd-nat.c: Revert.
	* alpha-tdep.c: Revert.
	* alpha-obsd-tdep.c: Revert.
	* alpha-nbsd-tdep.c: Revert.
	* alpha-mdebug-tdep.c: Revert.
	* alpha-linux-tdep.c: Revert.
	* alpha-linux-nat.c: Revert.
	* alpha-bsd-tdep.c: Revert.
	* alpha-bsd-nat.c: Revert.
	* aix-thread.c: Revert.
	* agent.c: Revert.
	* addrmap.c: Revert.
	* ada-varobj.c: Revert.
	* ada-valprint.c: Revert.
	* ada-typeprint.c: Revert.
	* ada-tasks.c: Revert.
	* ada-lang.c: Revert.
	* aarch64-tdep.c: Revert.
	* aarch64-ravenscar-thread.c: Revert.
	* aarch64-newlib-tdep.c: Revert.
	* aarch64-linux-tdep.c: Revert.
	* aarch64-linux-nat.c: Revert.
	* aarch64-fbsd-tdep.c: Revert.
	* aarch64-fbsd-nat.c: Revert.
	* aarch32-linux-nat.c: Revert.
 2019-04-06 13:47:34 -06:00
Tom Tromey
d55e5aa6b2 Sort includes for files gdb/[a-f]*.[chyl]. 
This patch sorts the include files for the files [a-f]*.[chyl].
The patch was written by a script.

Tested by the buildbot.

I will follow up with patches to sort the remaining files, by sorting
a subset, testing them, and then checking them in.

gdb/ChangeLog
2019-04-05  Tom Tromey  <tom@tromey.com>

	* ft32-tdep.c: Sort headers.
	* frv-tdep.c: Sort headers.
	* frv-linux-tdep.c: Sort headers.
	* frame.c: Sort headers.
	* frame-unwind.c: Sort headers.
	* frame-base.c: Sort headers.
	* fork-child.c: Sort headers.
	* findvar.c: Sort headers.
	* findcmd.c: Sort headers.
	* filesystem.c: Sort headers.
	* filename-seen-cache.h: Sort headers.
	* filename-seen-cache.c: Sort headers.
	* fbsd-tdep.c: Sort headers.
	* fbsd-nat.h: Sort headers.
	* fbsd-nat.c: Sort headers.
	* f-valprint.c: Sort headers.
	* f-typeprint.c: Sort headers.
	* f-lang.c: Sort headers.
	* extension.h: Sort headers.
	* extension.c: Sort headers.
	* extension-priv.h: Sort headers.
	* expprint.c: Sort headers.
	* exec.h: Sort headers.
	* exec.c: Sort headers.
	* exceptions.c: Sort headers.
	* event-top.c: Sort headers.
	* event-loop.c: Sort headers.
	* eval.c: Sort headers.
	* elfread.c: Sort headers.
	* dwarf2read.h: Sort headers.
	* dwarf2read.c: Sort headers.
	* dwarf2loc.c: Sort headers.
	* dwarf2expr.h: Sort headers.
	* dwarf2expr.c: Sort headers.
	* dwarf2-frame.c: Sort headers.
	* dwarf2-frame-tailcall.c: Sort headers.
	* dwarf-index-write.h: Sort headers.
	* dwarf-index-write.c: Sort headers.
	* dwarf-index-common.c: Sort headers.
	* dwarf-index-cache.h: Sort headers.
	* dwarf-index-cache.c: Sort headers.
	* dummy-frame.c: Sort headers.
	* dtrace-probe.c: Sort headers.
	* disasm.h: Sort headers.
	* disasm.c: Sort headers.
	* disasm-selftests.c: Sort headers.
	* dictionary.c: Sort headers.
	* dicos-tdep.c: Sort headers.
	* demangle.c: Sort headers.
	* dcache.h: Sort headers.
	* dcache.c: Sort headers.
	* darwin-nat.h: Sort headers.
	* darwin-nat.c: Sort headers.
	* darwin-nat-info.c: Sort headers.
	* d-valprint.c: Sort headers.
	* d-namespace.c: Sort headers.
	* d-lang.c: Sort headers.
	* ctf.c: Sort headers.
	* csky-tdep.c: Sort headers.
	* csky-linux-tdep.c: Sort headers.
	* cris-tdep.c: Sort headers.
	* cris-linux-tdep.c: Sort headers.
	* cp-valprint.c: Sort headers.
	* cp-support.c: Sort headers.
	* cp-namespace.c: Sort headers.
	* cp-abi.c: Sort headers.
	* corelow.c: Sort headers.
	* corefile.c: Sort headers.
	* continuations.c: Sort headers.
	* completer.h: Sort headers.
	* completer.c: Sort headers.
	* complaints.c: Sort headers.
	* coffread.c: Sort headers.
	* coff-pe-read.c: Sort headers.
	* cli-out.h: Sort headers.
	* cli-out.c: Sort headers.
	* charset.c: Sort headers.
	* c-varobj.c: Sort headers.
	* c-valprint.c: Sort headers.
	* c-typeprint.c: Sort headers.
	* c-lang.c: Sort headers.
	* buildsym.c: Sort headers.
	* buildsym-legacy.c: Sort headers.
	* build-id.h: Sort headers.
	* build-id.c: Sort headers.
	* btrace.c: Sort headers.
	* bsd-uthread.c: Sort headers.
	* breakpoint.h: Sort headers.
	* breakpoint.c: Sort headers.
	* break-catch-throw.c: Sort headers.
	* break-catch-syscall.c: Sort headers.
	* break-catch-sig.c: Sort headers.
	* blockframe.c: Sort headers.
	* block.c: Sort headers.
	* bfin-tdep.c: Sort headers.
	* bfin-linux-tdep.c: Sort headers.
	* bfd-target.c: Sort headers.
	* bcache.c: Sort headers.
	* ax-general.c: Sort headers.
	* ax-gdb.h: Sort headers.
	* ax-gdb.c: Sort headers.
	* avr-tdep.c: Sort headers.
	* auxv.c: Sort headers.
	* auto-load.c: Sort headers.
	* arm-wince-tdep.c: Sort headers.
	* arm-tdep.c: Sort headers.
	* arm-symbian-tdep.c: Sort headers.
	* arm-pikeos-tdep.c: Sort headers.
	* arm-obsd-tdep.c: Sort headers.
	* arm-nbsd-tdep.c: Sort headers.
	* arm-nbsd-nat.c: Sort headers.
	* arm-linux-tdep.c: Sort headers.
	* arm-linux-nat.c: Sort headers.
	* arm-fbsd-tdep.c: Sort headers.
	* arm-fbsd-nat.c: Sort headers.
	* arm-bsd-tdep.c: Sort headers.
	* arch-utils.c: Sort headers.
	* arc-tdep.c: Sort headers.
	* arc-newlib-tdep.c: Sort headers.
	* annotate.h: Sort headers.
	* annotate.c: Sort headers.
	* amd64-windows-tdep.c: Sort headers.
	* amd64-windows-nat.c: Sort headers.
	* amd64-tdep.c: Sort headers.
	* amd64-sol2-tdep.c: Sort headers.
	* amd64-obsd-tdep.c: Sort headers.
	* amd64-obsd-nat.c: Sort headers.
	* amd64-nbsd-tdep.c: Sort headers.
	* amd64-nbsd-nat.c: Sort headers.
	* amd64-nat.c: Sort headers.
	* amd64-linux-tdep.c: Sort headers.
	* amd64-linux-nat.c: Sort headers.
	* amd64-fbsd-tdep.c: Sort headers.
	* amd64-fbsd-nat.c: Sort headers.
	* amd64-dicos-tdep.c: Sort headers.
	* amd64-darwin-tdep.c: Sort headers.
	* amd64-bsd-nat.c: Sort headers.
	* alpha-tdep.c: Sort headers.
	* alpha-obsd-tdep.c: Sort headers.
	* alpha-nbsd-tdep.c: Sort headers.
	* alpha-mdebug-tdep.c: Sort headers.
	* alpha-linux-tdep.c: Sort headers.
	* alpha-linux-nat.c: Sort headers.
	* alpha-bsd-tdep.c: Sort headers.
	* alpha-bsd-nat.c: Sort headers.
	* aix-thread.c: Sort headers.
	* agent.c: Sort headers.
	* addrmap.c: Sort headers.
	* ada-varobj.c: Sort headers.
	* ada-valprint.c: Sort headers.
	* ada-typeprint.c: Sort headers.
	* ada-tasks.c: Sort headers.
	* ada-lang.c: Sort headers.
	* aarch64-tdep.c: Sort headers.
	* aarch64-ravenscar-thread.c: Sort headers.
	* aarch64-newlib-tdep.c: Sort headers.
	* aarch64-linux-tdep.c: Sort headers.
	* aarch64-linux-nat.c: Sort headers.
	* aarch64-fbsd-tdep.c: Sort headers.
	* aarch64-fbsd-nat.c: Sort headers.
	* aarch32-linux-nat.c: Sort headers.
 2019-04-05 19:09:35 -06:00
Tom Tromey
0747795c08 Normalize includes to use common/ 
This changes all includes to use the form "common/filename.h" rather
than just "filename.h".  This was written by a script.

gdb/ChangeLog
2019-01-25  Tom Tromey  <tom@tromey.com>

	* xtensa-linux-nat.c: Fix common/ includes.
	* xml-support.h: Fix common/ includes.
	* xml-support.c: Fix common/ includes.
	* x86-linux-nat.c: Fix common/ includes.
	* windows-nat.c: Fix common/ includes.
	* varobj.h: Fix common/ includes.
	* varobj.c: Fix common/ includes.
	* value.c: Fix common/ includes.
	* valops.c: Fix common/ includes.
	* utils.c: Fix common/ includes.
	* unittests/xml-utils-selftests.c: Fix common/ includes.
	* unittests/utils-selftests.c: Fix common/ includes.
	* unittests/unpack-selftests.c: Fix common/ includes.
	* unittests/tracepoint-selftests.c: Fix common/ includes.
	* unittests/style-selftests.c: Fix common/ includes.
	* unittests/string_view-selftests.c: Fix common/ includes.
	* unittests/scoped_restore-selftests.c: Fix common/ includes.
	* unittests/scoped_mmap-selftests.c: Fix common/ includes.
	* unittests/scoped_fd-selftests.c: Fix common/ includes.
	* unittests/rsp-low-selftests.c: Fix common/ includes.
	* unittests/parse-connection-spec-selftests.c: Fix common/
	includes.
	* unittests/optional-selftests.c: Fix common/ includes.
	* unittests/offset-type-selftests.c: Fix common/ includes.
	* unittests/observable-selftests.c: Fix common/ includes.
	* unittests/mkdir-recursive-selftests.c: Fix common/ includes.
	* unittests/memrange-selftests.c: Fix common/ includes.
	* unittests/memory-map-selftests.c: Fix common/ includes.
	* unittests/lookup_name_info-selftests.c: Fix common/ includes.
	* unittests/function-view-selftests.c: Fix common/ includes.
	* unittests/environ-selftests.c: Fix common/ includes.
	* unittests/copy_bitwise-selftests.c: Fix common/ includes.
	* unittests/common-utils-selftests.c: Fix common/ includes.
	* unittests/cli-utils-selftests.c: Fix common/ includes.
	* unittests/array-view-selftests.c: Fix common/ includes.
	* ui-file.c: Fix common/ includes.
	* tui/tui-io.c: Fix common/ includes.
	* tracepoint.h: Fix common/ includes.
	* tracepoint.c: Fix common/ includes.
	* tracefile-tfile.c: Fix common/ includes.
	* top.h: Fix common/ includes.
	* top.c: Fix common/ includes.
	* thread.c: Fix common/ includes.
	* target/waitstatus.h: Fix common/ includes.
	* target/waitstatus.c: Fix common/ includes.
	* target.h: Fix common/ includes.
	* target.c: Fix common/ includes.
	* target-memory.c: Fix common/ includes.
	* target-descriptions.c: Fix common/ includes.
	* symtab.h: Fix common/ includes.
	* symfile.c: Fix common/ includes.
	* stap-probe.c: Fix common/ includes.
	* spu-linux-nat.c: Fix common/ includes.
	* sparc-nat.c: Fix common/ includes.
	* source.c: Fix common/ includes.
	* solib.c: Fix common/ includes.
	* solib-target.c: Fix common/ includes.
	* ser-unix.c: Fix common/ includes.
	* ser-tcp.c: Fix common/ includes.
	* ser-pipe.c: Fix common/ includes.
	* ser-base.c: Fix common/ includes.
	* selftest-arch.c: Fix common/ includes.
	* s12z-tdep.c: Fix common/ includes.
	* rust-exp.y: Fix common/ includes.
	* rs6000-aix-tdep.c: Fix common/ includes.
	* riscv-tdep.c: Fix common/ includes.
	* remote.c: Fix common/ includes.
	* remote-notif.h: Fix common/ includes.
	* remote-fileio.h: Fix common/ includes.
	* remote-fileio.c: Fix common/ includes.
	* regcache.h: Fix common/ includes.
	* regcache.c: Fix common/ includes.
	* record-btrace.c: Fix common/ includes.
	* python/python.c: Fix common/ includes.
	* python/py-type.c: Fix common/ includes.
	* python/py-inferior.c: Fix common/ includes.
	* progspace.h: Fix common/ includes.
	* producer.c: Fix common/ includes.
	* procfs.c: Fix common/ includes.
	* proc-api.c: Fix common/ includes.
	* printcmd.c: Fix common/ includes.
	* ppc-linux-nat.c: Fix common/ includes.
	* parser-defs.h: Fix common/ includes.
	* osdata.c: Fix common/ includes.
	* obsd-nat.c: Fix common/ includes.
	* nat/x86-linux.c: Fix common/ includes.
	* nat/x86-linux-dregs.c: Fix common/ includes.
	* nat/x86-dregs.h: Fix common/ includes.
	* nat/x86-dregs.c: Fix common/ includes.
	* nat/ppc-linux.c: Fix common/ includes.
	* nat/mips-linux-watch.h: Fix common/ includes.
	* nat/mips-linux-watch.c: Fix common/ includes.
	* nat/linux-waitpid.c: Fix common/ includes.
	* nat/linux-ptrace.h: Fix common/ includes.
	* nat/linux-ptrace.c: Fix common/ includes.
	* nat/linux-procfs.c: Fix common/ includes.
	* nat/linux-personality.c: Fix common/ includes.
	* nat/linux-osdata.c: Fix common/ includes.
	* nat/linux-namespaces.c: Fix common/ includes.
	* nat/linux-btrace.h: Fix common/ includes.
	* nat/linux-btrace.c: Fix common/ includes.
	* nat/fork-inferior.c: Fix common/ includes.
	* nat/amd64-linux-siginfo.c: Fix common/ includes.
	* nat/aarch64-sve-linux-ptrace.c: Fix common/ includes.
	* nat/aarch64-linux.c: Fix common/ includes.
	* nat/aarch64-linux-hw-point.h: Fix common/ includes.
	* nat/aarch64-linux-hw-point.c: Fix common/ includes.
	* namespace.h: Fix common/ includes.
	* mips-linux-tdep.c: Fix common/ includes.
	* minsyms.c: Fix common/ includes.
	* mi/mi-parse.h: Fix common/ includes.
	* mi/mi-main.c: Fix common/ includes.
	* mi/mi-cmd-env.c: Fix common/ includes.
	* memrange.h: Fix common/ includes.
	* memattr.c: Fix common/ includes.
	* maint.h: Fix common/ includes.
	* maint.c: Fix common/ includes.
	* main.c: Fix common/ includes.
	* machoread.c: Fix common/ includes.
	* location.c: Fix common/ includes.
	* linux-thread-db.c: Fix common/ includes.
	* linux-nat.c: Fix common/ includes.
	* linux-fork.c: Fix common/ includes.
	* inline-frame.c: Fix common/ includes.
	* infrun.c: Fix common/ includes.
	* inflow.c: Fix common/ includes.
	* inferior.h: Fix common/ includes.
	* inferior.c: Fix common/ includes.
	* infcmd.c: Fix common/ includes.
	* inf-ptrace.c: Fix common/ includes.
	* inf-child.c: Fix common/ includes.
	* ia64-linux-nat.c: Fix common/ includes.
	* i387-tdep.c: Fix common/ includes.
	* i386-tdep.c: Fix common/ includes.
	* i386-linux-tdep.c: Fix common/ includes.
	* i386-linux-nat.c: Fix common/ includes.
	* i386-go32-tdep.c: Fix common/ includes.
	* i386-fbsd-tdep.c: Fix common/ includes.
	* i386-fbsd-nat.c: Fix common/ includes.
	* guile/scm-type.c: Fix common/ includes.
	* guile/guile.c: Fix common/ includes.
	* go32-nat.c: Fix common/ includes.
	* gnu-nat.c: Fix common/ includes.
	* gdbthread.h: Fix common/ includes.
	* gdbarch-selftests.c: Fix common/ includes.
	* gdb_usleep.c: Fix common/ includes.
	* gdb_select.h: Fix common/ includes.
	* gdb_bfd.c: Fix common/ includes.
	* gcore.c: Fix common/ includes.
	* fork-child.c: Fix common/ includes.
	* findvar.c: Fix common/ includes.
	* fbsd-nat.c: Fix common/ includes.
	* event-top.c: Fix common/ includes.
	* event-loop.c: Fix common/ includes.
	* dwarf2read.c: Fix common/ includes.
	* dwarf2loc.c: Fix common/ includes.
	* dwarf2-frame.c: Fix common/ includes.
	* dwarf-index-cache.c: Fix common/ includes.
	* dtrace-probe.c: Fix common/ includes.
	* disasm-selftests.c: Fix common/ includes.
	* defs.h: Fix common/ includes.
	* csky-tdep.c: Fix common/ includes.
	* cp-valprint.c: Fix common/ includes.
	* cp-support.h: Fix common/ includes.
	* cp-support.c: Fix common/ includes.
	* corelow.c: Fix common/ includes.
	* completer.h: Fix common/ includes.
	* completer.c: Fix common/ includes.
	* compile/compile.c: Fix common/ includes.
	* compile/compile-loc2c.c: Fix common/ includes.
	* compile/compile-cplus-types.c: Fix common/ includes.
	* compile/compile-cplus-symbols.c: Fix common/ includes.
	* command.h: Fix common/ includes.
	* cli/cli-dump.c: Fix common/ includes.
	* cli/cli-cmds.c: Fix common/ includes.
	* charset.c: Fix common/ includes.
	* build-id.c: Fix common/ includes.
	* btrace.h: Fix common/ includes.
	* btrace.c: Fix common/ includes.
	* breakpoint.h: Fix common/ includes.
	* breakpoint.c: Fix common/ includes.
	* ax.h:
	(enum agent_op): Fix common/ includes.
	* ax-general.c (struct aop_map): Fix common/ includes.
	* ax-gdb.c: Fix common/ includes.
	* auxv.c: Fix common/ includes.
	* auto-load.c: Fix common/ includes.
	* arm-tdep.c: Fix common/ includes.
	* arch/riscv.c: Fix common/ includes.
	* arch/ppc-linux-common.c: Fix common/ includes.
	* arch/i386.c: Fix common/ includes.
	* arch/arm.c: Fix common/ includes.
	* arch/arm-linux.c: Fix common/ includes.
	* arch/arm-get-next-pcs.c: Fix common/ includes.
	* arch/amd64.c: Fix common/ includes.
	* arch/aarch64.c: Fix common/ includes.
	* arch/aarch64-insn.c: Fix common/ includes.
	* arch-utils.c: Fix common/ includes.
	* amd64-windows-tdep.c: Fix common/ includes.
	* amd64-tdep.c: Fix common/ includes.
	* amd64-sol2-tdep.c: Fix common/ includes.
	* amd64-obsd-tdep.c: Fix common/ includes.
	* amd64-nbsd-tdep.c: Fix common/ includes.
	* amd64-linux-tdep.c: Fix common/ includes.
	* amd64-linux-nat.c: Fix common/ includes.
	* amd64-fbsd-tdep.c: Fix common/ includes.
	* amd64-fbsd-nat.c: Fix common/ includes.
	* amd64-dicos-tdep.c: Fix common/ includes.
	* amd64-darwin-tdep.c: Fix common/ includes.
	* agent.c: Fix common/ includes.
	* ada-lang.h: Fix common/ includes.
	* ada-lang.c: Fix common/ includes.
	* aarch64-tdep.c: Fix common/ includes.

gdb/gdbserver/ChangeLog
2019-01-25  Tom Tromey  <tom@tromey.com>

	* win32-low.c: Fix common/ includes.
	* win32-i386-low.c: Fix common/ includes.
	* tracepoint.c: Fix common/ includes.
	* thread-db.c: Fix common/ includes.
	* target.h: Fix common/ includes.
	* symbol.c: Fix common/ includes.
	* spu-low.c: Fix common/ includes.
	* server.h: Fix common/ includes.
	* server.c: Fix common/ includes.
	* remote-utils.c: Fix common/ includes.
	* regcache.h: Fix common/ includes.
	* regcache.c: Fix common/ includes.
	* nto-x86-low.c: Fix common/ includes.
	* notif.h: Fix common/ includes.
	* mem-break.h: Fix common/ includes.
	* lynx-low.c: Fix common/ includes.
	* lynx-i386-low.c: Fix common/ includes.
	* linux-x86-tdesc-selftest.c: Fix common/ includes.
	* linux-x86-low.c: Fix common/ includes.
	* linux-low.c: Fix common/ includes.
	* inferiors.h: Fix common/ includes.
	* i387-fp.c: Fix common/ includes.
	* hostio.c: Fix common/ includes.
	* hostio-errno.c: Fix common/ includes.
	* gdbthread.h: Fix common/ includes.
	* gdbreplay.c: Fix common/ includes.
	* fork-child.c: Fix common/ includes.
	* event-loop.c: Fix common/ includes.
	* ax.c:
	(enum gdb_agent_op): Fix common/ includes.
 2019-01-25 15:28:16 -07:00
Philippe Waroquiers
b6fb1ee51c Fix leak in event-top.c history expansion 
E.g. in gdb.base/default.exp, valgrind detects leaks such as
==17663== 1,438 bytes in 101 blocks are definitely lost in loss record 2,804 of 2,884
==17663==    at 0x4C2BE6D: malloc (vg_replace_malloc.c:309)
==17663==    by 0x418A17: xmalloc (common-utils.c:44)
==17663==    by 0x4E6F19C: history_expand (histexpand.c:1061)
==17663==    by 0x4B4490: handle_line_of_input(buffer*, char const*, int, char const*) (event-top.c:685)
==17663==    by 0x4B4562: command_line_handler(std::unique_ptr<char, gdb::xfree_deleter<char> >&&) (event-top.c:753)
...

Fix the leak by using an unique_xmalloc_ptr for history_value.

gdb/ChangeLog
2019-01-22  Philippe Waroquiers  <philippe.waroquiers@skynet.be>

	* event-top.c (handle_line_of_input): use unique_xmalloc_ptr for
	history_value.
 2019-01-21 21:19:13 +01:00
Joel Brobecker
42a4f53d2b Update copyright year range in all GDB files. 
This commit applies all changes made after running the gdb/copyright.py
script.

Note that one file was flagged by the script, due to an invalid
copyright header
(gdb/unittests/basic_string_view/element_access/char/empty.cc).
As the file was copied from GCC's libstdc++-v3 testsuite, this commit
leaves this file untouched for the time being; a patch to fix the header
was sent to gcc-patches first.

gdb/ChangeLog:

	Update copyright year range in all GDB files.
 2019-01-01 10:01:51 +04:00
Tom Tromey
95bc9f0bf0 Change input_handler to take a unique_xmalloc_ptr 
This changes ui::input_handler to take a unique_xmalloc_ptr.  This
clarifies the ownership transfer of input_handler's argument.

gdb/ChangeLog
2018-12-30  Tom Tromey  <tom@tromey.com>

	* event-top.h (command_line_handler): Update.
	* top.c (class gdb_readline_wrapper_cleanup) <m_handler_orig>:
	Update.
	(gdb_readline_wrapper_line): Update.
	* top.h (struct ui) <input_handler>: Take a unique_xmalloc_ptr.
	(handle_line_of_input): Update.
	* event-top.c: Update.
	(gdb_readline_no_editing_callback): Update.
	(command_line_handler): Take a unique_xmalloc_ptr.
	(handle_line_of_input): Take a const char *.
	(command_line_append_input_line): Take a const char *.
 2018-12-30 08:54:13 -07:00
Tom Tromey
76727919ce Convert observers to C++ 
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.
 2018-03-19 09:37:49 -06:00
Joel Brobecker
e2882c8578 Update copyright year range in all GDB files 
gdb/ChangeLog:

        Update copyright year range in all GDB files
 2018-01-02 07:38:06 +04:00
Joel Brobecker
9937536c23 fix "server" command prefix handling (unexpected confirmation queries) 
The "server" command prefix no longer turns confirmation queries off.
We can reproduce this with any program by tring to delete all breakpoints,
for instance:

    (gdb) break main
    Breakpoint 1 at 0x40049b: file /[...]/break-fun-addr1.c, line 21.
    (gdb) server delete breakpoints
    Delete all breakpoints? (y or n)

GDB should not be asking "Delete all breakpoints? (y or n)", but
instead just delete all breakpoints without asking for confirmation.

Looking at utils.c::defaulted_query gives a glimpse of how this feature
is expected to work:

  /* Automatically answer the default value if the user did not want
     prompts or the command was issued with the server prefix.  */
  if (!confirm || server_command)
    return def_value;

So, it relies on the server_command global to be set when the "server "
command prefix is used, which is no longer the case since the following
commit:

    commit b69d38afde
    Date:   Wed Mar 9 18:25:00 2016 +0000
    Subject: Command line input handling TLC

The patch was simplifying the handling for the command line, and
I believe there was just a small oversight of removing the setting
of the server_command global.

This patch restores that, and adds a testcase to make sure we test
that feature.

gdb/ChangeLog:

        * event-top.c (handle_line_of_input): Set server_command.

gdb/testsuite/ChangeLog:

        * gdb.base/server-del-break.c: New file.
        * gdb.base/server-del-break.exp: New file.

Tested on x86_64-linux, no regression.
 2017-12-12 22:23:19 -05:00
Tom Tromey
95a6b0a106 Constify execute_command 
This constifies execute_command and fixes up the callers.

gdb/ChangeLog
2017-11-07  Tom Tromey  <tom@tromey.com>

	* event-top.h (command_handler): Constify.
	* record-full.c (cmd_record_full_start): Update.
	* thread.c (thread_apply_all_command): Update.
	* printcmd.c (eval_command): Update.
	* mi/mi-main.c (mi_execute_cli_command): Update.
	(mi_execute_async_cli_command): Update.
	* tui/tui-stack.c (tui_update_command): Update.
	* cli/cli-interp.c (safe_execute_command): Constify.
	* record.c (record_start): Update.
	(record_start, record_stop, cmd_record_start): Update.
	* record-btrace.c (cmd_record_btrace_bts_start): Update.
	(cmd_record_btrace_pt_start): Update.
	(cmd_record_btrace_start): Update.
	(cmd_record_btrace_start): Update.
	* reverse.c (exec_reverse_once): Update.
	* python/python.c (execute_gdb_command): Don't copy the command.
	* event-top.c (command_line_handler): Update.
	(command_handler): Constify.
	* defs.h (deprecated_call_command_hook): Constify.
	* cli/cli-script.h (execute_user_command): Constify.
	* cli/cli-script.c (execute_user_command): Constify.
	(execute_cmd_pre_hook, execute_cmd_post_hook): Constify.
	(enum command_control_type): Update.
	* main.c (catch_command_errors): Remove non-const overload.
	(catch_command_errors_ftype): Remove.
	* python/py-cmd.c (cmdpy_function): Constify.
	* guile/scm-cmd.c (cmdscm_function): Constify.
	* cli/cli-dump.c (call_dump_func): Constify.
	* cli/cli-decode.c (do_const_cfunc): Constify.
	(do_sfunc): Constify.
	(cmd_func): Constify.
	* gdbcmd.h (execute_command, execute_command_to_string): Constify.
	* top.h (execute_command): Constify.
	* top.c (execute_command): Constify.
	(execute_command_to_string): Constify.
	(deprecated_call_command_hook): Constify.
	* command.h (cmd_func): Constify.
	* cli/cli-decode.h (struct cmd_list_element) <func>: Constify.
 2017-11-07 13:59:09 -07:00
Pedro Alves
6aa899ce25 Eliminate STOP_SIGNAL, use SIGTSTP directly 
The STOP_SIGNAL macro was originally added for Convex Unix
(https://en.wikipedia.org/wiki/Convex_Computer).

In:

  git show 7a67dd45ca1c:gdb/m-convex.h

we see:

~~~
  /* Use SIGCONT rather than SIGTSTP because convex Unix occasionally
     turkeys SIGTSTP.  I think.  */

  #define STOP_SIGNAL SIGCONT
~~~

That's gdb-3.5, 1990...  In gdb/ChangeLog-3.x we see:

~~~
Tue Apr 18 13:43:37 1989  Randall Smith  (randy at apple-gunkies.ai.mit.edu)

        Various changes involved in 1) getting gdb to work on the convex,
	[...]
        Made whatever signal indicates a stop configurable (via macro
        STOP_SIGNAL).
        (main): Setup use of above as a signal handler.  Added check for
        "-nw" in args already processed.
        (command_line_input): SIGTSTP ==>STOP_SIGNAL.
~~~

Support for Convex Unix is long gone, and nothing else overrides
STOP_SIGNAL.  So just use SIGTSTP directly, removing a little
obfuscation.

(I don't really understand why we override [1] readline's SIGTSTP
handler (only) when reading scripts (and then fail to restore it
properly, assuming SIG_DFL...), but I'll leave that for another pass.

[1] - Actually, starting with readline 6.3, readline is no longer
installing its handlers while GDB is in control...)

gdb/ChangeLog:
2017-11-06  Pedro Alves  <palves@redhat.com>

	* event-top.c: Check SIGTSTP instead of STOP_SIGNAL thoughout.
	(async_init_signals): Adjust.
	(handle_stop_sig): Rename to ...
	(handle_sigtstp): ... this.
	(async_stop_sig): Rename to ...
	(async_sigtstp_handler): ... this, and delete STOP_SIGNAL !=
	SIGTSTP path.
	* event-top.h: Move signal.h include to the top.  Check SIGTSTP
	instead of STOP_SIGNAL thoughout.
	(handle_stop_sig): Rename to ...
	(handle_sigtstp): ... this.
	* top.c (command_line_input): Replace STOP_SIGNAL -> SIGTSTP.
 2017-11-06 16:13:05 +00:00
Tom Tromey
895b8f306b Remove make_delete_ui_cleanup 
This removes new_ui and delete_ui in favor of ordinary 'new' and
'delete', and then removes make_delete_ui_cleanup in favor of
std::unique_ptr.

2017-10-03  Tom Tromey  <tom@tromey.com>

	* event-top.c (stdin_event_handler): Update.
	* main.c (captured_main_1): Update.
	* top.h (make_delete_ui_cleanup): Remove.
	(struct ui): Add constructor and destructor.
	(new_ui, delete_ui): Remove.
	* top.c (make_delete_ui_cleanup): Remove.
	(new_ui_command): Use std::unique_ptr.
	(delete_ui_cleanup): Remove.
	(ui::ui): Rename from new_ui.  Update.
	(free_ui): Remove.
	(ui::~ui): Rename from delete_ui.  Update.
 2017-10-03 05:33:47 -06:00
Tom Tromey
606aae8a73 Remove cleanup from display_gdb_prompt 
This removes a cleanup from display_gdb_prompt by using std::string.

gdb/ChangeLog
2017-09-29  Tom Tromey  <tom@tromey.com>

	* event-top.c (top_level_prompt): Return std::string.
	(display_gdb_prompt): Update.
 2017-09-29 20:46:43 -06:00
Tom Tromey
223ffa714c Remove make_cleanup_restore_target_terminal 
This removes make_cleanup_restore_target_terminal and generally
C++-ifies target terminal handling.  It changes all target_terminal_*
functions to be static members of a new target_terminal class and
changes the cleanup to be a scoped_* class.
make_cleanup_override_quit_handler is also removed in favor of simply
using scoped_restore.

Note that there are some files in this patch that I could not compile.
Considering that some of the rewrites were automated, and that none of
these files involed cleanups, I feel that this is relatively safe.

Regression tested by the buildbot.

gdb/ChangeLog
2017-09-20  Tom Tromey  <tom@tromey.com>

	* windows-nat.c (get_windows_debug_event, windows_wait)
	(do_initial_windows_stuff, windows_attach): Update.
	* utils.c (vwarning, internal_vproblem): Update.
	(ui_unregister_input_event_handler_cleanup)
	(prepare_to_handle_input): Remove.
	(class scoped_input_handler): New.
	(defaulted_query, prompt_for_continue): Update.
	* tui/tui-hooks.c (tui_refresh_frame_and_register_information):
	Update.
	* top.c (undo_terminal_modifications_before_exit): Update.
	* target/target.h (target_terminal_init, target_terminal_inferior)
	(target_terminal_ours): Don't declare.
	(class target_terminal): New.
	* target.h (target_terminal_is_inferior, target_terminal_is_ours)
	(target_terminal_ours_for_output)
	(make_cleanup_restore_target_terminal): Don't declare.
	(target_terminal_info): Remove.
	* target.c (enum terminal_state, terminal_state): Remove.
	(target_terminal::terminal_state): Define.
	(target_terminal::init): Rename from target_terminal_init.
	(target_terminal::inferior): Rename from
	target_terminal_inferior.
	(target_terminal::ours): Rename from target_terminal_ours.
	(target_terminal::ours_for_output): Rename from
	target_terminal_ours_for_output.
	(target_terminal::info): New method.
	(cleanup_restore_target_terminal)
	(make_cleanup_restore_target_terminal): Remove.
	* solib.c (handle_solib_event): Update.
	* remote.c (remote_serial_quit_handler): Update.
	(remote_terminal_inferior, remote_wait_as): Update.
	* record-full.c (record_full_wait_1): Update.
	* nto-procfs.c (procfs_create_inferior): Update.
	* nat/fork-inferior.c (startup_inferior): Update.
	* mi/mi-interp.c (mi_new_thread, mi_thread_exit)
	(mi_record_changed, mi_inferior_added, mi_inferior_appeared)
	(mi_inferior_exit, mi_inferior_removed, mi_traceframe_changed)
	(mi_tsv_created, mi_tsv_deleted, mi_tsv_modified)
	(mi_breakpoint_created, mi_breakpoint_deleted)
	(mi_breakpoint_modified, mi_on_resume, mi_solib_loaded)
	(mi_solib_unloaded, mi_command_param_changed, mi_memory_changed)
	(mi_user_selected_context_changed, report_initial_inferior):
	Update.
	* linux-nat.c (linux_nat_attach, linux_nat_terminal_ours)
	(linux_nat_terminal_inferior): Update.
	* infrun.c (follow_fork_inferior)
	(handle_vfork_child_exec_or_exit, do_target_resume)
	(check_curr_ui_sync_execution_done, handle_inferior_event_1)
	(handle_signal_stop, maybe_remove_breakpoints, normal_stop):
	Update.
	* inflow.c (child_terminal_init, info_terminal_command): Update.
	* infcmd.c (post_create_inferior, continue_1, prepare_one_step)
	(attach_command): Update.
	* infcall.c (call_thread_fsm_should_stop): Update.
	* gnu-nat.c (gnu_attach): Update.
	* extension.c (struct active_ext_lang_state)
	(restore_active_ext_lang): Update.
	* exceptions.c (print_flush): Update.
	* event-top.c (async_enable_stdin, default_quit_handler): Update.
	(struct quit_handler_cleanup_data, restore_quit_handler)
	(restore_quit_handler_dtor, make_cleanup_override_quit_handler):
	Remove.
	* cp-support.c (gdb_demangle): Update.
	* breakpoint.c (update_inserted_breakpoint_locations)
	(insert_breakpoint_locations, handle_jit_event)
	(disable_breakpoints_in_unloaded_shlib): Update.
	* annotate.c (annotate_breakpoints_invalid)
	(annotate_frames_invalid): Update.

gdb/gdbserver/ChangeLog
2017-09-20  Tom Tromey  <tom@tromey.com>

	* target.c (target_terminal::terminal_state): Define.
	(target_terminal::init): Rename from target_terminal_init.
	(target_terminal::inferior): Rename from
	target_terminal_inferior.
	(target_terminal::ours): Rename from target_terminal_ours.
	(target_terminal::ours_for_output, target_terminal::info): New.
 2017-09-20 16:09:50 -06:00
Pedro Alves
a121b7c1ac -Wwrite-strings: The Rest 
This is the remainder boring constification that all looks more of less
borderline obvious IMO.

gdb/ChangeLog:
2017-04-05  Pedro Alves  <palves@redhat.com>

	* ada-exp.y (yyerror): Constify.
	* ada-lang.c (bound_name, get_selections)
	(ada_variant_discrim_type)
	(ada_variant_discrim_name, ada_value_struct_elt)
	(ada_lookup_struct_elt_type, is_unchecked_variant)
	(ada_which_variant_applies, standard_exc, ada_get_next_arg)
	(catch_ada_exception_command_split)
	(catch_ada_assert_command_split, catch_assert_command)
	(ada_op_name): Constify.
	* ada-lang.h (ada_yyerror, get_selections)
	(ada_variant_discrim_name, ada_value_struct_elt): Constify.
	* arc-tdep.c (arc_print_frame_cache): Constify.
	* arm-tdep.c (arm_skip_stub): Constify.
	* ax-gdb.c (gen_binop, gen_struct_ref_recursive, gen_struct_ref)
	(gen_aggregate_elt_ref): Constify.
	* bcache.c (print_bcache_statistics): Constify.
	* bcache.h (print_bcache_statistics): Constify.
	* break-catch-throw.c (catch_exception_command_1):
	* breakpoint.c (struct ep_type_description::description):
	Constify.
	(add_solib_catchpoint): Constify.
	(catch_fork_command_1): Add cast.
	(add_catch_command): Constify.
	* breakpoint.h (add_catch_command, add_solib_catchpoint):
	Constify.
	* bsd-uthread.c (bsd_uthread_state): Constify.
	* buildsym.c (patch_subfile_names): Constify.
	* buildsym.h (next_symbol_text_func, patch_subfile_names):
	Constify.
	* c-exp.y (yyerror): Constify.
	(token::oper): Constify.
	* c-lang.h (c_yyerror, cp_print_class_member): Constify.
	* c-varobj.c (cplus_describe_child): Constify.
	* charset.c (find_charset_names): Add cast.
	(find_charset_names): Constify array and add const_cast.
	* cli/cli-cmds.c (complete_command, cd_command): Constify.
	(edit_command): Constify.
	* cli/cli-decode.c (lookup_cmd): Constify.
	* cli/cli-dump.c (dump_memory_command, dump_value_command):
	Constify.
	(struct dump_context): Constify.
	(add_dump_command, restore_command): Constify.
	* cli/cli-script.c (get_command_line): Constify.
	* cli/cli-script.h (get_command_line): Constify.
	* cli/cli-utils.c (check_for_argument): Constify.
	* cli/cli-utils.h (check_for_argument): Constify.
	* coff-pe-read.c (struct read_pe_section_data): Constify.
	* command.h (lookup_cmd): Constify.
	* common/print-utils.c (decimal2str): Constify.
	* completer.c (gdb_print_filename): Constify.
	* corefile.c (set_gnutarget): Constify.
	* cp-name-parser.y (yyerror): Constify.
	* cp-valprint.c (cp_print_class_member): Constify.
	* cris-tdep.c (cris_register_name, crisv32_register_name):
	Constify.
	* d-exp.y (yyerror): Constify.
	(struct token::oper): Constify.
	* d-lang.h (d_yyerror): Constify.
	* dbxread.c (struct header_file_location::name): Constify.
	(add_old_header_file, add_new_header_file, last_function_name)
	(dbx_next_symbol_text, add_bincl_to_list)
	(find_corresponding_bincl_psymtab, set_namestring)
	(find_stab_function_addr, read_dbx_symtab, start_psymtab)
	(dbx_end_psymtab, read_ofile_symtab, process_one_symbol):
	* defs.h (command_line_input, print_address_symbolic)
	(deprecated_readline_begin_hook): Constify.
	* dwarf2read.c (anonymous_struct_prefix, dwarf_bool_name):
	Constify.
	* event-top.c (handle_line_of_input): Constify and add cast.
	* exceptions.c (catch_errors): Constify.
	* exceptions.h (catch_errors): Constify.
	* expprint.c (print_subexp_standard, op_string, op_name)
	(op_name_standard, dump_raw_expression, dump_raw_expression):
	* expression.h (op_name, op_string, dump_raw_expression):
	Constify.
	* f-exp.y (yyerror): Constify.
	(struct token::oper): Constify.
	(struct f77_boolean_val::name): Constify.
	* f-lang.c (f_word_break_characters): Constify.
	* f-lang.h (f_yyerror): Constify.
	* fork-child.c (fork_inferior): Add cast.
	* frv-tdep.c (struct gdbarch_tdep::register_names): Constify.
	(new_variant): Constify.
	* gdbarch.sh (pstring_ptr, pstring_list): Constify.
	* gdbarch.c: Regenerate.
	* gdbcore.h (set_gnutarget): Constify.
	* go-exp.y (yyerror): Constify.
	(token::oper): Constify.
	* go-lang.h (go_yyerror): Constify.
	* go32-nat.c (go32_sysinfo): Constify.
	* guile/scm-breakpoint.c (gdbscm_breakpoint_expression): Constify.
	* guile/scm-cmd.c (cmdscm_function): Constify.
	* guile/scm-param.c (pascm_param_value): Constify.
	* h8300-tdep.c (h8300_register_name, h8300s_register_name)
	(h8300sx_register_name): Constify.
	* hppa-tdep.c (hppa32_register_name, hppa64_register_name):
	Constify.
	* ia64-tdep.c (ia64_register_names): Constify.
	* infcmd.c (construct_inferior_arguments): Constify.
	(path_command, attach_post_wait): Constify.
	* language.c (show_range_command, show_case_command)
	(unk_lang_error): Constify.
	* language.h (language_defn::la_error)
	(language_defn::la_name_of_this): Constify.
	* linespec.c (decode_line_2): Constify.
	* linux-thread-db.c (thread_db_err_str): Constify.
	* lm32-tdep.c (lm32_register_name): Constify.
	* m2-exp.y (yyerror): Constify.
	* m2-lang.h (m2_yyerror): Constify.
	* m32r-tdep.c (m32r_register_names): Constify and make static.
	* m68hc11-tdep.c (m68hc11_register_names): Constify.
	* m88k-tdep.c (m88k_register_name): Constify.
	* macroexp.c (appendmem): Constify.
	* mdebugread.c (fdr_name, add_data_symbol, parse_type)
	(upgrade_type, parse_external, parse_partial_symbols)
	(mdebug_next_symbol_text, cross_ref, mylookup_symbol, new_psymtab)
	(new_symbol): Constify.
	* memattr.c (mem_info_command): Constify.
	* mep-tdep.c (register_name_from_keyword): Constify.
	* mi/mi-cmd-env.c (mi_cmd_env_path, _initialize_mi_cmd_env):
	Constify.
	* mi/mi-cmd-stack.c (list_args_or_locals): Constify.
	* mi/mi-cmd-var.c (mi_cmd_var_show_attributes): Constify.
	* mi/mi-main.c (captured_mi_execute_command): Constify and add
	cast.
	(mi_execute_async_cli_command): Constify.
	* mips-tdep.c (mips_register_name): Constify.
	* mn10300-tdep.c (register_name, mn10300_generic_register_name)
	(am33_register_name, am33_2_register_name)
	* moxie-tdep.c (moxie_register_names): Constify.
	* nat/linux-osdata.c (osdata_type): Constify fields.
	* nto-tdep.c (nto_parse_redirection): Constify.
	* objc-lang.c (lookup_struct_typedef, lookup_objc_class)
	(lookup_child_selector): Constify.
	(objc_methcall::name): Constify.
	* objc-lang.h (lookup_objc_class, lookup_child_selector)
	(lookup_struct_typedef): Constify.
	* objfiles.c (pc_in_section): Constify.
	* objfiles.h (pc_in_section): Constify.
	* p-exp.y (struct token::oper): Constify.
	(yyerror): Constify.
	* p-lang.h (pascal_yyerror): Constify.
	* parser-defs.h (op_name_standard): Constify.
	(op_print::string): Constify.
	(exp_descriptor::op_name): Constify.
	* printcmd.c (print_address_symbolic): Constify.
	* psymtab.c (print_partial_symbols): Constify.
	* python/py-breakpoint.c (stop_func): Constify.
	(bppy_get_expression): Constify.
	* python/py-cmd.c (cmdpy_completer::name): Constify.
	(cmdpy_function): Constify.
	* python/py-event.c (evpy_add_attribute)
	(gdbpy_initialize_event_generic): Constify.
	* python/py-event.h (evpy_add_attribute)
	(gdbpy_initialize_event_generic): Constify.
	* python/py-evts.c (add_new_registry): Constify.
	* python/py-finishbreakpoint.c (outofscope_func): Constify.
	* python/py-framefilter.c (get_py_iter_from_func): Constify.
	* python/py-inferior.c (get_buffer): Add cast.
	* python/py-param.c (parm_constant::name): Constify.
	* python/py-unwind.c (fprint_frame_id): Constify.
	* python/python.c (gdbpy_parameter_value): Constify.
	* remote-fileio.c (remote_fio_func_map): Make 'name' const.
	* remote.c (memory_packet_config::name): Constify.
	(show_packet_config_cmd, remote_write_bytes)
	(remote_buffer_add_string):
	* reverse.c (exec_reverse_once): Constify.
	* rs6000-tdep.c (variant::name, variant::description): Constify.
	* rust-exp.y (rustyyerror): Constify.
	* rust-lang.c (rust_op_name): Constify.
	* rust-lang.h (rustyyerror): Constify.
	* serial.h (serial_ops::name): Constify.
	* sh-tdep.c (sh_sh_register_name, sh_sh3_register_name)
	(sh_sh3e_register_name, sh_sh2e_register_name)
	(sh_sh2a_register_name, sh_sh2a_nofpu_register_name)
	(sh_sh_dsp_register_name, sh_sh3_dsp_register_name)
	(sh_sh4_register_name, sh_sh4_nofpu_register_name)
	(sh_sh4al_dsp_register_name): Constify.
	* sh64-tdep.c (sh64_register_name): Constify.
	* solib-darwin.c (lookup_symbol_from_bfd): Constify.
	* spu-tdep.c (spu_register_name, info_spu_dma_cmdlist): Constify.
	* stabsread.c (patch_block_stabs, read_type_number)
	(ref_map::stabs, ref_add, process_reference)
	(symbol_reference_defined, define_symbol, define_symbol)
	(error_type, read_type, read_member_functions, read_cpp_abbrev)
	(read_one_struct_field, read_struct_fields, read_baseclasses)
	(read_tilde_fields, read_struct_type, read_array_type)
	(read_enum_type, read_sun_builtin_type, read_sun_floating_type)
	(read_huge_number, read_range_type, read_args, common_block_start)
	(find_name_end): Constify.
	* stabsread.h (common_block_start, define_symbol)
	(process_one_symbol, symbol_reference_defined, ref_add):
	* symfile.c (get_section_index, add_symbol_file_command):
	* symfile.h (get_section_index): Constify.
	* target-descriptions.c (tdesc_type::name): Constify.
	(tdesc_free_type): Add cast.
	* target.c (find_default_run_target):
	(add_deprecated_target_alias, find_default_run_target)
	(target_announce_detach): Constify.
	(do_option): Constify.
	* target.h (add_deprecated_target_alias): Constify.
	* thread.c (print_thread_info_1): Constify.
	* top.c (deprecated_readline_begin_hook, command_line_input):
	Constify.
	(init_main): Add casts.
	* top.h (handle_line_of_input): Constify.
	* tracefile-tfile.c (tfile_write_uploaded_tsv): Constify.
	* tracepoint.c (tvariables_info_1, trace_status_mi): Constify.
	(tfind_command): Rename to ...
	(tfind_command_1): ... this and constify.
	(tfind_command): New function.
	(tfind_end_command, tfind_start_command): Adjust.
	(encode_source_string): Constify.
	* tracepoint.h (encode_source_string): Constify.
	* tui/tui-data.c (tui_partial_win_by_name): Constify.
	* tui/tui-data.h (tui_partial_win_by_name): Constify.
	* tui/tui-source.c (tui_set_source_content_nil): Constify.
	* tui/tui-source.h (tui_set_source_content_nil): Constify.
	* tui/tui-win.c (parse_scrolling_args): Constify.
	* tui/tui-windata.c (tui_erase_data_content): Constify.
	* tui/tui-windata.h (tui_erase_data_content): Constify.
	* tui/tui-winsource.c (tui_erase_source_content): Constify.
	* tui/tui.c (tui_enable): Add cast.
	* utils.c (defaulted_query): Constify.
	(init_page_info): Add cast.
	(puts_debug, subset_compare): Constify.
	* utils.h (subset_compare): Constify.
	* varobj.c (varobj_format_string): Constify.
	* varobj.h (varobj_format_string): Constify.
	* vax-tdep.c (vax_register_name): Constify.
	* windows-nat.c (windows_detach): Constify.
	* xcoffread.c (process_linenos, xcoff_next_symbol_text): Constify.
	* xml-support.c (gdb_xml_end_element): Constify.
	* xml-tdesc.c (tdesc_start_reg): Constify.
	* xstormy16-tdep.c (xstormy16_register_name): Constify.
	* xtensa-tdep.c (xtensa_find_register_by_name): Constify.
	* xtensa-tdep.h (xtensa_register_t::name): Constify.

gdb/gdbserver/ChangeLog:
2017-04-05  Pedro Alves  <palves@redhat.com>

	* gdbreplay.c (sync_error): Constify.
	* linux-x86-low.c (push_opcode): Constify.
 2017-04-05 19:21:37 +01:00
Pedro Alves
9b2eba3dcc -Wwrite-strings: execute_command calls with string literals 
This is ugly, but it's just making the uglyness explicit.

All these places would better be calling some API function directly
instead of going through execute_command & friends...

gdb/ChangeLog:
2017-04-05  Pedro Alves  <palves@redhat.com>

	* event-top.c (command_line_handler): Add cast to execute_command
	call.
	* record-btrace.c (cmd_record_btrace_bts_start)
	(cmd_record_btrace_pt_start, cmd_record_btrace_start)
	(cmd_record_btrace_start): Add cast to execute_command call.
	* record-full.c (record_full_goto_insn):
	* record.c (record_start, record_stop): Add cast to
	execute_command_to_string calls.
	(cmd_record_start): Add cast to execute_command calls.
 2017-04-05 19:21:36 +01:00
Pedro Alves
d7e747318f Eliminate make_cleanup_ui_file_delete / make ui_file a class hierarchy 
This patch starts from the desire to eliminate
make_cleanup_ui_file_delete, but then goes beyond.  It makes ui_file &
friends a real C++ class hierarchy, and switches temporary
ui_file-like objects to stack-based allocation.

- mem_fileopen -> string_file

mem_fileopen is replaced with a new string_file class that is treated
as a value class created on the stack.  This alone eliminates most
make_cleanup_ui_file_delete calls, and, simplifies code a whole lot
(diffstat shows around 1k loc dropped.)

string_file's internal buffer is a std::string, thus the "string" in
the name.  This simplifies the implementation much, compared to
mem_fileopen, which managed growing its internal buffer manually.

- ui_file_as_string, ui_file_strdup, ui_file_obsavestring all gone

The new string_file class has a string() method that provides direct
writable access to the internal std::string buffer.  This replaced
ui_file_as_string, which forced a copy of the same data the stream had
inside.  With direct access via a writable reference, we can instead
move the string out of the string_stream, avoiding deep string
copying.

Related, ui_file_xstrdup calls are replaced with xstrdup'ping the
stream's string, and ui_file_obsavestring is replaced by
obstack_copy0.

With all those out of the way, getting rid of the weird ui_file_put
mechanism was possible.

- New ui_file::printf, ui_file::puts, etc. methods

These simplify / clarify client code.  I considered splitting
client-code changes, like these, e.g.:

  -  stb = mem_fileopen ();
  -  fprintf_unfiltered (stb, "%s%s%s",
  -		      _("The valid values are:\n"),
  -		      regdesc,
  -		      _("The default is \"std\"."));
  +  string_file stb;
  +  stb.printf ("%s%s%s",
  +	      _("The valid values are:\n"),
  +	      regdesc,
  +	      _("The default is \"std\"."));

In two steps, with the first step leaving fprintf_unfiltered (etc.)
calls in place, and only afterwards do a pass to change all those to
call stb.printf etc..  I didn't do that split, because (when I tried),
it turned out to be pointless make-work: the first pass would have to
touch the fprintf_unfiltered line anyway, to replace "stb" with
"&stb".

- gdb_fopen replaced with stack-based objects

This avoids the need for cleanups or unique_ptr's.  I.e., this:

      struct ui_file *file = gdb_fopen (filename, "w");
      if (filename == NULL)
 	perror_with_name (filename);
      cleanups = make_cleanup_ui_file_delete (file);
      // use file.
      do_cleanups (cleanups);

is replaced with this:

      stdio_file file;
      if (!file.open (filename, "w"))
 	perror_with_name (filename);
      // use file.

- odd contorsions in null_file_write / null_file_fputs around when to
  call to_fputs / to_write eliminated.

- Global null_stream object

A few places that were allocating a ui_file in order to print to
"nowhere" are adjusted to instead refer to a new 'null_stream' global
stream.

- TUI's tui_sfileopen eliminated.  TUI's ui_file much simplified

The TUI's ui_file was serving a dual purpose.  It supported being used
as string buffer, and supported being backed by a stdio FILE.  The
string buffer part is gone, replaced by using of string_file.  The
'FILE *' support is now much simplified, by making the TUI's ui_file
inherit from stdio_file.

gdb/ChangeLog:
2017-02-02  Pedro Alves  <palves@redhat.com>

	* ada-lang.c (type_as_string): Use string_file.
	* ada-valprint.c (ada_print_floating): Use string_file.
	* ada-varobj.c (ada_varobj_scalar_image)
	(ada_varobj_get_value_image): Use string_file.
	* aix-thread.c (aix_thread_extra_thread_info): Use string_file.
	* arm-tdep.c (_initialize_arm_tdep): Use string_printf.
	* breakpoint.c (update_inserted_breakpoint_locations)
	(insert_breakpoint_locations, reattach_breakpoints)
	(print_breakpoint_location, print_one_detail_ranged_breakpoint)
	(print_it_watchpoint): Use string_file.
	(save_breakpoints): Use stdio_file.
	* c-exp.y (oper): Use string_file.
	* cli/cli-logging.c (set_logging_redirect): Use ui_file_up and
	tee_file.
	(pop_output_files): Use delete.
	(handle_redirections): Use stdio_file and tee_file.
	* cli/cli-setshow.c (do_show_command): Use string_file.
	* compile/compile-c-support.c (c_compute_program): Use
	string_file.
	* compile/compile-c-symbols.c (generate_vla_size): Take a
	'string_file &' instead of a 'ui_file *'.
	(generate_c_for_for_one_variable): Take a 'string_file &' instead
	of a 'ui_file *'.  Use string_file.
	(generate_c_for_variable_locations): Take a 'string_file &'
	instead of a 'ui_file *'.
	* compile/compile-internal.h (generate_c_for_for_one_variable):
	Take a 'string_file &' instead of a 'ui_file *'.
	* compile/compile-loc2c.c (push, pushf, unary, binary)
	(print_label, pushf_register_address, pushf_register)
	(do_compile_dwarf_expr_to_c): Take a 'string_file &' instead of a
	'ui_file *'.  Adjust.
	* compile/compile.c (compile_to_object): Use string_file.
	* compile/compile.h (compile_dwarf_expr_to_c)
	(compile_dwarf_bounds_to_c): Take a 'string_file &' instead of a
	'ui_file *'.
	* cp-support.c (inspect_type): Use string_file and obstack_copy0.
	(replace_typedefs_qualified_name): Use string_file and
	obstack_copy0.
	* disasm.c (gdb_pretty_print_insn): Use string_file.
	(gdb_disassembly): Adjust reference the null_stream global.
	(do_ui_file_delete): Delete.
	(gdb_insn_length): Use null_stream.
	* dummy-frame.c (maintenance_print_dummy_frames): Use stdio_file.
	* dwarf2loc.c (dwarf2_compile_property_to_c)
	(locexpr_generate_c_location, loclist_generate_c_location): Take a
	'string_file &' instead of a 'ui_file *'.
	* dwarf2loc.h (dwarf2_compile_property_to_c): Likewise.
	* dwarf2read.c (do_ui_file_peek_last): Delete.
	(dwarf2_compute_name): Use string_file.
	* event-top.c (gdb_setup_readline): Use stdio_file.
	* gdbarch.sh (verify_gdbarch): Use string_file.
	* gdbtypes.c (safe_parse_type): Use null_stream.
	* guile/scm-breakpoint.c (gdbscm_breakpoint_commands): Use
	string_file.
	* guile/scm-disasm.c (gdbscm_print_insn_from_port): Take a
	'string_file *' instead of a 'ui_file *'.
	(gdbscm_arch_disassemble): Use string_file.
	* guile/scm-frame.c (frscm_print_frame_smob): Use string_file.
	* guile/scm-ports.c (class ioscm_file_port): Now a class that
	inherits from ui_file.
	(ioscm_file_port_delete, ioscm_file_port_rewind)
	(ioscm_file_port_put): Delete.
	(ioscm_file_port_write): Rename to ...
	(ioscm_file_port::write): ... this.  Remove file_port_magic
	checks.
	(ioscm_file_port_new): Delete.
	(ioscm_with_output_to_port_worker): Use ioscm_file_port and
	ui_file_up.
	* guile/scm-type.c (tyscm_type_name): Use string_file.
	* guile/scm-value.c (vlscm_print_value_smob, gdbscm_value_print):
	Use string_file.
	* infcmd.c (print_return_value_1): Use string_file.
	* infrun.c (print_target_wait_results): Use string_file.
	* language.c (add_language): Use string_file.
	* location.c (explicit_to_string_internal): Use string_file.
	* main.c (captured_main_1): Use null_file.
	* maint.c (maintenance_print_architecture): Use stdio_file.
	* mi/mi-cmd-stack.c (list_arg_or_local): Use string_file.
	* mi/mi-common.h (struct mi_interp) <out, err, log, targ,
	event_channel>: Change type to mi_console_file pointer.
	* mi/mi-console.c (mi_console_file_fputs, mi_console_file_flush)
	(mi_console_file_delete): Delete.
	(struct mi_console_file): Delete.
	(mi_console_file_magic): Delete.
	(mi_console_file_new): Delete.
	(mi_console_file::mi_console_file): New.
	(mi_console_file_delete): Delete.
	(mi_console_file_fputs): Delete.
	(mi_console_file::write): New.
	(mi_console_raw_packet): Delete.
	(mi_console_file::flush): New.
	(mi_console_file_flush): Delete.
	(mi_console_set_raw): Rename to ...
	(mi_console_file::set_raw): ... this.
	* mi/mi-console.h (class mi_console_file): New class.
	(mi_console_file_new, mi_console_set_raw): Delete.
	* mi/mi-interp.c (mi_interpreter_init): Use mi_console_file.
	(mi_set_logging): Use delete and tee_file.  Adjust.
	* mi/mi-main.c (output_register): Use string_file.
	(mi_cmd_data_evaluate_expression): Use string_file.
	(mi_cmd_data_read_memory): Use string_file.
	(mi_cmd_execute, print_variable_or_computed): Use string_file.
	* mi/mi-out.c (mi_ui_out::main_stream): New.
	(mi_ui_out::rewind): Use main_stream and
	string_file.
	(mi_ui_out::put): Use main_stream and string_file.
	(mi_ui_out::mi_ui_out): Remove 'stream' parameter.
	Allocate a 'string_file' instead.
	(mi_out_new): Don't allocate a mem_fileopen stream here.
	* mi/mi-out.h (mi_ui_out::mi_ui_out): Remove 'stream' parameter.
	(mi_ui_out::main_stream): Declare method.
	* printcmd.c (eval_command): Use string_file.
	* psymtab.c (maintenance_print_psymbols): Use stdio_file.
	* python/py-arch.c (archpy_disassemble): Use string_file.
	* python/py-breakpoint.c (bppy_get_commands): Use string_file.
	* python/py-frame.c (frapy_str): Use string_file.
	* python/py-framefilter.c (py_print_type, py_print_single_arg):
	Use string_file.
	* python/py-type.c (typy_str): Use string_file.
	* python/py-unwind.c (unwind_infopy_str): Use string_file.
	* python/py-value.c (valpy_str): Use string_file.
	* record-btrace.c (btrace_insn_history): Use string_file.
	* regcache.c (regcache_print): Use stdio_file.
	* reggroups.c (maintenance_print_reggroups): Use stdio_file.
	* remote.c (escape_buffer): Use string_file.
	* rust-lang.c (rust_get_disr_info): Use string_file.
	* serial.c (serial_open_ops_1): Use stdio_file.
	(do_serial_close): Use delete.
	* stack.c (print_frame_arg): Use string_file.
	(print_frame_args): Remove local mem_fileopen stream, not used.
	(print_frame): Use string_file.
	* symmisc.c (maintenance_print_symbols): Use stdio_file.
	* symtab.h (struct symbol_computed_ops) <generate_c_location>:
	Take a 'string_file *' instead of a 'ui_file *'.
	* top.c (new_ui): Use stdio_file and stderr_file.
	(free_ui): Use delete.
	(execute_command_to_string): Use string_file.
	(quit_confirm): Use string_file.
	* tracepoint.c (collection_list::append_exp): Use string_file.
	* tui/tui-disasm.c (tui_disassemble): Use string_file.
	* tui/tui-file.c: Don't include "ui-file.h".
	(enum streamtype, struct tui_stream): Delete.
	(tui_file_new, tui_file_delete, tui_fileopen, tui_sfileopen)
	(tui_file_isatty, tui_file_rewind, tui_file_put): Delete.
	(tui_file::tui_file): New method.
	(tui_file_fputs): Delete.
	(tui_file_get_strbuf): Delete.
	(tui_file::puts): New method.
	(tui_file_adjust_strbuf): Delete.
	(tui_file_flush): Delete.
	(tui_file::flush): New method.
	* tui/tui-file.h: Tweak intro comment.
	Include ui-file.h.
	(tui_fileopen, tui_sfileopen, tui_file_get_strbuf)
	(tui_file_adjust_strbuf): Delete declarations.
	(class tui_file): New class.
	* tui/tui-io.c (tui_initialize_io): Use tui_file.
	* tui/tui-regs.c (tui_restore_gdbout): Use delete.
	(tui_register_format): Use string_stream.
	* tui/tui-stack.c (tui_make_status_line): Use string_file.
	(tui_get_function_from_frame): Use string_file.
	* typeprint.c (type_to_string): Use string_file.
	* ui-file.c (struct ui_file, ui_file_magic, ui_file_new): Delete.
	(null_stream): New global.
	(ui_file_delete): Delete.
	(ui_file::ui_file): New.
	(null_file_isatty): Delete.
	(ui_file::~ui_file): New.
	(null_file_rewind): Delete.
	(ui_file::printf): New.
	(null_file_put): Delete.
	(null_file_flush): Delete.
	(ui_file::putstr): New.
	(null_file_write): Delete.
	(ui_file::putstrn): New.
	(null_file_read): Delete.
	(ui_file::putc): New.
	(null_file_fputs): Delete.
	(null_file_write_async_safe): Delete.
	(ui_file::vprintf): New.
	(null_file_delete): Delete.
	(null_file::write): New.
	(null_file_fseek): Delete.
	(null_file::puts): New.
	(ui_file_data): Delete.
	(null_file::write_async_safe): New.
	(gdb_flush, ui_file_isatty): Adjust.
	(ui_file_put, ui_file_rewind): Delete.
	(ui_file_write): Adjust.
	(ui_file_write_for_put): Delete.
	(ui_file_write_async_safe, ui_file_read): Adjust.
	(ui_file_fseek): Delete.
	(fputs_unfiltered): Adjust.
	(set_ui_file_flush, set_ui_file_isatty, set_ui_file_rewind)
	(set_ui_file_put, set_ui_file_write, set_ui_file_write_async_safe)
	(set_ui_file_read, set_ui_file_fputs, set_ui_file_fseek)
	(set_ui_file_data): Delete.
	(string_file::~string_file, string_file::write)
	(struct accumulated_ui_file, do_ui_file_xstrdup, ui_file_xstrdup)
	(do_ui_file_as_string, ui_file_as_string): Delete.
	(do_ui_file_obsavestring, ui_file_obsavestring): Delete.
	(struct mem_file): Delete.
	(mem_file_new): Delete.
	(stdio_file::stdio_file): New.
	(mem_file_delete): Delete.
	(stdio_file::stdio_file): New.
	(mem_fileopen): Delete.
	(stdio_file::~stdio_file): New.
	(mem_file_rewind): Delete.
	(stdio_file::set_stream): New.
	(mem_file_put): Delete.
	(stdio_file::open): New.
	(mem_file_write): Delete.
	(stdio_file_magic, struct stdio_file): Delete.
	(stdio_file_new, stdio_file_delete, stdio_file_flush): Delete.
	(stdio_file::flush): New.
	(stdio_file_read): Rename to ...
	(stdio_file::read): ... this.  Adjust.
	(stdio_file_write): Rename to ...
	(stdio_file::write): ... this.  Adjust.
	(stdio_file_write_async_safe): Rename to ...
	(stdio_file::write_async_safe) ... this.  Adjust.
	(stdio_file_fputs): Rename to ...
	(stdio_file::puts) ... this.  Adjust.
	(stdio_file_isatty): Delete.
	(stdio_file_fseek): Delete.
	(stdio_file::isatty): New.
	(stderr_file_write): Rename to ...
	(stderr_file::write) ... this.  Adjust.
	(stderr_file_fputs): Rename to ...
	(stderr_file::puts) ... this.  Adjust.
	(stderr_fileopen, stdio_fileopen, gdb_fopen): Delete.
	(stderr_file::stderr_file): New.
	(tee_file_magic): Delete.
	(struct tee_file): Delete.
	(tee_file::tee_file): New.
	(tee_file_new): Delete.
	(tee_file::~tee_file): New.
	(tee_file_delete): Delete.
	(tee_file_flush): Rename to ...
	(tee_file::flush): ... this.  Adjust.
	(tee_file_write): Rename to ...
	(tee_file::write): ... this.  Adjust.
	(tee_file::write_async_safe): New.
	(tee_file_fputs): Rename to ...
	(tee_file::puts): ... this.  Adjust.
	(tee_file_isatty): Rename to ...
	(tee_file::isatty): ... this.  Adjust.
	* ui-file.h (struct obstack, struct ui_file): Don't
	forward-declare.
	(ui_file_new, ui_file_flush_ftype, set_ui_file_flush)
	(ui_file_write_ftype)
	(set_ui_file_write, ui_file_fputs_ftype, set_ui_file_fputs)
	(ui_file_write_async_safe_ftype, set_ui_file_write_async_safe)
	(ui_file_read_ftype, set_ui_file_read, ui_file_isatty_ftype)
	(set_ui_file_isatty, ui_file_rewind_ftype, set_ui_file_rewind)
	(ui_file_put_method_ftype, ui_file_put_ftype, set_ui_file_put)
	(ui_file_delete_ftype, set_ui_file_data, ui_file_fseek_ftype)
	(set_ui_file_fseek): Delete.
	(ui_file_data, ui_file_delete, ui_file_rewind)
	(struct ui_file): New.
	(ui_file_up): New.
	(class null_file): New.
	(null_stream): Declare.
	(ui_file_write_for_put, ui_file_put): Delete.
	(ui_file_xstrdup, ui_file_as_string, ui_file_obsavestring):
	Delete.
	(ui_file_fseek, mem_fileopen, stdio_fileopen, stderr_fileopen)
	(gdb_fopen, tee_file_new): Delete.
	(struct string_file): New.
	(struct stdio_file): New.
	(stdio_file_up): New.
	(struct stderr_file): New.
	(class tee_file): New.
	* ui-out.c (ui_out::field_stream): Take a 'string_file &' instead
	of a 'ui_file *'.  Adjust.
	* ui-out.h (class ui_out) <field_stream>: Likewise.
	* utils.c (do_ui_file_delete, make_cleanup_ui_file_delete)
	(null_stream): Delete.
	(error_stream): Take a 'string_file &' instead of a 'ui_file *'.
	Adjust.
	* utils.h (struct ui_file): Delete forward declaration..
	(make_cleanup_ui_file_delete, null_stream): Delete declarations.
	(error_stream): Take a 'string_file &' instead of a
	'ui_file *'.
	* varobj.c (varobj_value_get_print_value): Use string_file.
	* xtensa-tdep.c (xtensa_verify_config): Use string_file.
	* gdbarch.c: Regenerate.
 2017-02-02 11:11:47 +00:00
Joel Brobecker
61baf725ec update copyright year range in GDB files 
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.
 2017-01-01 10:52:34 +04:00
Pedro Alves
2693a26216 Fix longjmp across readline w/ --enable-sjlj-exceptions toolchains 
Nowadays, GDB propagates C++ exceptions across readline using
setjmp/longjmp 89525768cd ("Propagate GDB/C++ exceptions across
readline using sj/lj-based TRY/CATCH") because DWARF-based unwinding
can't cross C functions compiled without -fexceptions (see details
from the commit above).

Unfortunately, toolchains that use SjLj-based C++ exceptions got
broken with that fix, because _Unwind_SjLj_Unregister, which is put at
the exit of a function, is not executed due to the longjmp added by
that commit.

 (gdb) [New Thread 2936.0xb80]
 kill

 Thread 1 received signal SIGSEGV, Segmentation fault.
 0x03ff662b in ?? ()
 top?bt 15
 #0  0x03ff662b in ?? ()
 #1  0x00526b92 in stdin_event_handler (error=0, client_data=0x172ed8)
    at ../../binutils-gdb/gdb/event-top.c:555
 #2  0x00525a94 in handle_file_event (ready_mask=<optimized out>,
    file_ptr=0x3ff5cb8) at ../../binutils-gdb/gdb/event-loop.c:733
 #3  gdb_wait_for_event (block=block@entry=1)
    at ../../binutils-gdb/gdb/event-loop.c:884
 #4  0x00525bfb in gdb_do_one_event ()
    at ../../binutils-gdb/gdb/event-loop.c:347
 #5  0x00525ce5 in start_event_loop ()
    at ../../binutils-gdb/gdb/event-loop.c:371
 #6  0x0051fada in captured_command_loop (data=0x0)
    at ../../binutils-gdb/gdb/main.c:324
 #7  0x0051cf5d in catch_errors (
    func=func@entry=0x51fab0 <captured_command_loop(void*)>,
    func_args=func_args@entry=0x0,
    errstring=errstring@entry=0x7922bf <VEC_interp_factory_p_quick_push(VEC_inte rp_factory_p*, interp_factory*, char const*, unsigned int)::__PRETTY_FUNCTION__+351> "", mask=mask@entry=RETURN_MASK_ALL)
    at ../../binutils-gdb/gdb/exceptions.c:236
 #8  0x00520f0c in captured_main (data=0x328feb4)
    at ../../binutils-gdb/gdb/main.c:1149
 #9  gdb_main (args=args@entry=0x328feb4) at ../../binutils-gdb/gdb/main.c:1159
 #10 0x0071e400 in main (argc=1, argv=0x171220)
    at ../../binutils-gdb/gdb/gdb.c:32

Fix this by making the functions involved in setjmp/longjmp as
noexcept, so that the compiler knows it doesn't need to emit the
_Unwind_SjLj_Register / _Unwind_SjLj_Unregister calls for C++
exceptions.

Tested on x86_64 Fedora 23 with:
 - GCC 5.3.1 w/ DWARF-based exceptions.
 - GCC 7 built with --enable-sjlj-exceptions.

gdb/ChangeLog:
2016-12-20  Pedro Alves  <palves@redhat.com>
	    Yao Qi  <yao.qi@linaro.org>

	PR gdb/20977
	* event-top.c (gdb_rl_callback_read_char_wrapper_noexcept): New
	noexcept function, factored out from ...
	(gdb_rl_callback_read_char_wrapper): ... this.
	(gdb_rl_callback_handler): Mark noexcept.
 2016-12-20 15:46:44 +00:00
Tom Tromey
1e3b796d58 Change command stats reporting to use class 
This removes make_command_stats_cleanup in favor of an RAII class.
The patch is reasonably straightforward, but keeping the same
semantics without excessive reindentation required splitting
captured_main in two.

2016-10-21  Tom Tromey  <tom@tromey.com>

	* maint.h (scoped_command_stats): New class.
	(make_command_stats_cleanup): Don't declare.
	* maint.c (struct cmd_stats): Remove.
	(~scoped_command_stats): Rename from report_command_stats.  Now a
	destructor.
	(scoped_command_stats): Rename from make_command_stats_cleanup.
	Now a constructor.
	* main.c (captured_main_1): New function.  Use
	scoped_command_stats.
	(captured_main): Call captured_main_1.
	* event-top.c (command_handler): Use scoped_command_stats.
 2016-10-21 14:17:35 -06:00
Tom Tromey
0e454242cc Remove make_cleanup_restore_current_ui 
This removes make_cleanup_restore_current_ui by converting the last
use.  The last use was in a few functions used to iterate over all
UIs.  This patch replaces these functions with a class, and arranges
for the class destructor to do the needed cleanup.

2016-10-21  Tom Tromey  <tom@tromey.com>

	* tui/tui-interp.c (tui_on_normal_stop, tui_on_signal_received)
	(tui_on_end_stepping_range, tui_on_signal_exited, tui_on_exited)
	(tui_on_no_history, tui_on_user_selected_context_changed):
	Update.
	* top.h (switch_thru_all_uis): New class.
	(SWITCH_THRU_ALL_UIS): Rewrite.
	(make_cleanup_restore_current_ui, switch_thru_all_uis_init)
	(switch_thru_all_uis_cond, switch_thru_all_uis_next): Don't
	declare.
	* mi/mi-interp.c (mi_new_thread, mi_thread_exit)
	(mi_record_changed, mi_inferior_added, mi_inferior_appeared)
	(mi_inferior_exit, mi_inferior_removed, mi_on_signal_received)
	(mi_on_end_stepping_range, mi_on_signal_exited, mi_on_exited)
	(mi_on_no_history, mi_on_normal_stop, mi_traceframe_changed)
	(mi_tsv_created, mi_tsv_deleted, mi_tsv_modified)
	(mi_breakpoint_created, mi_breakpoint_deleted)
	(mi_breakpoint_modified, mi_output_running_pid, mi_on_resume)
	(mi_solib_loaded, mi_solib_unloaded, mi_command_param_changed)
	(mi_memory_changed, mi_user_selected_context_changed): Update.
	* infrun.c (all_uis_check_sync_execution_done)
	(all_uis_on_sync_execution_starting, normal_stop): Update.
	* event-top.c (restore_ui_cleanup)
	(make_cleanup_restore_current_ui, switch_thru_all_uis_init)
	(switch_thru_all_uis_cond, switch_thru_all_uis_next): Remove.
	* cli/cli-interp.c (cli_on_normal_stop, cli_on_signal_received)
	(cli_on_end_stepping_range, cli_on_signal_exited, cli_on_exited)
	(cli_on_no_history, cli_on_user_selected_context_changed):
	Update.
	* breakpoint.c (watchpoint_check): Update.
 2016-10-21 14:17:34 -06:00
Pedro Alves
a025b477cc Introduce make_cleanup_restore_current_ui 
Just a tidy, no functional changes.

gdb/ChangeLog:
2016-09-06  Pedro Alves  <palves@redhat.com>

	* event-top.c (restore_ui_cleanup): Now static.
	(make_cleanup_restore_current_ui): New function.
	(switch_thru_all_uis_init): Use it.
	* infcall.c (call_thread_fsm_should_stop): Use it.
	* infrun.c (fetch_inferior_event): Use it.
	* top.c (new_ui_command): Use it.
	* top.h (restore_ui_cleanup): Delete declaration.
	(make_cleanup_restore_current_ui): New declaration.
 2016-09-06 23:17:14 +01:00
Pedro Alves
3eb7562a98 Fix PR gdb/20418 - Problems with synchronous commands and new-ui 
When executing commands on a secondary UI running the MI interpreter,
some commands that should be synchronous are not.  MI incorrectly
continues processing input right after the synchronous command is
sent, before the target stops.

The problem happens when we emit MI async events (=library-loaded,
etc.), and we go about restoring the previous terminal state, we end
up calling target_terminal_ours, which incorrectly always installs the
current UI's input_fd in the event loop...  That is, code like this:

   old_chain = make_cleanup_restore_target_terminal ();
   target_terminal_ours_for_output ();

   fprintf_unfiltered (mi->event_channel, "library-loaded");

...

   do_cleanups (old_chain);

The fix is to move the add_file_handler/delete_file_handler calls out
of target_terminal_$foo, making these completely no-ops unless called
with the main UI as current UI.

gdb/ChangeLog:
2016-08-09  Pedro Alves  <palves@redhat.com>

	PR gdb/20418
	* event-top.c (ui_register_input_event_handler)
	(ui_unregister_input_event_handler): New functions.
	(async_enable_stdin): Register input in the event loop.
	(async_disable_stdin): Unregister input from the event loop.
	(gdb_setup_readline): Register input in the event loop.
	* infrun.c (check_curr_ui_sync_execution_done): Register input in
	the event loop.
	* target.c (target_terminal_inferior): Don't unregister input from
	the event loop.
	(target_terminal_ours): Don't register input in the event loop.
	* target.h (target_terminal_inferior)
	(target_terminal_ours_for_output, target_terminal_ours): Update
	comments.
	* top.h (ui_register_input_event_handler)
	(ui_unregister_input_event_handler): New declarations.
	* utils.c (ui_unregister_input_event_handler_cleanup)
	(prepare_to_handle_input): New functions.
	(defaulted_query, prompt_for_continue): Use
	prepare_to_handle_input.

gdb/testsuite/ChangeLog:
2016-08-09  Pedro Alves  <palves@redhat.com>
	    Simon Marchi  <simon.marchi@ericsson.com>

	PR gdb/20418
	* gdb.mi/new-ui-mi-sync.c, gdb.mi/new-ui-mi-sync.exp: New files.
	* lib/mi-support.exp (mi_expect_interrupt): Remove anchors.
 2016-08-09 22:50:45 +01:00
Pedro Alves
268a799a45 Make stdin be per UI 
This commit makes each UI have its own "stdin" stream pointer.  This
is used to determine whether the "from_tty" argument to
execute_command, etc. should be true.

Related, this commit makes input_from_terminal_p take an UI parameter,
and then avoids the gdb_has_a_terminal in it.  gdb_has_a_terminal only
returns info on gdb's own main/primary terminal (the real stdin).
However, the places that call input_from_terminal_p really want to
know is whether the command came from an interactive tty.  This patch
thus renames input_from_terminal_p to input_interactive_p for clarity,
and then makes input_interactive_p check for "set interactive" itself,
along with ISATTY, instead of calling gdb_has_a_terminal.  Actually,
quit_force wants to call input_interactive_p _after_ stdin is closed,
we can't call ISATTY that late.  So instead we save the result of
ISATTY in a field of the UI.

gdb/ChangeLog:
2016-06-21  Pedro Alves  <palves@redhat.com>

	* cli/cli-script.c (read_next_line): Adjust to per-UI stdin.
	(read_command_lines): Use input_interactive_p instead of
	input_from_terminal_p.
	* defs.h (struct ui): Forward declare.
	(input_from_terminal_p): Rename to ...
	(input_interactive_p): ... this.
	* event-top.c (stdin_event_handler): Pass 0 as from_tty argument
	to quit_command.
	(command_handler): Adjust to per-UI stdin.
	(handle_line_of_input): Adjust to per-UI stdin and use
	input_interactive_p instead of ISATTY and input_from_terminal_p.
	(gdb_readline_no_editing_callback): Adjust to per-UI stdin.
	(command_line_handler): Always pass true as "from_tty" parameter
	of handle_line_of_input and execute_command.
	(async_sigterm_handler): Pass 0 as from_tty argument to
	quit_command.
	* inflow.c (interactive_mode, show_interactive_mode): Moved to ...
	(gdb_has_a_terminal): Don't check interactive_mode here.
	(_initialize_inflow): Don't install "set interactive-mode" here.
	* main.c (captured_command_loop): Adjust to per-UI stdin.
	* mi/mi-interp.c (mi_execute_command_wrapper): Adjust to per-UI
	stdin.
	* top.c (new_ui): Save the stdin stream and whether it's a tty.
	(dont_repeat): Adjust to per-UI stdin.
	(command_line_input): Adjust to per-UI stdin and to use
	input_interactive_p.
	(quit_force): Write history if any UI supports interactive input.
	(interactive_mode, show_interactive_mode): Move here, from
	inflow.c.
	(input_from_terminal_p): Rename to ...
	(input_interactive_p): ... this, and check the "interactive_mode"
	global instead of calling gdb_has_a_terminal.
	(_initialize_top): Install "set interactive-mode" here.
	* top.h (struct ui) <stdin_stream, input_interactive_p>: New
	fields.
	* utils.c (quit): Pass 0 as from_tty argument to quit_force.
	(defaulted_query): Adjust to per-UI stdin and to use
	input_interactive_p.
 2016-06-21 01:11:54 +01:00
Pedro Alves
07169ff772 Handle UI's terminal closing 
Without this, GDB exits if a secondary UIs terminal/input stream is
closed:

 $ ./gdb -ex "new-ui mi /dev/pts/6"
 New UI allocated
	 <<< close /dev/pts/6
 (gdb) Error detected on fd 9
 $

We want that for the main UI, but not secondary UIs.

gdb/ChangeLog:
2016-06-21  Pedro Alves  <palves@redhat.com>

	* event-top.c (stdin_event_handler): Don't quit gdb if it was a
	secondary UI's input stream that closed.  Instead, just delete the
	UI.
 2016-06-21 01:11:54 +01:00