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2021-05-08gdb, gdbserver: make status_to_str return std::stringSimon Marchi1-9/+11
Instead of using a static buffer. This is safer, and we don't really mind about any extra dynamic allocation here, since it's only used for debug purposes. gdb/ChangeLog: * nat/linux-waitpid.c (status_to_str): Return std::string. * nat/linux-waitpid.h (status_to_str): Likewise. * linux-nat.c (linux_nat_post_attach_wait): Adjust. (linux_nat_target::attach): Adjust. (linux_handle_extended_wait): Adjust. (wait_lwp): Adjust. (stop_wait_callback): Adjust. (linux_nat_filter_event): Adjust. (linux_nat_wait_1): Adjust. * nat/linux-waitpid.c (status_to_str): Adjust. * nat/linux-waitpid.h (status_to_str): Adjust. gdbserver/ChangeLog: * linux-low.cc (linux_process_target::wait_for_event_filtered): Adjust to status_to_str returning std::string. Change-Id: Ia8aead70270438a5690f243e6faafff6c38ff757
2021-05-08Don't run personality syscall at configure time; don't check it at allPedro Alves1-4/+0
Currently, in order to tell whether support for disabling address space randomization on Linux is available, GDB checks if the personality syscall works, at configure time. I.e., it does a run test, instead of a compile/link test: AC_RUN_IFELSE([PERSONALITY_TEST], [have_personality=true], [have_personality=false], This is a bit bogus, because the machine the build is done on may not (and is when you consider distro gdbs) be the machine that eventually runs gdb. It would be better if this were a compile/link test instead, and then at runtime, GDB coped with the personality syscall failing. Actually, GDB already copes. One environment where this is problematic is building GDB in a Docker container -- by default, Docker runs the container with seccomp, with a profile that disables the personality syscall. You can tell Docker to use a less restricted seccomp profile, but I think we should just fix it in GDB. "man 2 personality" says: This system call first appeared in Linux 1.1.20 (and thus first in a stable kernel release with Linux 1.2.0); library support was added in glibc 2.3. ... ADDR_NO_RANDOMIZE (since Linux 2.6.12) With this flag set, disable address-space-layout randomization. glibc 2.3 was released in 2002. Linux 2.6.12 was released in 2005. The original patch that added the configure checks was submitted in 2008. The first version of the patch that was submitted to the list called personality from common code: https://sourceware.org/pipermail/gdb-patches/2008-June/058204.html and then was moved to Linux-specific code: https://sourceware.org/pipermail/gdb-patches/2008-June/058209.html Since HAVE_PERSONALITY is only checked in Linux code, and ADDR_NO_RANDOMIZE exists for over 15 years, I propose just completely removing the configure checks. If for some odd reason, some remotely modern system still needs a configure check, then we can revert this commit but drop the AC_RUN_IFELSE in favor of always doing the AC_LINK_IFELSE cross-compile fallback. gdb/ChangeLog: * linux-nat.c (linux_nat_target::supports_disable_randomization): Remove references to HAVE_PERSONALITY. * nat/linux-personality.c: Remove references to HAVE_PERSONALITY. (maybe_disable_address_space_randomization) (~maybe_disable_address_space_randomizatio): Remove references to HAVE_PERSONALITY. * config.in, configure: Regenerate. gdbserver/ChangeLog: * linux-low.cc: (linux_process_target::supports_disable_randomization): Remove reference to HAVE_PERSONALITY. * config.in, configure: Regenerate. gdbsupport/ChangeLog: * common.m4 (personality test): Remove.
2021-04-07gdb: make target_ops::follow_fork return voidSimon Marchi1-3/+1
I noticed that all implementations return false, so target_ops::follow_fork doesn't really need to return a value. Change it to return void. gdb/ChangeLog: * target.h (struct target_ops) <follow_fork>: Return void. (target_follow_fork): Likewise. * target.c (default_follow_fork): Likewise. (target_follow_fork): Likewise. * infrun.c (follow_fork_inferior): Adjust. * fbsd-nat.h (class fbsd_nat_target) <follow_fork>: Return void. * fbsd-nat.c (fbsd_nat_target:::follow_fork): Likewise. * linux-nat.h (class linux_nat_target) <follow_fork>: Likewise. * linux-nat.c (linux_nat_target::follow_fork): Return void. * obsd-nat.h (class obsd_nat_target) <follow_fork>: Return void. * obsd-nat.c (obsd_nat_target::follow_fork): Likewise. * remote.c (class remote_target) <follow_fork>: Likewise. (remote_target::follow_fork): Likewise. * target-delegates.c: Re-generate. Change-Id: If908c2f68b29fa275be2b0b9deb41e4c6a1b7879
2021-02-23gdb: linux-nat: make linux_nat_filter_event return voidSimon Marchi1-12/+12
I noticed that linux_nat_filter_event returns a value, but its caller doesn't use it. This has been since 9c02b52532ac ("linux-nat.c: better starvation avoidance, handle non-stop mode too"). Before that commit, the return value was used to tell the caller whether to continue processing that event or not. But since then, the model is that we pull all events from the kernel and linux_nat_filter_event just saves the status to the lwp_info structure if it thinks it's relevant. And the caller, linux_nat_wait_1, selects a status at random amongst the threads with a pending status. So essentially, the return value of linux_nat_filter_event does not have a reason to be anymore. Change it so it returns void. gdb/ChangeLog: * linux-nat.c (linux_nat_filter_event): Return void. Change-Id: I35662868910f5122772ed92a512adfbf4da12d87
2021-02-12[gdb/threads] Fix lin_thread_get_thread_signals for glibc 2.28Tom de Vries1-9/+17
When running test-case gdb.threads/create-fail.exp on openSUSE Factory (with glibc version 2.32) I run into: ... (gdb) continue Continuing. [New Thread 0x7ffff7c83700 (LWP 626354)] [New Thread 0x7ffff7482700 (LWP 626355)] [Thread 0x7ffff7c83700 (LWP 626354) exited] [New Thread 0x7ffff6c81700 (LWP 626356)] [Thread 0x7ffff7482700 (LWP 626355) exited] [New Thread 0x7ffff6480700 (LWP 626357)] [Thread 0x7ffff6c81700 (LWP 626356) exited] [New Thread 0x7ffff5c7f700 (LWP 626358)] [Thread 0x7ffff6480700 (LWP 626357) exited] pthread_create: 22: Invalid argument Thread 6 "create-fail" received signal SIG32, Real-time event 32. [Switching to Thread 0x7ffff5c7f700 (LWP 626358)] 0x00007ffff7d87695 in clone () from /lib64/libc.so.6 (gdb) FAIL: gdb.threads/create-fail.exp: iteration 1: run till end ... The problem is that glibc-internal signal SIGCANCEL is not recognized by gdb. There's code in check_thread_signals that is supposed to take care of that, but it's not working because this code in lin_thread_get_thread_signals has stopped working: ... /* NPTL reserves the first two RT signals, but does not provide any way for the debugger to query the signal numbers - fortunately they don't change. */ sigaddset (set, __SIGRTMIN); sigaddset (set, __SIGRTMIN + 1); ... Since glibc commit d2dc5467c6 "Filter out NPTL internal signals (BZ #22391)" (first released as part of glibc 2.28), a sigaddset with a glibc-internal signal has no other effect than setting errno to EINVALID. Fix this by eliminating the usage of sigset_t in check_thread_signals and lin_thread_get_thread_signals. The same problem was observed on Ubuntu 20.04. Tested on x86_64-linux, openSUSE Factory. Tested on aarch64-linux, Ubuntu 20.04 and Ubuntu 18.04. gdb/ChangeLog: 2021-02-12 Tom de Vries <tdevries@suse.de> PR threads/26228 * linux-nat.c (lin_thread_get_thread_signals): Remove. (lin_thread_signals): New static var. (lin_thread_get_thread_signal_num, lin_thread_get_thread_signal): New function. * linux-nat.h (lin_thread_get_thread_signals): Remove. (lin_thread_get_thread_signal_num, lin_thread_get_thread_signal): Declare. * linux-thread-db.c (check_thread_signals): Use lin_thread_get_thread_signal_num and lin_thread_get_thread_signal.
2021-02-03detach and breakpoint removalPedro Alves1-0/+5
A following patch will add a testcase that has a number of threads constantly stepping over a breakpoint, and then has GDB detach the process. That testcase sometimes fails with the inferior crashing with SIGTRAP after the detach because of the bug fixed by this patch, when tested with the native target. The problem is that target_detach removes breakpoints from the target immediately, and that does not work with the native GNU/Linux target (and probably no other native target) currently. The test wouldn't fail with this issue when testing against gdbserver, because gdbserver does allow accessing memory while the current thread is running, by transparently pausing all threads temporarily, without GDB noticing. Implementing that in gdbserver was a lot of work, so I'm not looking forward right now to do the same in the native target. Instead, I came up with a simpler solution -- push the breakpoints removal down to the targets. The Linux target conveniently already pauses all threads before detaching them, since PTRACE_DETACH only works with stopped threads, so we move removing breakpoints to after that. Only the remote and GNU/Linux targets support support async execution, so no other target should really need this. gdb/ChangeLog: * linux-nat.c (linux_nat_target::detach): Remove breakpoints here... * remote.c (remote_target::remote_detach_1): ... and here ... * target.c (target_detach): ... instead of here. * target.h (target_ops::detach): Add comment.
2021-01-20gdb: make some variables staticSimon Marchi1-1/+1
I'm trying to enable clang's -Wmissing-variable-declarations warning. This patch fixes all the obvious spots where we can simply add "static" (at least, found when building on x86-64 Linux). gdb/ChangeLog: * aarch64-linux-tdep.c (aarch64_linux_record_tdep): Make static. * aarch64-tdep.c (tdesc_aarch64_list, aarch64_prologue_unwind, aarch64_stub_unwind, aarch64_normal_base, ): Make static. * arm-linux-tdep.c (arm_prologue_unwind): Make static. * arm-tdep.c (struct frame_unwind): Make static. * auto-load.c (auto_load_safe_path_vec): Make static. * csky-tdep.c (csky_stub_unwind): Make static. * gdbarch.c (gdbarch_data_registry): Make static. * gnu-v2-abi.c (gnu_v2_abi_ops): Make static. * i386-netbsd-tdep.c (i386nbsd_mc_reg_offset): Make static. * i386-tdep.c (i386_frame_setup_skip_insns, i386_tramp_chain_in_reg_insns, i386_tramp_chain_on_stack_insns): Make static. * infrun.c (observer_mode): Make static. * linux-nat.c (sigchld_action): Make static. * linux-thread-db.c (thread_db_list): Make static. * maint-test-options.c (maintenance_test_options_list): * mep-tdep.c (mep_csr_registers): Make static. * mi/mi-cmds.c (struct mi_cmd_stats): Remove struct type name. (stats): Make static. * nat/linux-osdata.c (struct osdata_type): Make static. * ppc-netbsd-tdep.c (ppcnbsd_reg_offsets): Make static. * progspace.c (last_program_space_num): Make static. * python/py-param.c (struct parm_constant): Remove struct type name. (parm_constants): Make static. * python/py-record-btrace.c (btpy_list_methods): Make static. * python/py-record.c (recpy_gap_type): Make static. * record.c (record_goto_cmdlist): Make static. * regcache.c (regcache_descr_handle): Make static. * registry.h (DEFINE_REGISTRY): Make definition static. * symmisc.c (std_in, std_out, std_err): Make static. * top.c (previous_saved_command_line): Make static. * tracepoint.c (trace_user, trace_notes, trace_stop_notes): Make static. * unittests/command-def-selftests.c (nr_duplicates, nr_invalid_prefixcmd, lists): Make static. * unittests/observable-selftests.c (test_notification): Make static. * unittests/optional/assignment/1.cc (counter): Make static. * unittests/optional/assignment/2.cc (counter): Make static. * unittests/optional/assignment/3.cc (counter): Make static. * unittests/optional/assignment/4.cc (counter): Make static. * unittests/optional/assignment/5.cc (counter): Make static. * unittests/optional/assignment/6.cc (counter): Make static. gdbserver/ChangeLog: * ax.cc (bytecode_address_table): Make static. * debug.cc (debug_file): Make static. * linux-low.cc (stopping_threads): Make static. (step_over_bkpt): Make static. * linux-x86-low.cc (amd64_emit_ops, i386_emit_ops): Make static. * tracepoint.cc (stop_tracing_bkpt, flush_trace_buffer_bkpt, alloced_trace_state_variables, trace_buffer_ctrl, tracing_start_time, tracing_stop_time, tracing_user_name, tracing_notes, tracing_stop_note): Make static. Change-Id: Ic1d8034723b7802502bda23770893be2338ab020
2021-01-01Update copyright year range in all GDB filesJoel Brobecker1-1/+1
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.
2020-12-11gdb: factor out debug_prefixed_printf_condSimon Marchi1-6/+1
The same pattern happens often to define a "debug_printf" macro: #define displaced_debug_printf(fmt, ...) \ do \ { \ if (debug_displaced) \ debug_prefixed_printf ("displaced", __func__, fmt, ##__VA_ARGS__); \ } \ while (0) Move this pattern behind a helper macro, debug_prefixed_printf_cond and update the existing macros to use it. gdb/ChangeLog: * displaced-stepping.h (displaced_debug_printf): Use debug_prefixed_printf_cond. * dwarf2/read.c (dwarf_read_debug_printf): Likewise. (dwarf_read_debug_printf_v): Likewise. * infrun.h (infrun_debug_printf): Likewise. * linux-nat.c (linux_nat_debug_printf): Likewise. gdbsupport/ChangeLog: * common-debug.h (debug_prefixed_printf_cond): New. * event-loop.h (event_loop_debug_printf): Use debug_prefixed_printf_cond. Change-Id: I1ff48b98b8d1cc405d1c7e8da8ceadf4e3a17f99
2020-11-02gdb, gdbserver, gdbsupport: fix leading space vs tabs issuesSimon Marchi1-3/+3
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
2020-10-31gdb: restore some checks of debug flagsAndrew Burgess1-1/+6
This partially reverts some parts of the commit: commit 17417fb0ec9842de1774e1e76f1f11c00cdafc47 Date: Sat Oct 31 09:01:25 2020 -0400 gdb, gdbsupport: add debug_prefixed_printf, remove boilerplate functions This commit removed 3 places where some debug flags were being checked. The result was that debug tracing was being printed unconditionally. This commit adds back the 3 flag checks. gdb/ChangeLog: * infrun.h (infrun_debug_printf): Add check of debug_infrun flag. (debug_prefixed_printf): Add check of debug_displaced flag. * linux-nat.c (linux_nat_debug_printf): Add check of debug_linux_nat flag.
2020-10-31gdb, gdbsupport: add debug_prefixed_printf, remove boilerplate functionsSimon Marchi1-16/+2
The *_debug_print_1 functions are all very similar, the only difference being the subsystem name. Remove them all and make the logging macros use a new debug_prefixed_printf function directly. gdb/ChangeLog: * infrun.c (infrun_debug_printf_1): Remove. (displaced_debug_printf_1): Remove. (stop_all_threads): Use debug_prefixed_printf. * infrun.h (infrun_debug_printf_1): Remove. (infrun_debug_printf): Use debug_prefixed_printf. (displaced_debug_printf_1): Remove. (displaced_debug_printf): Use debug_prefixed_printf. * linux-nat.c (linux_nat_debug_printf_1): Remove. (linux_nat_debug_printf): Use debug_prefixed_printf. gdbsupport/ChangeLog: * common-debug.cc (debug_prefixed_printf): New. * common-debug.h (debug_prefixed_printf): New declaration. * event-loop.cc (event_loop_debug_printf_1): Remove. * event-loop.h (event_loop_debug_printf_1): Remove. (event_loop_debug_printf): Use debug_prefixed_printf. (event_loop_ui_debug_printf): Use debug_prefixed_printf. Change-Id: Ib323087c7257f0060121d302055c41eb64aa60c6
2020-10-02gdb: move debug_prefixed_vprintf hereSimon Marchi1-1/+1
The following patch needs to output debug prints from gdbsupport code. Move debug_prefixed_vprintf so that it is possible to use it from gdbsupport. gdb/ChangeLog: * debug.c (debug_prefixed_vprintf): Move to gdbsupport. * debug.h: Remove. * infrun.c: Include gdbsupport/common-debug.h. * linux-nat.c: Likewise. gdbsupport/ChangeLog: * common-debug.cc (debug_prefixed_vprintf): Move here. * common-debug.h (debug_prefixed_vprintf): Move here. Change-Id: I5170065fc10a7a49c0f1bba67c691decb2cf3bcb
2020-10-02gdb: give names to event loop file handlersSimon Marchi1-1/+2
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 cbe256847e19 ("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
2020-09-25gdb: fix formatting of _debug_printf macrosSimon Marchi1-4/+6
The do/while in these macros are not formatted with proper GNU style, fix that. gdb/ChangeLog: * infrun.h (infrun_debug_printf): Fix formatting. * linux-nat.c (linux_nat_debug_printf): Fix formatting. Change-Id: I3a723663c76d9091f785941923c2b6cf67459629
2020-09-18Make target_wait options use enum flagsTom Tromey1-2/+2
This changes TARGET_WNOHANG to be a member of an enum, rather than a define, and also adds a DEF_ENUM_FLAGS_TYPE for this type. Then, it changes target_wait and the various target wait methods to use this type rather than "int". This didn't catch any bugs, but it seems like a decent cleanup nevertheless. I did not change deprecated_target_wait_hook, since that's only used out-of-tree (by Insight), and there didn't seem to be a need. I can't build some of these targets, so I modified them on a best-effort basis. I don't think this patch should go in before the release branch is made. gdb/ChangeLog 2020-09-18 Tom Tromey <tromey@adacore.com> * windows-nat.c (struct windows_nat_target) <wait>: Update. (windows_nat_target::wait): Update. * target/wait.h (enum target_wait_flag): New. Use DEF_ENUM_FLAGS_TYPE. * target/target.h (target_wait): Change type of options. * target.h (target_options_to_string, default_target_wait): Update. (struct target_ops) <wait>: Change type of options. * target.c (target_wait, default_target_wait, do_option): Change type of "options". (target_options_to_string): Likewise. * target-delegates.c: Rebuild. * target-debug.h (target_debug_print_target_wait_flags): Rename from target_debug_print_options. * sol-thread.c (class sol_thread_target) <wait>: Update. (sol_thread_target::wait): Update. * rs6000-nat.c (class rs6000_nat_target) <wait>: Update. (rs6000_nat_target::wait): Update. * remote.c (class remote_target) <wait, wait_ns, wait_as>: Update. (remote_target::wait_ns, remote_target::wait_as): Change type of "options". (remote_target::wait): Update. * remote-sim.c (struct gdbsim_target) <wait>: Update. (gdbsim_target::wait): Update. * record-full.c (class record_full_base_target) <wait>: Update. (record_full_wait_1): Change type of "options". (record_full_base_target::wait): Update. * record-btrace.c (class record_btrace_target) <wait>: Update. (record_btrace_target::wait): Update. * ravenscar-thread.c (struct ravenscar_thread_target) <wait>: Update. (ravenscar_thread_target::wait): Update. * procfs.c (class procfs_target) <wait>: Update. (procfs_target::wait): Update. * obsd-nat.h (class obsd_nat_target) <wait>: Update. * obsd-nat.c (obsd_nat_target::wait): Update. * nto-procfs.c (struct nto_procfs_target) <wait>: Update. (nto_procfs_target::wait): Update. * nbsd-nat.h (struct nbsd_nat_target) <wait>: Update. * nbsd-nat.c (nbsd_wait): Change type of "options". (nbsd_nat_target::wait): Update. * linux-thread-db.c (class thread_db_target) <wait>: Update. (thread_db_target::wait): Update. * linux-nat.h (class linux_nat_target) <wait>: Update. * linux-nat.c (linux_nat_target::wait): Update. (linux_nat_wait_1): Update. * infrun.c (do_target_wait_1, do_target_wait): Change type of "options". * inf-ptrace.h (struct inf_ptrace_target) <wait>: Update. * inf-ptrace.c (inf_ptrace_target::wait): Update. * go32-nat.c (struct go32_nat_target) <wait>: Update. (go32_nat_target::wait): Update. * gnu-nat.h (struct gnu_nat_target) <wait>: Update. * gnu-nat.c (gnu_nat_target::wait): Update. * fbsd-nat.h (class fbsd_nat_target) <wait>: Update. * fbsd-nat.c (fbsd_nat_target::wait): Update. * darwin-nat.h (class darwin_nat_target) <wait>: Update. * darwin-nat.c (darwin_nat_target::wait): Update. * bsd-uthread.c (struct bsd_uthread_target) <wait>: Update. (bsd_uthread_target::wait): Update. * aix-thread.c (class aix_thread_target) <wait>: Update. (aix_thread_target::wait): Update. gdbserver/ChangeLog 2020-09-18 Tom Tromey <tromey@adacore.com> * netbsd-low.h (class netbsd_process_target) <wait>: Update. * netbsd-low.cc (netbsd_waitpid, netbsd_wait) (netbsd_process_target::wait): Change type of target_options. * win32-low.h (class win32_process_target) <wait>: Update. * win32-low.cc (win32_process_target::wait): Update. * target.h (class process_stratum_target) <wait>: Update. (mywait): Update. * target.cc (mywait, target_wait): Change type of "options". * linux-low.h (class linux_process_target) <wait, wait_1>: Update. * linux-low.cc (linux_process_target::wait) (linux_process_target::wait_1): Update.
2020-09-14gdb: don't use inferior_ptid in linux_nat_wait_1Simon Marchi1-6/+5
target_ops::wait implementations should not rely on the value of inferior_ptid on entry. While looking at another wait-related patch, I noticed that the code in linux_nat_wait_1, checking for a newly created process, did just that. This patch fixes it. Note that I didn't see any bug, this "fix" is simply to make the function respect the target_ops::wait contract. Instead of checking inferior_ptid, check for the passed in `ptid` value. During startup, linux_nat_wait_1 gets called a few times with the pid-only ptid, while startup_inferior waits for the expected number of exec events. For this reason, I needed to add a `find_lwp_pid` call to ensure that the actions of changing the main thread's ptid, and adding the initial lwp, were done only once for a given process. This was not needed before, since thread_change_ptid, through the thread_ptid_changed observer, ends up changing inferior_ptid. So the second time around, inferior_ptid was not a pid-only ptid. That find_lwp_pid won't add much overhead, as it will only be called when the ptid is a pid-only ptid. And AFAIK, that only happens during inferior startup. An alternative to that `find_lwp_pid` call might be to make startup_inferior realize that the main thread has changed ptid, and make it wait for the new ptid. But that doesn't look easy to do. Regtested on amd64/Linux. gdb/ChangeLog: * linux-nat.c (linux_nat_wait_1): Don't use inferior_ptid when checking for initial lwp. Change-Id: I8f1d5c766f5cb2a29c948bc75fa4582d7130c23f
2020-08-24gdb: add debug_prefixed_vprintfSimon Marchi1-5/+2
To help ensure that all debug statements have the same format, introduce the debug_prefixed_vprintf helper. Implement linux_nat_debug_printf_1 and infrun_debug_printf_1 with it. I would eventually like to style the module and function name with some color, to help them stick out, but I don't really know how to do that yet, it can always be done later. gdb/ChangeLog: * debug.h: New file. * debug.c (debug_prefixed_vprintf): New function. * infrun.c (infrun_debug_printf_1): Use debug_prefixed_vprintf. * linux-nat.c (linux_nat_debug_printf_1): Likewise. Change-Id: Iccc290a2dc6b5fffcbe1c2866ed8d804ad380764
2020-08-18gdb: add linux_nat_debug_printf macroSimon Marchi1-393/+226
The debug prints inside linux-nat.c almost all have a prefix that indicate in which function they are located. This prefix is an abbreviation of the function name. For example, this print is in the `linux_nat_post_attach_wait` function: if (debug_linux_nat) fprintf_unfiltered (gdb_stdlog, "LNPAW: Attaching to a stopped process\n"); Over time, the code has changed, things were moved, and many of these prefixes are not accurate anymore. Also, unless you know the linux-nat.c file by heart, it's a bit cryptic what LLR, LNW, RSRL, etc, all mean. To address both of these issues, I suggest adding this macro for printing debug statements, which automatically includes the function name. It also includes the `[linux-nat]` prefix to clarify which part of GDB printed this (I think that, ideally, all debug prints would include such a tag). The `__func__` magic symbol is used to get the function name. Unfortunately, in the case of methods, it only contains the method name, not the class name. So we'll get "wait", where I would have liked to get "linux_nat_target::wait". But at least with the `[linux-nat]` tag in the front, it's not really ambiguous. I've made the macro automatically include the trailing newline, because it wouldn't make sense to call it twice to print two parts of one line, the `[linux-nat]` tag would be printed in the middle. An advantage of this (IMO) is that it's less verbose, we don't have to check for `if (debug_linux_nat)` everywhere. Another advantage is that it's easier to customize the output later, without having to touch all call sites. Here's an example of what it looks like in the end: [linux-nat] linux_nat_wait_1: enter [linux-nat] wait: [process -1], [TARGET_WNOHANG] gdb/ChangeLog: * linux-nat.c (linux_nat_debug_printf): New function. (linux_nat_debug_printf_1): New macro. Use throughout the file. Change-Id: Ifcea3255b91400d3ad093cd0b75d3fac241cb998
2020-07-21gdb, gdbserver: make stopped_pids global variables staticSimon Marchi1-1/+1
I noticed that my IDE was confusing the two stopped_pids variables. There is one in GDB and one in GDBserver. They should be static, make them so. gdb/ChangeLog: * linux-nat.c (stopped_pids): Make static. gdbserver/ChangeLog: * linux-low.cc (stopped_pids): Make static. Change-Id: If4a2bdcd45d32eb3a732d266a0f686a4e4c23672
2020-07-18Remove "linux_multi_process" globalTom Tromey1-6/+1
The "linux_multi_process" is initialized but never modified. I discussed this with Pedro on irc, and he said that, while it was useful when developing this feature, it is now no longer needed. So, this removes it. gdb/ChangeLog 2020-07-18 Tom Tromey <tom@tromey.com> * linux-nat.c (linux_multi_process): Remove. (linux_nat_target::supports_multi_process): Return true.
2020-07-17Use boolean literals in linux-nat.cTom Tromey1-4/+4
I noticed a couple of spots in linux-nat.c that use 0/1 where boolean literals would be more idiomatic. This patch makes this change. gdb/ChangeLog 2020-07-17 Tom Tromey <tromey@adacore.com> * linux-nat.c (linux_nat_target::supports_non_stop) (linux_nat_target::always_non_stop_p): Use "true". (linux_nat_target::supports_disable_randomization): Use "true" and "false".
2020-07-02gdb: remove unused fetch_inferior_event and inferior_event_handler parametersSimon Marchi1-1/+1
I noticed that fetch_inferior_event receives the client_data parameter from its caller, inferior_event_handler, but doesn't actually need it. This patch removes it. In turn, inferior_event_handler doesn't use its parameter, so remove it too. The `data` argument used when registering remote_async_inferior_event_handler is changed to NULL, to avoid confusion. It could make people think that the value passed is used somewhere, when in fact it's not. gdb/ChangeLog: * inf-loop.c (inferior_event_handler): Remove client_data param. * inf-loop.h (inferior_event_handler): Likewise. * infcmd.c (step_1): Adjust. * infrun.c (proceed): Adjust. (fetch_inferior_event): Remove client_data param. (infrun_async_inferior_event_handler): Adjust. * infrun.h (fetch_inferior_event): Remove `void *` param. * linux-nat.c (handle_target_event): Adjust. * record-btrace.c (record_btrace_handle_async_inferior_event): Adjust. * record-full.c (record_full_async_inferior_event_handler): Adjust. * remote.c (remote_async_inferior_event_handler): Adjust. Change-Id: I3c2aa1eb0ea3e0985df096660d2dcd794674f2ea
2020-04-13Move event-loop.[ch] to gdbsupport/Tom Tromey1-1/+1
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/.
2020-03-30Add low_new_clone method to linux_nat_target.Pedro Franco de Carvalho1-0/+4
This patch adds a low_new_clone method to linux_nat_target, called after a PTRACE_EVENT_CLONE is detected, similar to how low_new_fork is called after PTRACE_EVENT_(V)FORK. This is useful for targets that need to copy state associated with a thread that is inherited across clones. gdb/ChangeLog: 2020-03-30 Pedro Franco de Carvalho <pedromfc@linux.ibm.com> * linux-nat.h (low_new_clone): New method. * linux-nat.c (linux_handle_extended_wait): Call low_new_clone.
2020-03-24gdb: bool-ify follow_forkSimon Marchi1-3/+3
Change parameters and return value of the various follow_fork functions/methods from int to bool. gdb/ChangeLog: * fbsd-nat.c (fbsd_nat_target::follow_fork): Change bool to int. * fbsd-nat.h (class fbsd_nat_target) <follow_fork>: Likewise. * inf-ptrace.c (inf_ptrace_target::follow_fork): Likewise. * inf-ptrace.h (struct inf_ptrace_target) <follow_fork>: Likewise. * infrun.c (follow_fork): Likewise. (follow_fork_inferior): Likewise. * linux-nat.c (linux_nat_target::follow_fork): Likewise. * linux-nat.h (class linux_nat_target): Likewise. * remote.c (class remote_target) <follow_fork>: Likewise. (remote_target::follow_fork): Likewise. * target-delegates.c: Re-generate. * target.c (default_follow_fork): Likewise. (target_follow_fork): Likewise. * target.h (struct target_ops) <follow_fork>: Likewise. (target_follow_fork): Likewise.
2020-02-11Remove some ui_file_* functionsTom Tromey1-2/+1
This removes ui_file_isatty, ui_file_read, ui_file_write, ui_file_write_async_safe, ui_file_flush, and ui_file_puts, replacing them with calls to the appropriate method instead. gdb/ChangeLog 2020-02-11 Tom Tromey <tromey@adacore.com> * remote.c (remote_console_output): Update. * printcmd.c (printf_command): Update. * event-loop.c (gdb_wait_for_event): Update. * linux-nat.c (sigchld_handler): Update. * remote-sim.c (gdb_os_write_stdout): Update. (gdb_os_flush_stdout): Update. (gdb_os_flush_stderr): Update. (gdb_os_write_stderr): Update. * exceptions.c (print_exception): Update. * remote-fileio.c (remote_fileio_func_read): Update. (remote_fileio_func_write): Update. * tui/tui.c (tui_enable): Update. * tui/tui-interp.c (tui_interp::init): Update. * utils.c (init_page_info): Update. (putchar_unfiltered, fputc_unfiltered): Update. (gdb_flush): Update. (emit_style_escape): Update. (flush_wrap_buffer, fputs_maybe_filtered): Update. * ui-file.c (ui_file_isatty, ui_file_read, ui_file_write) (ui_file_write_async_safe, ui_file_flush, ui_file_puts): Remove. (stderr_file::write): Update. (stderr_file::puts): Update. * ui-file.h (ui_file_isatty, ui_file_write) (ui_file_write_async_safe, ui_file_read, ui_file_flush) (ui_file_puts): Don't declare. Change-Id: I3ca9b36e9107f6adbc41e014f5078b41d6bcec4d
2020-02-03Change ints to bools around thread_info executing/resumedSimon Marchi1-4/+4
Switch thread_info::resumed to bool (thread_info::executing already is a bool), and try to change everything more or less related to that to consistently use true/false instead of 1/0. gdb/ChangeLog: * fork-child.c (gdb_startup_inferior): Use bool instead of int. * gdbthread.h (class thread_info) <resumed>: Likewise. * infrun.c (resume_1): Likewise. (proceed): Likewise. (infrun_thread_stop_requested): Likewise. (stop_all_threads): Likewise. (handle_inferior_event): Likewise. (restart_threads): Likewise. (finish_step_over): Likewise. (keep_going_stepped_thread): Likewise. * linux-nat.c (attach_proc_task_lwp_callback): Likewise. (linux_handle_extended_wait): Likewise. * record-btrace.c (get_thread_current_frame_id): Likewise. * record-full.c (record_full_wait_1): Likewise. * remote.c (remote_target::process_initial_stop_replies): Likewise. * target.c (target_resume): Likewise. * thread.c (set_running_thread): Likewise.
2020-01-14Fix/Update misc commentsLuis Machado1-4/+5
While doing some investigation of mine, i noticed a few typos, inaccuracies and missing information. I went ahead and updated/improved those. gdb/ChangeLog: 2020-01-14 Luis Machado <luis.machado@linaro.org> * inf-ptrace.c (inf_ptrace_target::resume): Update comments. * infrun.c (resume_1): Likewise. (handle_inferior_event): Remove stale comment. * linux-nat.c (linux_nat_target::resume): Update comments. (save_stop_reason): Likewise. (linux_nat_filter_event): Likewise. * linux-nat.h (struct lwp_info) <stop_pc>, <stop_reason>: Likewise.
2020-01-13gdb: add back declarations for _initialize functionsSimon Marchi1-1/+2
I'd like to enable the -Wmissing-declarations warning. However, it warns for every _initialize function, for example: CXX dcache.o /home/smarchi/src/binutils-gdb/gdb/dcache.c: In function ‘void _initialize_dcache()’: /home/smarchi/src/binutils-gdb/gdb/dcache.c:688:1: error: no previous declaration for ‘void _initialize_dcache()’ [-Werror=missing-declarations] _initialize_dcache (void) ^~~~~~~~~~~~~~~~~~ The only practical way forward I found is to add back the declarations, which were removed by this commit: commit 481695ed5f6e0a8a9c9c50bfac1cdd2b3151e6c9 Author: John Baldwin <jhb@FreeBSD.org> Date: Sat Sep 9 11:02:37 2017 -0700 Remove unnecessary function prototypes. I don't think it's a big problem to have the declarations for these functions, but if anybody has a better solution for this, I'll be happy to use it. gdb/ChangeLog: * aarch64-fbsd-nat.c (_initialize_aarch64_fbsd_nat): Add declaration. * aarch64-fbsd-tdep.c (_initialize_aarch64_fbsd_tdep): Add declaration. * aarch64-linux-nat.c (_initialize_aarch64_linux_nat): Add declaration. * aarch64-linux-tdep.c (_initialize_aarch64_linux_tdep): Add declaration. * aarch64-newlib-tdep.c (_initialize_aarch64_newlib_tdep): Add declaration. * aarch64-tdep.c (_initialize_aarch64_tdep): Add declaration. * ada-exp.y (_initialize_ada_exp): Add declaration. * ada-lang.c (_initialize_ada_language): Add declaration. * ada-tasks.c (_initialize_tasks): Add declaration. * agent.c (_initialize_agent): Add declaration. * aix-thread.c (_initialize_aix_thread): Add declaration. * alpha-bsd-nat.c (_initialize_alphabsd_nat): Add declaration. * alpha-linux-nat.c (_initialize_alpha_linux_nat): Add declaration. * alpha-linux-tdep.c (_initialize_alpha_linux_tdep): Add declaration. * alpha-nbsd-tdep.c (_initialize_alphanbsd_tdep): Add declaration. * alpha-obsd-tdep.c (_initialize_alphaobsd_tdep): Add declaration. * alpha-tdep.c (_initialize_alpha_tdep): Add declaration. * amd64-darwin-tdep.c (_initialize_amd64_darwin_tdep): Add declaration. * amd64-dicos-tdep.c (_initialize_amd64_dicos_tdep): Add declaration. * amd64-fbsd-nat.c (_initialize_amd64fbsd_nat): Add declaration. * amd64-fbsd-tdep.c (_initialize_amd64fbsd_tdep): Add declaration. * amd64-linux-nat.c (_initialize_amd64_linux_nat): Add declaration. * amd64-linux-tdep.c (_initialize_amd64_linux_tdep): Add declaration. * amd64-nbsd-nat.c (_initialize_amd64nbsd_nat): Add declaration. * amd64-nbsd-tdep.c (_initialize_amd64nbsd_tdep): Add declaration. * amd64-obsd-nat.c (_initialize_amd64obsd_nat): Add declaration. * amd64-obsd-tdep.c (_initialize_amd64obsd_tdep): Add declaration. * amd64-sol2-tdep.c (_initialize_amd64_sol2_tdep): Add declaration. * amd64-tdep.c (_initialize_amd64_tdep): Add declaration. * amd64-windows-nat.c (_initialize_amd64_windows_nat): Add declaration. * amd64-windows-tdep.c (_initialize_amd64_windows_tdep): Add declaration. * annotate.c (_initialize_annotate): Add declaration. * arc-newlib-tdep.c (_initialize_arc_newlib_tdep): Add declaration. * arc-tdep.c (_initialize_arc_tdep): Add declaration. * arch-utils.c (_initialize_gdbarch_utils): Add declaration. * arm-fbsd-nat.c (_initialize_arm_fbsd_nat): Add declaration. * arm-fbsd-tdep.c (_initialize_arm_fbsd_tdep): Add declaration. * arm-linux-nat.c (_initialize_arm_linux_nat): Add declaration. * arm-linux-tdep.c (_initialize_arm_linux_tdep): Add declaration. * arm-nbsd-nat.c (_initialize_arm_netbsd_nat): Add declaration. * arm-nbsd-tdep.c (_initialize_arm_netbsd_tdep): Add declaration. * arm-obsd-tdep.c (_initialize_armobsd_tdep): Add declaration. * arm-pikeos-tdep.c (_initialize_arm_pikeos_tdep): Add declaration. * arm-symbian-tdep.c (_initialize_arm_symbian_tdep): Add declaration. * arm-tdep.c (_initialize_arm_tdep): Add declaration. * arm-wince-tdep.c (_initialize_arm_wince_tdep): Add declaration. * auto-load.c (_initialize_auto_load): Add declaration. * auxv.c (_initialize_auxv): Add declaration. * avr-tdep.c (_initialize_avr_tdep): Add declaration. * ax-gdb.c (_initialize_ax_gdb): Add declaration. * bfin-linux-tdep.c (_initialize_bfin_linux_tdep): Add declaration. * bfin-tdep.c (_initialize_bfin_tdep): Add declaration. * break-catch-sig.c (_initialize_break_catch_sig): Add declaration. * break-catch-syscall.c (_initialize_break_catch_syscall): Add declaration. * break-catch-throw.c (_initialize_break_catch_throw): Add declaration. * breakpoint.c (_initialize_breakpoint): Add declaration. * bsd-uthread.c (_initialize_bsd_uthread): Add declaration. * btrace.c (_initialize_btrace): Add declaration. * charset.c (_initialize_charset): Add declaration. * cli/cli-cmds.c (_initialize_cli_cmds): Add declaration. * cli/cli-dump.c (_initialize_cli_dump): Add declaration. * cli/cli-interp.c (_initialize_cli_interp): Add declaration. * cli/cli-logging.c (_initialize_cli_logging): Add declaration. * cli/cli-script.c (_initialize_cli_script): Add declaration. * cli/cli-style.c (_initialize_cli_style): Add declaration. * coff-pe-read.c (_initialize_coff_pe_read): Add declaration. * coffread.c (_initialize_coffread): Add declaration. * compile/compile-cplus-types.c (_initialize_compile_cplus_types): Add declaration. * compile/compile.c (_initialize_compile): Add declaration. * complaints.c (_initialize_complaints): Add declaration. * completer.c (_initialize_completer): Add declaration. * copying.c (_initialize_copying): Add declaration. * corefile.c (_initialize_core): Add declaration. * corelow.c (_initialize_corelow): Add declaration. * cp-abi.c (_initialize_cp_abi): Add declaration. * cp-namespace.c (_initialize_cp_namespace): Add declaration. * cp-support.c (_initialize_cp_support): Add declaration. * cp-valprint.c (_initialize_cp_valprint): Add declaration. * cris-linux-tdep.c (_initialize_cris_linux_tdep): Add declaration. * cris-tdep.c (_initialize_cris_tdep): Add declaration. * csky-linux-tdep.c (_initialize_csky_linux_tdep): Add declaration. * csky-tdep.c (_initialize_csky_tdep): Add declaration. * ctfread.c (_initialize_ctfread): Add declaration. * d-lang.c (_initialize_d_language): Add declaration. * darwin-nat-info.c (_initialize_darwin_info_commands): Add declaration. * darwin-nat.c (_initialize_darwin_nat): Add declaration. * dbxread.c (_initialize_dbxread): Add declaration. * dcache.c (_initialize_dcache): Add declaration. * disasm-selftests.c (_initialize_disasm_selftests): Add declaration. * disasm.c (_initialize_disasm): Add declaration. * dtrace-probe.c (_initialize_dtrace_probe): Add declaration. * dummy-frame.c (_initialize_dummy_frame): Add declaration. * dwarf-index-cache.c (_initialize_index_cache): Add declaration. * dwarf-index-write.c (_initialize_dwarf_index_write): Add declaration. * dwarf2-frame-tailcall.c (_initialize_tailcall_frame): Add declaration. * dwarf2-frame.c (_initialize_dwarf2_frame): Add declaration. * dwarf2expr.c (_initialize_dwarf2expr): Add declaration. * dwarf2loc.c (_initialize_dwarf2loc): Add declaration. * dwarf2read.c (_initialize_dwarf2_read): Add declaration. * elfread.c (_initialize_elfread): Add declaration. * exec.c (_initialize_exec): Add declaration. * extension.c (_initialize_extension): Add declaration. * f-lang.c (_initialize_f_language): Add declaration. * f-valprint.c (_initialize_f_valprint): Add declaration. * fbsd-nat.c (_initialize_fbsd_nat): Add declaration. * fbsd-tdep.c (_initialize_fbsd_tdep): Add declaration. * filesystem.c (_initialize_filesystem): Add declaration. * findcmd.c (_initialize_mem_search): Add declaration. * findvar.c (_initialize_findvar): Add declaration. * fork-child.c (_initialize_fork_child): Add declaration. * frame-base.c (_initialize_frame_base): Add declaration. * frame-unwind.c (_initialize_frame_unwind): Add declaration. * frame.c (_initialize_frame): Add declaration. * frv-linux-tdep.c (_initialize_frv_linux_tdep): Add declaration. * frv-tdep.c (_initialize_frv_tdep): Add declaration. * ft32-tdep.c (_initialize_ft32_tdep): Add declaration. * gcore.c (_initialize_gcore): Add declaration. * gdb-demangle.c (_initialize_gdb_demangle): Add declaration. * gdb_bfd.c (_initialize_gdb_bfd): Add declaration. * gdbarch-selftests.c (_initialize_gdbarch_selftests): Add declaration. * gdbarch.c (_initialize_gdbarch): Add declaration. * gdbtypes.c (_initialize_gdbtypes): Add declaration. * gnu-nat.c (_initialize_gnu_nat): Add declaration. * gnu-v2-abi.c (_initialize_gnu_v2_abi): Add declaration. * gnu-v3-abi.c (_initialize_gnu_v3_abi): Add declaration. * go-lang.c (_initialize_go_language): Add declaration. * go32-nat.c (_initialize_go32_nat): Add declaration. * guile/guile.c (_initialize_guile): Add declaration. * h8300-tdep.c (_initialize_h8300_tdep): Add declaration. * hppa-linux-nat.c (_initialize_hppa_linux_nat): Add declaration. * hppa-linux-tdep.c (_initialize_hppa_linux_tdep): Add declaration. * hppa-nbsd-nat.c (_initialize_hppanbsd_nat): Add declaration. * hppa-nbsd-tdep.c (_initialize_hppanbsd_tdep): Add declaration. * hppa-obsd-nat.c (_initialize_hppaobsd_nat): Add declaration. * hppa-obsd-tdep.c (_initialize_hppabsd_tdep): Add declaration. * hppa-tdep.c (_initialize_hppa_tdep): Add declaration. * i386-bsd-nat.c (_initialize_i386bsd_nat): Add declaration. * i386-cygwin-tdep.c (_initialize_i386_cygwin_tdep): Add declaration. * i386-darwin-nat.c (_initialize_i386_darwin_nat): Add declaration. * i386-darwin-tdep.c (_initialize_i386_darwin_tdep): Add declaration. * i386-dicos-tdep.c (_initialize_i386_dicos_tdep): Add declaration. * i386-fbsd-nat.c (_initialize_i386fbsd_nat): Add declaration. * i386-fbsd-tdep.c (_initialize_i386fbsd_tdep): Add declaration. * i386-gnu-nat.c (_initialize_i386gnu_nat): Add declaration. * i386-gnu-tdep.c (_initialize_i386gnu_tdep): Add declaration. * i386-go32-tdep.c (_initialize_i386_go32_tdep): Add declaration. * i386-linux-nat.c (_initialize_i386_linux_nat): Add declaration. * i386-linux-tdep.c (_initialize_i386_linux_tdep): Add declaration. * i386-nbsd-nat.c (_initialize_i386nbsd_nat): Add declaration. * i386-nbsd-tdep.c (_initialize_i386nbsd_tdep): Add declaration. * i386-nto-tdep.c (_initialize_i386nto_tdep): Add declaration. * i386-obsd-nat.c (_initialize_i386obsd_nat): Add declaration. * i386-obsd-tdep.c (_initialize_i386obsd_tdep): Add declaration. * i386-sol2-nat.c (_initialize_amd64_sol2_nat): Add declaration. * i386-sol2-tdep.c (_initialize_i386_sol2_tdep): Add declaration. * i386-tdep.c (_initialize_i386_tdep): Add declaration. * i386-windows-nat.c (_initialize_i386_windows_nat): Add declaration. * ia64-libunwind-tdep.c (_initialize_libunwind_frame): Add declaration. * ia64-linux-nat.c (_initialize_ia64_linux_nat): Add declaration. * ia64-linux-tdep.c (_initialize_ia64_linux_tdep): Add declaration. * ia64-tdep.c (_initialize_ia64_tdep): Add declaration. * ia64-vms-tdep.c (_initialize_ia64_vms_tdep): Add declaration. * infcall.c (_initialize_infcall): Add declaration. * infcmd.c (_initialize_infcmd): Add declaration. * inflow.c (_initialize_inflow): Add declaration. * infrun.c (_initialize_infrun): Add declaration. * interps.c (_initialize_interpreter): Add declaration. * iq2000-tdep.c (_initialize_iq2000_tdep): Add declaration. * jit.c (_initialize_jit): Add declaration. * language.c (_initialize_language): Add declaration. * linux-fork.c (_initialize_linux_fork): Add declaration. * linux-nat.c (_initialize_linux_nat): Add declaration. * linux-tdep.c (_initialize_linux_tdep): Add declaration. * linux-thread-db.c (_initialize_thread_db): Add declaration. * lm32-tdep.c (_initialize_lm32_tdep): Add declaration. * m2-lang.c (_initialize_m2_language): Add declaration. * m32c-tdep.c (_initialize_m32c_tdep): Add declaration. * m32r-linux-nat.c (_initialize_m32r_linux_nat): Add declaration. * m32r-linux-tdep.c (_initialize_m32r_linux_tdep): Add declaration. * m32r-tdep.c (_initialize_m32r_tdep): Add declaration. * m68hc11-tdep.c (_initialize_m68hc11_tdep): Add declaration. * m68k-bsd-nat.c (_initialize_m68kbsd_nat): Add declaration. * m68k-bsd-tdep.c (_initialize_m68kbsd_tdep): Add declaration. * m68k-linux-nat.c (_initialize_m68k_linux_nat): Add declaration. * m68k-linux-tdep.c (_initialize_m68k_linux_tdep): Add declaration. * m68k-tdep.c (_initialize_m68k_tdep): Add declaration. * machoread.c (_initialize_machoread): Add declaration. * macrocmd.c (_initialize_macrocmd): Add declaration. * macroscope.c (_initialize_macroscope): Add declaration. * maint-test-options.c (_initialize_maint_test_options): Add declaration. * maint-test-settings.c (_initialize_maint_test_settings): Add declaration. * maint.c (_initialize_maint_cmds): Add declaration. * mdebugread.c (_initialize_mdebugread): Add declaration. * memattr.c (_initialize_mem): Add declaration. * mep-tdep.c (_initialize_mep_tdep): Add declaration. * mi/mi-cmd-env.c (_initialize_mi_cmd_env): Add declaration. * mi/mi-cmds.c (_initialize_mi_cmds): Add declaration. * mi/mi-interp.c (_initialize_mi_interp): Add declaration. * mi/mi-main.c (_initialize_mi_main): Add declaration. * microblaze-linux-tdep.c (_initialize_microblaze_linux_tdep): Add declaration. * microblaze-tdep.c (_initialize_microblaze_tdep): Add declaration. * mips-fbsd-nat.c (_initialize_mips_fbsd_nat): Add declaration. * mips-fbsd-tdep.c (_initialize_mips_fbsd_tdep): Add declaration. * mips-linux-nat.c (_initialize_mips_linux_nat): Add declaration. * mips-linux-tdep.c (_initialize_mips_linux_tdep): Add declaration. * mips-nbsd-nat.c (_initialize_mipsnbsd_nat): Add declaration. * mips-nbsd-tdep.c (_initialize_mipsnbsd_tdep): Add declaration. * mips-sde-tdep.c (_initialize_mips_sde_tdep): Add declaration. * mips-tdep.c (_initialize_mips_tdep): Add declaration. * mips64-obsd-nat.c (_initialize_mips64obsd_nat): Add declaration. * mips64-obsd-tdep.c (_initialize_mips64obsd_tdep): Add declaration. * mipsread.c (_initialize_mipsread): Add declaration. * mn10300-linux-tdep.c (_initialize_mn10300_linux_tdep): Add declaration. * mn10300-tdep.c (_initialize_mn10300_tdep): Add declaration. * moxie-tdep.c (_initialize_moxie_tdep): Add declaration. * msp430-tdep.c (_initialize_msp430_tdep): Add declaration. * nds32-tdep.c (_initialize_nds32_tdep): Add declaration. * nios2-linux-tdep.c (_initialize_nios2_linux_tdep): Add declaration. * nios2-tdep.c (_initialize_nios2_tdep): Add declaration. * nto-procfs.c (_initialize_procfs): Add declaration. * objc-lang.c (_initialize_objc_language): Add declaration. * observable.c (_initialize_observer): Add declaration. * opencl-lang.c (_initialize_opencl_language): Add declaration. * or1k-linux-tdep.c (_initialize_or1k_linux_tdep): Add declaration. * or1k-tdep.c (_initialize_or1k_tdep): Add declaration. * osabi.c (_initialize_gdb_osabi): Add declaration. * osdata.c (_initialize_osdata): Add declaration. * p-valprint.c (_initialize_pascal_valprint): Add declaration. * parse.c (_initialize_parse): Add declaration. * ppc-fbsd-nat.c (_initialize_ppcfbsd_nat): Add declaration. * ppc-fbsd-tdep.c (_initialize_ppcfbsd_tdep): Add declaration. * ppc-linux-nat.c (_initialize_ppc_linux_nat): Add declaration. * ppc-linux-tdep.c (_initialize_ppc_linux_tdep): Add declaration. * ppc-nbsd-nat.c (_initialize_ppcnbsd_nat): Add declaration. * ppc-nbsd-tdep.c (_initialize_ppcnbsd_tdep): Add declaration. * ppc-obsd-nat.c (_initialize_ppcobsd_nat): Add declaration. * ppc-obsd-tdep.c (_initialize_ppcobsd_tdep): Add declaration. * printcmd.c (_initialize_printcmd): Add declaration. * probe.c (_initialize_probe): Add declaration. * proc-api.c (_initialize_proc_api): Add declaration. * proc-events.c (_initialize_proc_events): Add declaration. * proc-service.c (_initialize_proc_service): Add declaration. * procfs.c (_initialize_procfs): Add declaration. * producer.c (_initialize_producer): Add declaration. * psymtab.c (_initialize_psymtab): Add declaration. * python/python.c (_initialize_python): Add declaration. * ravenscar-thread.c (_initialize_ravenscar): Add declaration. * record-btrace.c (_initialize_record_btrace): Add declaration. * record-full.c (_initialize_record_full): Add declaration. * record.c (_initialize_record): Add declaration. * regcache-dump.c (_initialize_regcache_dump): Add declaration. * regcache.c (_initialize_regcache): Add declaration. * reggroups.c (_initialize_reggroup): Add declaration. * remote-notif.c (_initialize_notif): Add declaration. * remote-sim.c (_initialize_remote_sim): Add declaration. * remote.c (_initialize_remote): Add declaration. * reverse.c (_initialize_reverse): Add declaration. * riscv-fbsd-nat.c (_initialize_riscv_fbsd_nat): Add declaration. * riscv-fbsd-tdep.c (_initialize_riscv_fbsd_tdep): Add declaration. * riscv-linux-nat.c (_initialize_riscv_linux_nat): Add declaration. * riscv-linux-tdep.c (_initialize_riscv_linux_tdep): Add declaration. * riscv-tdep.c (_initialize_riscv_tdep): Add declaration. * rl78-tdep.c (_initialize_rl78_tdep): Add declaration. * rs6000-aix-tdep.c (_initialize_rs6000_aix_tdep): Add declaration. * rs6000-lynx178-tdep.c (_initialize_rs6000_lynx178_tdep): Add declaration. * rs6000-nat.c (_initialize_rs6000_nat): Add declaration. * rs6000-tdep.c (_initialize_rs6000_tdep): Add declaration. * run-on-main-thread.c (_initialize_run_on_main_thread): Add declaration. * rust-exp.y (_initialize_rust_exp): Add declaration. * rx-tdep.c (_initialize_rx_tdep): Add declaration. * s12z-tdep.c (_initialize_s12z_tdep): Add declaration. * s390-linux-nat.c (_initialize_s390_nat): Add declaration. * s390-linux-tdep.c (_initialize_s390_linux_tdep): Add declaration. * s390-tdep.c (_initialize_s390_tdep): Add declaration. * score-tdep.c (_initialize_score_tdep): Add declaration. * ser-go32.c (_initialize_ser_dos): Add declaration. * ser-mingw.c (_initialize_ser_windows): Add declaration. * ser-pipe.c (_initialize_ser_pipe): Add declaration. * ser-tcp.c (_initialize_ser_tcp): Add declaration. * ser-uds.c (_initialize_ser_socket): Add declaration. * ser-unix.c (_initialize_ser_hardwire): Add declaration. * serial.c (_initialize_serial): Add declaration. * sh-linux-tdep.c (_initialize_sh_linux_tdep): Add declaration. * sh-nbsd-nat.c (_initialize_shnbsd_nat): Add declaration. * sh-nbsd-tdep.c (_initialize_shnbsd_tdep): Add declaration. * sh-tdep.c (_initialize_sh_tdep): Add declaration. * skip.c (_initialize_step_skip): Add declaration. * sol-thread.c (_initialize_sol_thread): Add declaration. * solib-aix.c (_initialize_solib_aix): Add declaration. * solib-darwin.c (_initialize_darwin_solib): Add declaration. * solib-dsbt.c (_initialize_dsbt_solib): Add declaration. * solib-frv.c (_initialize_frv_solib): Add declaration. * solib-svr4.c (_initialize_svr4_solib): Add declaration. * solib-target.c (_initialize_solib_target): Add declaration. * solib.c (_initialize_solib): Add declaration. * source-cache.c (_initialize_source_cache): Add declaration. * source.c (_initialize_source): Add declaration. * sparc-linux-nat.c (_initialize_sparc_linux_nat): Add declaration. * sparc-linux-tdep.c (_initialize_sparc_linux_tdep): Add declaration. * sparc-nat.c (_initialize_sparc_nat): Add declaration. * sparc-nbsd-nat.c (_initialize_sparcnbsd_nat): Add declaration. * sparc-nbsd-tdep.c (_initialize_sparcnbsd_tdep): Add declaration. * sparc-obsd-tdep.c (_initialize_sparc32obsd_tdep): Add declaration. * sparc-sol2-tdep.c (_initialize_sparc_sol2_tdep): Add declaration. * sparc-tdep.c (_initialize_sparc_tdep): Add declaration. * sparc64-fbsd-nat.c (_initialize_sparc64fbsd_nat): Add declaration. * sparc64-fbsd-tdep.c (_initialize_sparc64fbsd_tdep): Add declaration. * sparc64-linux-nat.c (_initialize_sparc64_linux_nat): Add declaration. * sparc64-linux-tdep.c (_initialize_sparc64_linux_tdep): Add declaration. * sparc64-nat.c (_initialize_sparc64_nat): Add declaration. * sparc64-nbsd-nat.c (_initialize_sparc64nbsd_nat): Add declaration. * sparc64-nbsd-tdep.c (_initialize_sparc64nbsd_tdep): Add declaration. * sparc64-obsd-nat.c (_initialize_sparc64obsd_nat): Add declaration. * sparc64-obsd-tdep.c (_initialize_sparc64obsd_tdep): Add declaration. * sparc64-sol2-tdep.c (_initialize_sparc64_sol2_tdep): Add declaration. * sparc64-tdep.c (_initialize_sparc64_adi_tdep): Add declaration. * stabsread.c (_initialize_stabsread): Add declaration. * stack.c (_initialize_stack): Add declaration. * stap-probe.c (_initialize_stap_probe): Add declaration. * std-regs.c (_initialize_frame_reg): Add declaration. * symfile-debug.c (_initialize_symfile_debug): Add declaration. * symfile-mem.c (_initialize_symfile_mem): Add declaration. * symfile.c (_initialize_symfile): Add declaration. * symmisc.c (_initialize_symmisc): Add declaration. * symtab.c (_initialize_symtab): Add declaration. * target.c (_initialize_target): Add declaration. * target-connection.c (_initialize_target_connection): Add declaration. * target-dcache.c (_initialize_target_dcache): Add declaration. * target-descriptions.c (_initialize_target_descriptions): Add declaration. * thread.c (_initialize_thread): Add declaration. * tic6x-linux-tdep.c (_initialize_tic6x_linux_tdep): Add declaration. * tic6x-tdep.c (_initialize_tic6x_tdep): Add declaration. * tilegx-linux-nat.c (_initialize_tile_linux_nat): Add declaration. * tilegx-linux-tdep.c (_initialize_tilegx_linux_tdep): Add declaration. * tilegx-tdep.c (_initialize_tilegx_tdep): Add declaration. * tracectf.c (_initialize_ctf): Add declaration. * tracefile-tfile.c (_initialize_tracefile_tfile): Add declaration. * tracefile.c (_initialize_tracefile): Add declaration. * tracepoint.c (_initialize_tracepoint): Add declaration. * tui/tui-hooks.c (_initialize_tui_hooks): Add declaration. * tui/tui-interp.c (_initialize_tui_interp): Add declaration. * tui/tui-layout.c (_initialize_tui_layout): Add declaration. * tui/tui-regs.c (_initialize_tui_regs): Add declaration. * tui/tui-stack.c (_initialize_tui_stack): Add declaration. * tui/tui-win.c (_initialize_tui_win): Add declaration. * tui/tui.c (_initialize_tui): Add declaration. * typeprint.c (_initialize_typeprint): Add declaration. * ui-style.c (_initialize_ui_style): Add declaration. * unittests/array-view-selftests.c (_initialize_array_view_selftests): Add declaration. * unittests/child-path-selftests.c (_initialize_child_path_selftests): Add declaration. * unittests/cli-utils-selftests.c (_initialize_cli_utils_selftests): Add declaration. * unittests/common-utils-selftests.c (_initialize_common_utils_selftests): Add declaration. * unittests/copy_bitwise-selftests.c (_initialize_copy_bitwise_utils_selftests): Add declaration. * unittests/environ-selftests.c (_initialize_environ_selftests): Add declaration. * unittests/filtered_iterator-selftests.c (_initialize_filtered_iterator_selftests): Add declaration. * unittests/format_pieces-selftests.c (_initialize_format_pieces_selftests): Add declaration. * unittests/function-view-selftests.c (_initialize_function_view_selftests): Add declaration. * unittests/help-doc-selftests.c (_initialize_help_doc_selftests): Add declaration. * unittests/lookup_name_info-selftests.c (_initialize_lookup_name_info_selftests): Add declaration. * unittests/main-thread-selftests.c (_initialize_main_thread_selftests): Add declaration. * unittests/memory-map-selftests.c (_initialize_memory_map_selftests): Add declaration. * unittests/memrange-selftests.c (_initialize_memrange_selftests): Add declaration. * unittests/mkdir-recursive-selftests.c (_initialize_mkdir_recursive_selftests): Add declaration. * unittests/observable-selftests.c (_initialize_observer_selftest): Add declaration. * unittests/offset-type-selftests.c (_initialize_offset_type_selftests): Add declaration. * unittests/optional-selftests.c (_initialize_optional_selftests): Add declaration. * unittests/parse-connection-spec-selftests.c (_initialize_parse_connection_spec_selftests): Add declaration. * unittests/rsp-low-selftests.c (_initialize_rsp_low_selftests): Add declaration. * unittests/scoped_fd-selftests.c (_initialize_scoped_fd_selftests): Add declaration. * unittests/scoped_mmap-selftests.c (_initialize_scoped_mmap_selftests): Add declaration. * unittests/scoped_restore-selftests.c (_initialize_scoped_restore_selftests): Add declaration. * unittests/string_view-selftests.c (_initialize_string_view_selftests): Add declaration. * unittests/style-selftests.c (_initialize_style_selftest): Add declaration. * unittests/tracepoint-selftests.c (_initialize_tracepoint_selftests): Add declaration. * unittests/tui-selftests.c (_initialize_tui_selftest): Add declaration. * unittests/unpack-selftests.c (_initialize_unpack_selftests): Add declaration. * unittests/utils-selftests.c (_initialize_utils_selftests): Add declaration. * unittests/vec-utils-selftests.c (_initialize_vec_utils_selftests): Add declaration. * unittests/xml-utils-selftests.c (_initialize_xml_utils): Add declaration. * user-regs.c (_initialize_user_regs): Add declaration. * utils.c (_initialize_utils): Add declaration. * v850-tdep.c (_initialize_v850_tdep): Add declaration. * valops.c (_initialize_valops): Add declaration. * valprint.c (_initialize_valprint): Add declaration. * value.c (_initialize_values): Add declaration. * varobj.c (_initialize_varobj): Add declaration. * vax-bsd-nat.c (_initialize_vaxbsd_nat): Add declaration. * vax-nbsd-tdep.c (_initialize_vaxnbsd_tdep): Add declaration. * vax-tdep.c (_initialize_vax_tdep): Add declaration. * windows-nat.c (_initialize_windows_nat): Add declaration. (_initialize_check_for_gdb_ini): Add declaration. (_initialize_loadable): Add declaration. * windows-tdep.c (_initialize_windows_tdep): Add declaration. * x86-bsd-nat.c (_initialize_x86_bsd_nat): Add declaration. * x86-linux-nat.c (_initialize_x86_linux_nat): Add declaration. * xcoffread.c (_initialize_xcoffread): Add declaration. * xml-support.c (_initialize_xml_support): Add declaration. * xstormy16-tdep.c (_initialize_xstormy16_tdep): Add declaration. * xtensa-linux-nat.c (_initialize_xtensa_linux_nat): Add declaration. * xtensa-linux-tdep.c (_initialize_xtensa_linux_tdep): Add declaration. * xtensa-tdep.c (_initialize_xtensa_tdep): Add declaration. Change-Id: I13eec7e0ed2b3c427377a7bdb055cf46da64def9
2020-01-10Multi-target supportPedro Alves1-32/+43
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.
2020-01-10Some get_last_target_status tweaksPedro Alves1-2/+1
- Make get_last_target_status arguments optional. A following patch will add another argument to get_last_target_status (the event's target), and passing nullptr when we don't care for some piece of info is handier than creating dummy local variables. - Declare nullify_last_target_wait_ptid in a header, and remove the local extern declaration from linux-fork.c. gdb/ChangeLog: 2020-01-10 Pedro Alves <palves@redhat.com> * break-catch-sig.c (signal_catchpoint_print_it): Don't pass a ptid to get_last_target_status. * break-catch-syscall.c (print_it_catch_syscall): Don't pass a ptid to get_last_target_status. * infcmd.c (continue_command): Don't pass a target_waitstatus to get_last_target_status. (info_program_command): Don't pass a target_waitstatus to get_last_target_status. * infrun.c (init_wait_for_inferior): Use nullify_last_target_wait_ptid. (get_last_target_status): Handle nullptr arguments. (nullify_last_target_wait_ptid): Clear target_last_waitstatus. (print_stop_event): Don't pass a ptid to get_last_target_status. (normal_stop): Don't pass a ptid to get_last_target_status. * infrun.h (get_last_target_status, set_last_target_status): Move comments here and update. (nullify_last_target_wait_ptid): Declare. * linux-fork.c (fork_load_infrun_state): Remove local extern declaration of nullify_last_target_wait_ptid. * linux-nat.c (get_detach_signal): Don't pass a target_waitstatus to get_last_target_status.
2020-01-01Update copyright year range in all GDB files.Joel Brobecker1-1/+1
gdb/ChangeLog: Update copyright year range in all GDB files.
2019-11-26Add RAII class for blocking gdb signalsTom Tromey1-3/+4
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
2019-11-26Use safe_strerror instead of strerror where possibleChristian Biesinger1-1/+1
This provides threadsafety. Unfortunately, since libinproctrace.so does not link to gnulib, we can't use it there, especially since it still includes the gnulib headers (so it is difficult to directly call the system strerror_r). gdb/ChangeLog: 2019-11-26 Christian Biesinger <cbiesinger@google.com> * linux-nat.c (detach_one_lwp): Call safe_strerror instead of strerror. * nto-procfs.c (nto_procfs_target::create_inferior): Likewise. * windows-nat.c (windows_nat_target::create_inferior): Likewise. gdb/gdbserver/ChangeLog: 2019-11-26 Christian Biesinger <cbiesinger@google.com> * debug.c (debug_set_output): Call safe_strerror instead of strerror. * linux-low.c (attach_proc_task_lwp_callback): Likewise. (linux_kill_one_lwp): Likewise. (linux_detach_one_lwp): Likewise. (linux_wait_for_event_filtered): Likewise. (store_register): Likewise. * lynx-low.c (lynx_attach): Likewise. * mem-break.c (insert_memory_breakpoint): Likewise. (remove_memory_breakpoint): Likewise. (delete_fast_tracepoint_jump): Likewise. (set_fast_tracepoint_jump): Likewise. (uninsert_fast_tracepoint_jumps_at): Likewise. (reinsert_fast_tracepoint_jumps_at): Likewise. * nto-low.c (nto_xfer_memory): Likewise. (nto_resume): Likewise. Change-Id: I9e259cdcaa6e11bbcc4ee6bdc5b7127d73e11abe
2019-10-26[gdb] Fix more typos in comments (2)Tom de Vries1-2/+2
Fix typos in comments. NFC. Tested on x86_64-linux. gdb/ChangeLog: 2019-10-26 Tom de Vries <tdevries@suse.de> * aarch64-linux-tdep.c: Fix typos in comments. * aarch64-tdep.c: Same. * ada-lang.c: Same. * amd64-nat.c: Same. * arc-tdep.c: Same. * arch/aarch64-insn.c: Same. * block.c: Same. * breakpoint.h: Same. * btrace.h: Same. * c-varobj.c: Same. * cli/cli-decode.c: Same. * cli/cli-script.c: Same. * cli/cli-utils.h: Same. * coff-pe-read.c: Same. * coffread.c: Same. * compile/compile-cplus-symbols.c: Same. * compile/compile-object-run.c: Same. * completer.c: Same. * corelow.c: Same. * cp-support.c: Same. * demangle.c: Same. * dwarf-index-write.c: Same. * dwarf2-frame.c: Same. * dwarf2-frame.h: Same. * eval.c: Same. * frame-base.h: Same. * frame.h: Same. * gdbcmd.h: Same. * gdbtypes.h: Same. * gnu-nat.c: Same. * guile/scm-objfile.c: Same. * i386-tdep.c: Same. * i386-tdep.h: Same. * infcall.c: Same. * infcall.h: Same. * linux-nat.c: Same. * m68k-tdep.c: Same. * macroexp.c: Same. * memattr.c: Same. * mi/mi-cmd-disas.c: Same. * mi/mi-getopt.h: Same. * mi/mi-main.c: Same. * minsyms.c: Same. * nat/aarch64-sve-linux-sigcontext.h: Same. * objfiles.h: Same. * ppc-linux-nat.c: Same. * ppc-linux-tdep.c: Same. * ppc-tdep.h: Same. * progspace.h: Same. * prologue-value.h: Same. * python/py-evtregistry.c: Same. * python/py-instruction.h: Same. * record-btrace.c: Same. * record-full.c: Same. * remote.c: Same. * rs6000-tdep.c: Same. * ser-tcp.c: Same. * sol-thread.c: Same. * sparc-sol2-tdep.c: Same. * sparc64-tdep.c: Same. * stabsread.c: Same. * symfile.c: Same. * symtab.h: Same. * target.c: Same. * tracepoint.c: Same. * tui/tui-data.h: Same. * tui/tui-io.c: Same. * tui/tui-win.c: Same. * tui/tui.c: Same. * unittests/rsp-low-selftests.c: Same. * user-regs.h: Same. * utils.c: Same. * utils.h: Same. * valarith.c: Same. * valops.c: Same. * valprint.c: Same. * valprint.h: Same. * value.c: Same. * value.h: Same. * varobj.c: Same. * x86-nat.h: Same. * xtensa-tdep.c: Same. gdb/gdbserver/ChangeLog: 2019-10-26 Tom de Vries <tdevries@suse.de> * linux-aarch64-low.c: Fix typos in comments. * linux-arm-low.c: Same. * linux-low.c: Same. * linux-ppc-low.c: Same. * proc-service.c: Same. * regcache.h: Same. * server.c: Same. * tracepoint.c: Same. * win32-low.c: Same. gdb/stubs/ChangeLog: 2019-10-26 Tom de Vries <tdevries@suse.de> * ia64vms-stub.c: Fix typos in comments. * m32r-stub.c: Same. * m68k-stub.c: Same. * sh-stub.c: Same. gdb/testsuite/ChangeLog: 2019-10-26 Tom de Vries <tdevries@suse.de> * gdb.base/bigcore.c: Fix typos in comments. * gdb.base/ctf-ptype.c: Same. * gdb.base/long_long.c: Same. * gdb.dwarf2/dw2-op-out-param.S: Same. * gdb.python/py-evthreads.c: Same. * gdb.reverse/i387-stack-reverse.c: Same. * gdb.trace/tfile.c: Same. * lib/compiler.c: Same. * lib/compiler.cc: Same. Change-Id: I8573d84a577894270179ae30f46c48d806fc1beb
2019-10-18[gdb] Fix more typos in commentsTom de Vries1-1/+1
Fix typos in comments. NFC. Tested on x86_64-linux. gdb/ChangeLog: 2019-10-18 Tom de Vries <tdevries@suse.de> * aarch64-tdep.c: Fix typos in comments. * ada-lang.c: Same. * ada-tasks.c: Same. * alpha-tdep.c: Same. * alpha-tdep.h: Same. * amd64-nat.c: Same. * amd64-windows-tdep.c: Same. * arc-tdep.c: Same. * arc-tdep.h: Same. * arch-utils.c: Same. * arm-nbsd-tdep.c: Same. * arm-tdep.c: Same. * ax-gdb.c: Same. * blockframe.c: Same. * btrace.c: Same. * c-varobj.c: Same. * coff-pe-read.c: Same. * coffread.c: Same. * cris-tdep.c: Same. * darwin-nat.c: Same. * dbxread.c: Same. * dcache.c: Same. * disasm.c: Same. * dtrace-probe.c: Same. * dwarf-index-write.c: Same. * dwarf2-frame-tailcall.c: Same. * dwarf2-frame.c: Same. * dwarf2read.c: Same. * eval.c: Same. * exceptions.c: Same. * fbsd-tdep.c: Same. * findvar.c: Same. * frame.c: Same. * frv-tdep.c: Same. * gnu-v3-abi.c: Same. * go32-nat.c: Same. * h8300-tdep.c: Same. * hppa-tdep.c: Same. * i386-linux-tdep.c: Same. * i386-tdep.c: Same. * ia64-libunwind-tdep.c: Same. * ia64-tdep.c: Same. * infcmd.c: Same. * infrun.c: Same. * linespec.c: Same. * linux-nat.c: Same. * linux-thread-db.c: Same. * machoread.c: Same. * mdebugread.c: Same. * mep-tdep.c: Same. * mn10300-tdep.c: Same. * namespace.c: Same. * objfiles.c: Same. * opencl-lang.c: Same. * or1k-tdep.c: Same. * osabi.c: Same. * ppc-linux-nat.c: Same. * ppc-linux-tdep.c: Same. * ppc-sysv-tdep.c: Same. * printcmd.c: Same. * procfs.c: Same. * record-btrace.c: Same. * record-full.c: Same. * remote-fileio.c: Same. * remote.c: Same. * rs6000-tdep.c: Same. * s12z-tdep.c: Same. * score-tdep.c: Same. * ser-base.c: Same. * ser-go32.c: Same. * skip.c: Same. * sol-thread.c: Same. * solib-svr4.c: Same. * solib.c: Same. * source.c: Same. * sparc-nat.c: Same. * sparc-sol2-tdep.c: Same. * sparc-tdep.c: Same. * sparc64-tdep.c: Same. * stabsread.c: Same. * stack.c: Same. * symfile.c: Same. * symtab.c: Same. * target-descriptions.c: Same. * target-float.c: Same. * thread.c: Same. * utils.c: Same. * valops.c: Same. * valprint.c: Same. * value.c: Same. * varobj.c: Same. * windows-nat.c: Same. * xcoffread.c: Same. * xstormy16-tdep.c: Same. * xtensa-tdep.c: Same. Change-Id: I5175f1b107bfa4e1cdd4a3361ccb4739e53c75c4
2019-10-03gdb: Don't ignore all SIGSTOP when the signal handler is set to passAndrew Burgess1-1/+4
It was observed that in a multi-threaded application on GNU/Linux, that if the user has set the SIGSTOP to be pass (using GDB's handle command) then the inferior would hang upon hitting a breakpoint. What happens is that when a thread hits the breakpoint GDB tries to stop all of the other threads by sending them a SIGSTOP and setting the stop_requested flag in the target_ops structure - this can be seen in infrun.c:stop_all_threads. GDB then waits for all of the other threads to stop. When the SIGSTOP event arrives we eventually end up in linux-nat.c:linux_nat_filter_event, which has the job of deciding if the event we're looking at (the SIGSTOP arriving in this case) is something that should be reported back to the core of GDB. One of the final actions of this function is to check if we stopped due to a signal, and if we did, and the signal has been set to 'pass' by the user then we ignore the event and resume the thread. This code already has some conditions in place that mean the event is reported to GDB even if the signal is in the set of signals to be passed to the inferior. In this commit I extend this condition such that: If the signal is a SIGSTOP, and the thread's stop_requested flag is set (indicating we're waiting for the thread to stop with a SIGSTOP) then we should report this SIGSTOP to GDB and not pass it to the inferior. With this change in place the test now passes. Regression tested on x86-64 GNU/Linux with no regressions. gdb/ChangeLog: * linux-nat.c (linux_nat_filter_event): Don't ignore SIGSTOP if we have just sent the thread a SIGSTOP and are waiting for it to arrive. gdb/testsuite/ChangeLog: * gdb.threads/stop-with-handle.c: New file. * gdb.threads/stop-with-handle.exp: New file.
2019-09-26Revert "Improve ptrace-error detection on Linux targets"Sergio Durigan Junior1-7/+2
This reverts commit 381beca6146ac68b57edf47d28cdb335fbd11635. The patch hasn't been fully reviewed yet, and Pedro would like to see more fixes.
2019-09-26Improve ptrace-error detection on Linux targetsSergio Durigan Junior1-2/+7
In Fedora GDB, we carry the following patch: https://src.fedoraproject.org/rpms/gdb/blob/8ac06474ff1e2aa4920d14e0666b083eeaca8952/f/gdb-attach-fail-reasons-5of5.patch Its purpose is to try to detect a specific scenario where SELinux's 'deny_ptrace' option is enabled, which prevents GDB from ptrace'ing in order to debug the inferior (PTRACE_ATTACH and PTRACE_TRACEME will fail with EACCES in this case). I like the idea of improving error detection and providing more information to the user (a simple "Permission denied" can be really frustrating), but I don't fully agree with the way the patch was implemented: it makes GDB link against libselinux only for the sake of consulting the 'deny_ptrace' setting, and then prints a warning if ptrace failed and this setting is on. My first thought (and attempt) was to make GDB print a generic warning when a ptrace error happened; this message would just point the user to our documentation, where she could find more information about possible causes for the error (and try to diagnose/fix the problem). This proved to be too simple, and I was convinced that it is actually a good idea to go the extra kilometre and try to pinpoint the specific problem (or problems) preventing ptrace from working, as well as provide useful suggestions on how the user can fix things. Here is the patch I came up with. It implements a new function, 'linux_ptrace_restricted_fail_reason', which does a few things to check what's wrong with ptrace: - It dlopen's "libselinux.so.1" and checks if the "deny_ptrace" option is enabled. - It reads the contents of "/proc/sys/kernel/yama/ptrace_scope" and checks if it's different than 0. For each of these checks, if it succeeds, the user will see a message informing about the restriction in place, and how it can be disabled. For example, if "deny_ptrace" is enabled, the user will see: # gdb /usr/bin/true ... Starting program: /usr/bin/true warning: Could not trace the inferior process. warning: ptrace: Permission denied The SELinux 'deny_ptrace' option is enabled and preventing GDB from using 'ptrace'. You can disable it by executing (as root): setsebool deny_ptrace off If you are debugging the inferior remotely, the ptrace restriction(s) need to be disabled in the target system (e.g., where GDBserver is running). During startup program exited with code 127. (gdb) In case "/proc/sys/kernel/yama/ptrace_scope" is > 0: # gdb /usr/bin/true ... Starting program: /usr/bin/true warning: Could not trace the inferior process. warning: ptrace: Operation not permitted The Linux kernel's Yama ptrace scope is in effect, which can prevent GDB from using 'ptrace'. You can disable it by executing (as root): echo 0 > /proc/sys/kernel/yama/ptrace_scope If you are debugging the inferior remotely, the ptrace restriction(s) need to be disabled in the target system (e.g., where GDBserver is running). During startup program exited with code 127. (gdb) If both restrictions are enabled, both messages will show up. This works for gdbserver as well, and actually fixes a latent bug I found: when ptrace is restricted, gdbserver would hang due to an unchecked ptrace call: # gdbserver :9988 /usr/bin/true gdbserver: linux_ptrace_test_ret_to_nx: Cannot PTRACE_TRACEME: Operation not permitted gdbserver: linux_ptrace_test_ret_to_nx: status 256 is not WIFSTOPPED! gdbserver: linux_ptrace_test_ret_to_nx: failed to kill child pid 2668100 No such process [ Here you would have to issue a C-c ] Now, you will see: # gdbserver :9988 /usr/bin/true gdbserver: linux_ptrace_test_ret_to_nx: Cannot PTRACE_TRACEME: Permission denied gdbserver: linux_ptrace_test_ret_to_nx: status 256 is not WIFSTOPPED! gdbserver: linux_ptrace_test_ret_to_nx: failed to kill child pid 2766868 No such process gdbserver: Could not trace the inferior process. gdbserver: ptrace: Permission denied The SELinux 'deny_ptrace' option is enabled and preventing GDB from using 'ptrace'. You can disable it by executing (as root): setsebool deny_ptrace off If you are debugging the inferior remotely, the ptrace restriction(s) need to be disabled in the target system (e.g., where GDBserver is running). # (I decided to keep all the other messages, even though I find them a bit distracting). If GDB can't determine the cause for the failure, it will still print the generic error message which tells the user to check our documentation: There might be restrictions preventing ptrace from working. Please see the appendix "Linux kernel ptrace restrictions" in the GDB documentation for more details. If you are debugging the inferior remotely, the ptrace restriction(s) need to be disabled in the target system (e.g., where GDBserver is running). This means that the patch expands our documentation and creates a new appendix section named "Linux kernel ptrace restrictions", with sub-sections for each possible restriction that might be in place. Notice how, on every message, we instruct the user to "do the right thing" if gdbserver is being used. This is because if the user started gdbserver *before* any ptrace restriction was in place, and then, for some reason, one or more restrictions get enabled, then the error message will be displayed both on gdbserver *and* on the connected GDB. Since the user will be piloting GDB, it's important to explicitly say that the ptrace restrictions are enabled in the target, where gdbserver is running. The current list of possible restrictions is: - SELinux's 'deny_ptrace' option (detected). - YAMA's /proc/sys/kernel/yama/ptrace_scope setting (detected). - seccomp on Docker containers (I couldn't find how to detect). It's important to mention that all of this is Linux-specific; as far as I know, SELinux, YAMA and seccomp are Linux-only features. I tested this patch locally, on my Fedora 30 machine (actually, a Fedora Rawhide VM), but I'm not proposing a testcase for it because of the difficulty of writing one. WDYT? gdb/doc/ChangeLog: 2019-09-26 Sergio Durigan Junior <sergiodj@redhat.com> * gdb.texinfo (Linux kernel ptrace restrictions): New appendix section. gdb/ChangeLog: 2019-09-26 Sergio Durigan Junior <sergiodj@redhat.com> Jan Kratochvil <jan.kratochvil@redhat.com> Pedro Alves <palves@redhat.com> * gdbsupport/gdb-dlfcn.h (gdb_dlopen): Update comment and mention that the function throws an error. * inf-ptrace.c (default_inf_ptrace_me_fail_reason): New function. (inf_ptrace_me_fail_reason): New variable. (inf_ptrace_me): Update call to 'trace_start_error_with_name'. * inf-ptrace.h (inf_ptrace_me_fail_reason): New variable. * linux-nat.c (attach_proc_task_lwp_callback): Call 'linux_ptrace_attach_fail_reason_lwp'. (linux_nat_target::attach): Update call to 'linux_ptrace_attach_fail_reason'. (_initialize_linux_nat): Set 'inf_ptrace_me_fail_reason'. * nat/fork-inferior.c (trace_start_error_with_name): Add optional 'append' argument. * nat/fork-inferior.h (trace_start_error_with_name): Update prototype. * nat/linux-ptrace.c: Include "gdbsupport/gdb-dlfcn.h", "gdbsupport/filestuff.h" and "nat/fork-inferior.h". (selinux_ftype): New typedef. (linux_ptrace_restricted_fail_reason): New function. (linux_ptrace_attach_fail_reason_1): New function. (linux_ptrace_attach_fail_reason): Change first argument type from 'ptid_t' to 'pid_t'. Call 'linux_ptrace_attach_fail_reason_1' and 'linux_ptrace_restricted_fail_reason'. (linux_ptrace_attach_fail_reason_lwp): New function. (linux_ptrace_me_fail_reason): New function. (errno_pipe): New variable. (linux_fork_to_function): Initialize pipe before forking. (linux_child_function): Deal with errno-passing from child. Handle ptrace error. (linux_check_child_ptrace_errno): New function. (linux_check_child_ptrace_errno): Call 'linux_check_child_ptrace_errno'. * nat/linux-ptrace.h (linux_ptrace_attach_fail_reason): Update prototype. (linux_ptrace_attach_fail_reason_lwp): New prototype. (linux_ptrace_me_fail_reason): New prototype. * remote.c (extended_remote_target::attach): Handle error message passed by the server when attach fails. gdb/gdbserver/ChangeLog: 2019-09-26 Sergio Durigan Junior <sergiodj@redhat.com> Pedro Alves <palves@redhat.com> * linux-low.c (linux_ptrace_fun): Call 'linux_ptrace_me_fail_reason'. (attach_proc_task_lwp_callback): Call 'linux_ptrace_attach_fail_reason_lwp'. (linux_attach): Call 'linux_ptrace_attach_fail_reason'. * server.c (handle_v_attach): Use try..catch when calling 'attach_inferior', and send an error message to the client when needed. * thread-db.c (attach_thread): Call 'linux_ptrace_attach_fail_reason_lwp'.
2019-09-20Remove Cell Broadband Engine debugging supportUlrich Weigand1-129/+0
This patch implements removal of Cell/B.E. support, including - Support for the spu-*-* target - Support for native stand-alone SPU debugging - Support for integrated debugging of combined PPU/SPU applications - Remote debugging (gdbserver) support for all the above. The patch also removes the TARGET_OBJECT_SPU target object type, as this is available only on Cell/B.E. targets, including - Native Linux support - Core file support (including core file generation) - Remote target support, including removal of the qXfer:spu:read and qXfer:spu:write remote protocal packets and associated support in gdbserver. gdb/ChangeLog 2019-09-20 Ulrich Weigand <uweigand@de.ibm.com> * NEWS: Mention that Cell/B.E. debugging support was removed. * MAINTAINERS: Remove spu target. * config/djgpp/fnchange.lst: Remove entries for removed files. * Makefile.in (ALL_TARGET_OBS): Remove solib-spu.o, spu-multiarch.o, and spu-tdep.o. (HFILES_NO_SRCDIR): Remove solib-spu.h and spu-tdep.h. (ALLDEPFILES): Remove solib-spu.c, spu-linux-nat.c, spu-multiarch.c, and spu-tdep.c. * spu-linux-nat.c: Remove file. * spu-multiarch.c: Remove file. * spu-tdep.c: Remove file. * spu-tdep.h: Remove file. * solib-spu.c: Remove file. * solib-spu.h: Remove file. * configure.host (powerpc64*-*-linux*): Remove Cell/B.E. support. * configure.nat (spu-linux): Remove. * configure.tgt (powerpc*-*-linux*): Remove solib-spu.o and solib-multiarch.o from gdb_target_obs. (spu*-*-*): Remove. * arch/ppc-linux-common.h (struct ppc_linux_features): Remove "cell" feature flag. (ppc_linux_no_features): Update. * arch/ppc-linux-common.c (ppc_linux_match_description): Remove Cell/B.E. support. * arch/ppc-linux-tdesc.h (tdesc_powerpc_cell32l): Remove declaration. (tdesc_powerpc_cell64l): Likewise. * nat/ppc-linux.h (PPC_FEATURE_CELL): Remove. * ppc-linux-nat.c (ppc_linux_nat_target::read_description): Remove Cell/B.E. support. * ppc-linux-tdep.h: Do not include "solib-spu.h" or "spu-tdep.h". Do not include "features/rs6000/powerpc-cell32l.c" or "features/rs6000/powerpc-cell64l.c". (ppc_linux_spu_section): Remove. (ppc_linux_core_read_description): Remove Cell/B.E. support. (spe_context_objfile, spe_context_lm_addr, spe_context_offset, spe_context_cache_ptid, spe_context_cache_ptid): Remove. (ppc_linux_spe_context_lookup): Remove. (ppc_linux_spe_context_inferior_created): Remove. (ppc_linux_spe_context_solib_loaded): Remove. (ppc_linux_spe_context_solib_unloaded): Remove. (ppc_linux_spe_context): Remove. (struct ppu2spu_cache): Remove. (ppu2spu_prev_arch, ppu2spu_this_id, ppu2spu_prev_register): Remove. (struct ppu2spu_data): Remove. (ppu2spu_unwind_register, ppu2spu_sniffer, ppu2spu_dealloc_cache, ppu2spu_unwind): Remove. (ppc_linux_init_abi): Remove Cell/B.E. support. * rs6000-tdep.h (rs6000_gdbarch_init): Remove Cell/B.E. support. * features/Makefile (rs6000/powerpc-cell32l-expedite): Remove. (rs6000/powerpc-cell64l-expedite): Likewise (WHICH): Remove rs6000/powerpc-cell32l and rs6000/powerpc-cell64l. (XMLTOC): Remove rs6000/powerpc-cell32l.xml and rs6000/powerpc-cell64l.xml. * features/rs6000/powerpc-cell32l.xml: Remove. * features/rs6000/powerpc-cell64l.xml: Likewise. * features/rs6000/powerpc-cell32l.c: Remove generated file. * features/rs6000/powerpc-cell64l.c: Likewise. * regformats/rs6000/powerpc-cell32l.dat: Remove generated file. * regformats/rs6000/powerpc-cell64l.dat: Likewise. * regformats/reg-spu.dat: Remove. * target.h (enum target_object): Remove TARGET_OBJECT_SPU. * corelow.c (struct spuid_list): Remove. (add_to_spuid_list): Remove. (core_target::xfer_partial): Remove support for TARGET_OBJECT_SPU. * remote.c (PACKET_qXfer_spu_read, PACKET_qXfer_spu_write): Remove. (remote_protocol_features): Remove associated entries. (_initialize_remote): No longer initialize them. (remote_target::xfer_partial): Remove support for TARGET_OBJECT_SPU. * linux-nat.c (SPUFS_MAGIC): Remove. (linux_proc_xfer_spu): Remove. (spu_enumerate_spu_ids): Remove. (linux_nat_target::xfer_partial): Remove support for TARGET_OBJECT_SPU. * linux-tdep.c (-linux_spu_make_corefile_notes): Remove. (linux_make_corefile_notes): No longer call it. * regcache.c (cooked_read_test): Remove bfd_arch_spu special case. (cooked_write_test): Likewise. gdb/doc/ChangeLog 2019-09-20 Ulrich Weigand <uweigand@de.ibm.com> * doc/gdb.texinfo (Remote Configuration): Remove documentation for qXfer:spu:read and qXfer:spu:write. (General Query Packets): Likewise. (Cell Broadband Engine SPU architecture): Remove subsection. gdb/gdbserver/ChangeLog 2019-09-20 Ulrich Weigand <uweigand@de.ibm.com> * configure.srv (ipa_ppc_linux_regobj): Remove powerpc-cell32l-ipa.o and powerpc-cell64l-ipa.o. (powerpc*-*-linux*): Remove powerpc-cell32l.o and powerpc-cell64l.o from srv_regobj. Remove rs6000/powerpc-cell32l.xml and rs6000/powerpc-cell64l.xml from srv_xmlfiles. (spu*-*-*): Remove. * spu-low.c: Remove file. * linux-ppc-low.c (INSTR_SC, NR_spu_run): Remove. (parse_spufs_run): Remove. (ppc_get_pc): Remove Cell/B.E. support. (ppc_set_pc): Likewise. (ppc_breakpoint_at): Likewise. (ppc_arch_setup): Likewise. (ppc_get_ipa_tdesc_idx): Do not handle tdesc_powerpc_cell64l or tdesc_powerpc_cell32l. (initialize_low_arch): Do not call init_registers_powerpc_cell64l or init_registers_powerpc_cell32l. * linux-ppc-ipa.c (get_ipa_tdesc): Do not handle PPC_TDESC_CELL. (initialize_low_tracepoint): Do not call init_registers_powerpc_cell64l or init_registers_powerpc_cell32l. * linux-ppc-tdesc-init.h (PPC_TDESC_CELL): Mark as unused. (init_registers_powerpc_cell32l): Remove prototype. (init_registers_powerpc_cell64l): Likewise. * target.h (struct target_ops): Remove qxfer_spu member. * server.c (handle_qxfer_spu): Remove. (qxfer_packets): Remove entry for "spu". (handle_query): No longer support qXfer:spu:read or qXfer:spu:write. * linux-low.c (SPUFS_MAGIC): Remove. (spu_enumerate_spu_ids): Remove. (linux_qxfer_spu): Remove. (linux_target_ops): Remove qxfer_spu member. * lynx-low.c (lynx_target_ops): Remove qxfer_spu member. * nto-low.c (nto_target_ops): Remove qxfer_spu member. * win32-low.c (win32_target_ops): Remove qxfer_spu member. gdb/testsuite/ChangeLog 2019-09-20 Ulrich Weigand <uweigand@de.ibm.com> * gdb.arch/spu-info.exp: Remove file. * gdb.arch/spu-info.c: Remove file. * gdb.arch/spu-ls.exp: Remove file. * gdb.arch/spu-ls.c: Remove file. * gdb.asm/asm-source.exp: Remove support for spu*-*-*. * gdb.asm/spu.inc: Remove file. * gdb.base/dump.exp: Remove support for spu*-*-*. * gdb.base/stack-checking.exp: Likewise. * gdb.base/overlays.exp: Likewise. * gdb.base/ovlymgr.c: Likewise. * gdb.base/spu.ld: Remove file. * gdb.cp/bs15503.exp: Remove support for spu*-*-*. * gdb.cp/cpexprs.exp: Likewise. * gdb.cp/exception.exp: Likewise. * gdb.cp/gdb2495.exp: Likewise. * gdb.cp/mb-templates.exp: Likewise. * gdb.cp/pr9167.exp: Likewise. * gdb.cp/userdef.exp: Likewise. * gdb.xml/tdesc-regs.exp: Remove support for spu*-*-*. * gdb.cell: Remove directory. * lib/cell.exp: Remove file.
2019-07-09Rename common to gdbsupportTom Tromey1-6/+6
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.
2019-06-16gdb: Remove unused signal maskAndrew Burgess1-6/+0
In the following commit: commit 7feb7d068ae65557ede03c36468ebac61b0939ca Date: Mon May 11 12:08:03 2009 +0000 The last useful uses of normal_mask in linux-nat.c were removed, since then this variable has sat around being initialised, but never used. There should be no user visible changes after this commit. gdb/ChangeLog: * linux-nat.c (normal_mask): Delete. (_initialize_linux_nat): Don't initialise normal_mask.
2019-04-08Replace throw_exception with throw in some casesTom Tromey1-3/+3
This replaces throw_exception with "throw;" when possible. This was written by script. The rule that is followed is that uses of the form: catch (... &name) { ... throw_exception (name); } ... can be rewritten. This should always be safe, because exceptions are caught by const reference, and therefore can't be modified in the body of the catch. gdb/ChangeLog 2019-04-08 Tom Tromey <tom@tromey.com> * valops.c (value_rtti_indirect_type): Replace throw_exception with throw. * tracefile-tfile.c (tfile_target_open): Replace throw_exception with throw. * thread.c (thr_try_catch_cmd): Replace throw_exception with throw. * target.c (target_translate_tls_address): Replace throw_exception with throw. * stack.c (frame_apply_command_count): Replace throw_exception with throw. * solib-spu.c (append_ocl_sos): Replace throw_exception with throw. * s390-tdep.c (s390_frame_unwind_cache): Replace throw_exception with throw. * rs6000-tdep.c (rs6000_frame_cache) (rs6000_epilogue_frame_cache): Replace throw_exception with throw. * remote.c: Replace throw_exception with throw. * record-full.c (record_full_message, record_full_wait_1) (record_full_restore): Replace throw_exception with throw. * record-btrace.c: (get_thread_current_frame_id, record_btrace_start_replaying) (cmd_record_btrace_bts_start, cmd_record_btrace_pt_start) (cmd_record_btrace_start): Replace throw_exception with throw. * parse.c (parse_exp_in_context_1): Replace throw_exception with throw. * linux-nat.c (detach_one_lwp, linux_resume_one_lwp) (resume_stopped_resumed_lwps): Replace throw_exception with throw. * linespec.c: (find_linespec_symbols): Replace throw_exception with throw. * infrun.c (displaced_step_prepare, resume): Replace throw_exception with throw. * infcmd.c (post_create_inferior): Replace throw_exception with throw. * inf-loop.c (inferior_event_handler): Replace throw_exception with throw. * i386-tdep.c (i386_frame_cache, i386_epilogue_frame_cache) (i386_sigtramp_frame_cache): Replace throw_exception with throw. * frame.c (frame_unwind_pc, get_prev_frame_if_no_cycle) (get_prev_frame_always, get_frame_pc_if_available) (get_frame_address_in_block_if_available, get_frame_language): Replace throw_exception with throw. * frame-unwind.c (frame_unwind_try_unwinder): Replace throw_exception with throw. * eval.c (fetch_subexp_value, evaluate_var_value) (evaluate_funcall, evaluate_subexp_standard): Replace throw_exception with throw. * dwarf2loc.c (call_site_find_chain) (dwarf2_evaluate_loc_desc_full, dwarf2_locexpr_baton_eval): Replace throw_exception with throw. * dwarf2-frame.c (dwarf2_frame_cache): Replace throw_exception with throw. * darwin-nat.c (darwin_attach_pid): Replace throw_exception with throw. * cp-abi.c (baseclass_offset): Replace throw_exception with throw. * completer.c (complete_line_internal): Replace throw_exception with throw. * compile/compile-object-run.c (compile_object_run): Replace throw_exception with throw. * cli/cli-script.c (process_next_line): Replace throw_exception with throw. * btrace.c (btrace_compute_ftrace_pt, btrace_compute_ftrace) (btrace_enable, btrace_maint_update_pt_packets): Replace throw_exception with throw. * breakpoint.c (create_breakpoint, save_breakpoints): Replace throw_exception with throw. * break-catch-throw.c (re_set_exception_catchpoint): Replace throw_exception with throw. * amd64-tdep.c (amd64_frame_cache, amd64_sigtramp_frame_cache) (amd64_epilogue_frame_cache): Replace throw_exception with throw. * aarch64-tdep.c (aarch64_make_prologue_cache) (aarch64_make_stub_cache): Replace throw_exception with throw. gdb/gdbserver/ChangeLog 2019-04-08 Tom Tromey <tom@tromey.com> * linux-low.c (linux_detach_one_lwp): Replace throw_exception with throw. (linux_resume_one_lwp): Likewise.
2019-04-08Rename gdb exception typesTom Tromey1-4/+4
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.
2019-04-08Rewrite TRY/CATCHTom Tromey1-12/+8
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.
2019-04-08Make exceptions use std::string and be self-managingTom Tromey1-2/+3
This changes the exception's "message" member to be a shared_ptr wrapping a std::string. This allows removing the stack of exception messages, because now exceptions will self-destruct when needed. This also adds a noexcept copy constructor and operator= to gdb_exception, plus a "what" method. gdb/ChangeLog 2019-04-08 Tom Tromey <tom@tromey.com> * xml-support.c (gdb_xml_parser::parse): Update. * x86-linux-nat.c (x86_linux_nat_target::enable_btrace): Update. * value.c (show_convenience): Update. * unittests/cli-utils-selftests.c (test_number_or_range_parser) (test_parse_flags_qcs): Update. * thread.c (thr_try_catch_cmd): Update. * target.c (target_translate_tls_address): Update. * stack.c (print_frame_arg, read_frame_local, read_frame_arg) (info_frame_command_core, frame_apply_command_count): Update. * rust-exp.y (rust_lex_exception_test): Update. * riscv-tdep.c (riscv_print_one_register_info): Update. * remote.c (remote_target::enable_btrace): Update. * record-btrace.c (record_btrace_enable_warn): Update. * python/py-utils.c (gdbpy_convert_exception): Update. * printcmd.c (do_one_display, print_variable_and_value): Update. * mi/mi-main.c (mi_print_exception): Update. * mi/mi-interp.c (mi_cmd_interpreter_exec): Use SCOPE_EXIT. * mi/mi-cmd-stack.c (list_arg_or_local): Update. * linux-nat.c (linux_nat_target::attach): Update. * linux-fork.c (class scoped_switch_fork_info): Update. * infrun.c (displaced_step_prepare): Update. * infcall.c (call_function_by_hand_dummy): Update. * guile/scm-exception.c (gdbscm_scm_from_gdb_exception): Update. * gnu-v3-abi.c (print_one_vtable): Update. * frame.c (get_prev_frame_always): Update. * f-valprint.c (info_common_command_for_block): Update. * exec.c (try_open_exec_file): Update. * exceptions.c (print_exception, exception_print) (exception_fprintf, exception_print_same): Update. * dwarf2-frame.c (dwarf2_build_frame_info): Update. * dwarf-index-cache.c (index_cache::store) (index_cache::lookup_gdb_index): Update. * darwin-nat.c (maybe_cache_shell): Update. * cp-valprint.c (cp_print_value_fields): Update. * compile/compile-cplus-symbols.c (gcc_cplus_convert_symbol) (gcc_cplus_symbol_address): Update. * compile/compile-c-symbols.c (gcc_convert_symbol) (gcc_symbol_address, generate_c_for_for_one_variable): Update. * common/selftest.c: Update. * common/common-exceptions.h (struct gdb_exception) <message>: Now a std::string. (exception_try_scope_entry, exception_try_scope_exit): Don't declare. (struct exception_try_scope): Remove. (TRY): Don't use exception_try_scope. (struct gdb_exception): Add constructor, operator=. <what>: New method. (struct gdb_exception_RETURN_MASK_ALL) (struct gdb_exception_RETURN_MASK_ERROR) (struct gdb_exception_RETURN_MASK_QUIT): Add constructor. (struct gdb_quit_bad_alloc): Update. * common/common-exceptions.c (exception_none): Change initializer. (struct catcher) <state, exception>: Initialize inline. <prev>: Remove member. (current_catcher): Remove. (catchers): New global. (exceptions_state_mc_init): Simplify. (catcher_pop): Remove. (exceptions_state_mc, exceptions_state_mc_catch): Update. (try_scope_depth, exception_try_scope_entry) (exception_try_scope_exit): Remove. (throw_exception_sjlj): Update. (exception_messages, exception_messages_size): Remove. (throw_it): Simplify. (gdb_exception_sliced_copy): Remove. (throw_exception_cxx): Update. * cli/cli-script.c (script_from_file): Update. * breakpoint.c (insert_bp_location, update_breakpoint_locations): Update. * ada-valprint.c (ada_val_print): Update. * ada-lang.c (ada_to_fixed_type_1, ada_exception_name_addr) (create_excep_cond_exprs): Update. gdb/gdbserver/ChangeLog 2019-04-08 Tom Tromey <tom@tromey.com> * server.c (handle_btrace_general_set, handle_qxfer_btrace) (handle_qxfer_btrace_conf, detach_or_kill_for_exit_cleanup) (captured_main, main): Update. * gdbreplay.c (main): Update.
2019-03-13Change pid_to_str to return std::stringTom Tromey1-56/+53
Currently the target pid_to_str method returns a const char *, so many implementations have a static buffer that they update. This patch changes these methods to return a std::string instead. I think this is cleaner and avoids possible gotchas when calling pid_to_str on different ptids in a single statement. (Though no such calls exist currently.) This also updates various helper functions, and the gdbarch pid_to_str methods. I also made a best effort to fix all the callers, but I can't build some of the *-nat.c files. Tested by the buildbot. gdb/ChangeLog 2019-03-13 Tom Tromey <tromey@adacore.com> * i386-gnu-nat.c (i386_gnu_nat_target::fetch_registers) (i386_gnu_nat_target::store_registers): Update. * target-debug.h (target_debug_print_std_string): New macro. * x86-linux-nat.c (x86_linux_nat_target::enable_btrace): Update. * windows-tdep.c (display_one_tib): Update. * tui/tui-stack.c (tui_make_status_line): Update. * top.c (print_inferior_quit_action): Update. * thread.c (thr_try_catch_cmd): Update. (add_thread_with_info): Update. (thread_target_id_str): Update. (thr_try_catch_cmd): Update. (thread_command): Update. (thread_find_command): Update. * record-btrace.c (record_btrace_target::info_record) (record_btrace_resume_thread, record_btrace_target::resume) (record_btrace_cancel_resume, record_btrace_step_thread) (record_btrace_target::wait, record_btrace_target::wait) (record_btrace_target::wait, record_btrace_target::stop): Update. * progspace.c (print_program_space): Update. * process-stratum-target.c (process_stratum_target::thread_address_space): Update. * linux-fork.c (linux_fork_mourn_inferior) (detach_checkpoint_command, info_checkpoints_command) (linux_fork_context): Update. (linux_fork_detach): Update. (class scoped_switch_fork_info): Update. (delete_checkpoint_command): Update. * infrun.c (follow_fork_inferior): Update. (follow_fork_inferior): Update. (proceed_after_vfork_done): Update. (handle_vfork_child_exec_or_exit): Update. (follow_exec): Update. (displaced_step_prepare_throw): Update. (displaced_step_restore): Update. (start_step_over): Update. (resume_1): Update. (clear_proceed_status_thread): Update. (proceed): Update. (print_target_wait_results): Update. (do_target_wait): Update. (context_switch): Update. (stop_all_threads): Update. (restart_threads): Update. (finish_step_over): Update. (handle_signal_stop): Update. (switch_back_to_stepped_thread): Update. (keep_going_pass_signal): Update. (print_exited_reason): Update. (normal_stop): Update. * inferior.c (inferior_pid_to_str): Change return type. (print_selected_inferior): Update. (add_inferior): Update. (detach_inferior): Update. * dummy-frame.c (fprint_dummy_frames): Update. * dcache.c (dcache_info_1): Update. * btrace.c (btrace_enable, btrace_disable, btrace_teardown) (btrace_fetch, btrace_clear): Update. * linux-tdep.c (linux_core_pid_to_str): Change return type. * i386-cygwin-tdep.c (i386_windows_core_pid_to_str): Change return type. * fbsd-tdep.c (fbsd_core_pid_to_str): Change return type. * sol2-tdep.h (sol2_core_pid_to_str): Change return type. * sol2-tdep.c (sol2_core_pid_to_str): Change return type. * gdbarch.c, gdbarch.h: Rebuild. * gdbarch.sh (core_pid_to_str): Change return type. * windows-nat.c (struct windows_nat_target) <pid_to_str>: Change return type. (windows_nat_target::pid_to_str): Change return type. (windows_delete_thread): Update. (windows_nat_target::attach): Update. (windows_nat_target::files_info): Update. * target-delegates.c: Rebuild. * sol-thread.c (class sol_thread_target) <pid_to_str>: Change return type. (sol_thread_target::pid_to_str): Change return type. * remote.c (class remote_target) <pid_to_str>: Change return type. (remote_target::pid_to_str): Change return type. (extended_remote_target::attach, remote_target::remote_stop_ns) (remote_target::remote_notif_remove_queued_reply) (remote_target::push_stop_reply, remote_target::disable_btrace): Update. (extended_remote_target::attach): Update. * remote-sim.c (struct gdbsim_target) <pid_to_str>: Change return type. (gdbsim_target::pid_to_str): Change return type. * ravenscar-thread.c (struct ravenscar_thread_target) <pid_to_str>: Change return type. (ravenscar_thread_target::pid_to_str): Change return type. * procfs.c (class procfs_target) <pid_to_str>: Change return type. (procfs_target::pid_to_str): Change return type. (procfs_target::attach): Update. (procfs_target::detach): Update. (procfs_target::fetch_registers): Update. (procfs_target::store_registers): Update. (procfs_target::wait): Update. (procfs_target::files_info): Update. * obsd-nat.c (obsd_nat_target::pid_to_str): Change return type. * nto-procfs.c (struct nto_procfs_target) <pid_to_str>: Change return type. (nto_procfs_target::pid_to_str): Change return type. (nto_procfs_target::files_info, nto_procfs_target::attach): Update. * linux-thread-db.c (class thread_db_target) <pid_to_str>: Change return type. * linux-nat.c (linux_nat_target::pid_to_str): Change return type. (exit_lwp): Update. (attach_proc_task_lwp_callback, get_detach_signal) (detach_one_lwp, resume_lwp, linux_nat_target::resume) (linux_nat_target::resume, wait_lwp, stop_callback) (maybe_clear_ignore_sigint, stop_wait_callback, status_callback) (save_stop_reason, select_event_lwp, linux_nat_filter_event) (linux_nat_wait_1, resume_stopped_resumed_lwps) (linux_nat_target::wait, linux_nat_stop_lwp): Update. * inf-ptrace.c (inf_ptrace_target::pid_to_str): Change return type. (inf_ptrace_target::attach): Update. (inf_ptrace_target::files_info): Update. * go32-nat.c (struct go32_nat_target) <pid_to_str>: Change return type. (go32_nat_target::pid_to_str): Change return type. * gnu-nat.c (gnu_nat_target::pid_to_str): Change return type. (gnu_nat_target::wait): Update. (gnu_nat_target::wait): Update. (gnu_nat_target::resume): Update. * fbsd-nat.c (fbsd_nat_target::pid_to_str): Change return type. (fbsd_nat_target::wait): Update. * darwin-nat.c (darwin_nat_target::pid_to_str): Change return type. (darwin_nat_target::attach): Update. * corelow.c (class core_target) <pid_to_str>: Change return type. (core_target::pid_to_str): Change return type. * target.c (normal_pid_to_str): Change return type. (default_pid_to_str): Likewise. (target_pid_to_str): Change return type. (target_translate_tls_address): Update. (target_announce_detach): Update. * bsd-uthread.c (struct bsd_uthread_target) <pid_to_str>: Change return type. (bsd_uthread_target::pid_to_str): Change return type. * bsd-kvm.c (class bsd_kvm_target) <pid_to_str>: Change return type. (bsd_kvm_target::pid_to_str): Change return type. * aix-thread.c (class aix_thread_target) <pid_to_str>: Change return type. (aix_thread_target::pid_to_str): Change return type. * target.h (struct target_ops) <pid_to_str>: Change return type. (target_pid_to_str, normal_pid_to_str): Likewise. * obsd-nat.h (class obsd_nat_target) <pid_to_str>: Change return type. * linux-nat.h (class linux_nat_target) <pid_to_str>: Change return type. * inf-ptrace.h (struct inf_ptrace_target) <pid_to_str>: Change return type. * gnu-nat.h (struct gnu_nat_target) <pid_to_str>: Change return type. * fbsd-nat.h (class fbsd_nat_target) <pid_to_str>: Change return type. * darwin-nat.h (class darwin_nat_target) <pid_to_str>: Change return type.
2019-03-12Change iterate_over_lwps to take a gdb::function_viewTom Tromey1-63/+75
This changes iterate_over_lwps to use a gdb::function_view. This was needed in order to make null_ptid and minus_one_ptid 'const'. gdb/ChangeLog 2019-03-12 Tom Tromey <tromey@adacore.com> * linux-nat.c (iterate_over_lwps): Update. (stop_callback): Remove parameter. (stop_wait_callback, detach_callback, resume_set_callback) (select_singlestep_lwp_callback, set_ignore_sigint) (status_callback, resumed_callback, resume_clear_callback) (kill_callback, kill_wait_callback, linux_nat_stop_lwp): Remove data parameter. (linux_nat_target::detach, linux_nat_target::resume) (linux_stop_and_wait_all_lwps, select_event_lwp) (linux_nat_filter_event, linux_nat_wait_1) (linux_nat_target::kill, linux_nat_target::stop) (linux_nat_target::stop): Update. (linux_nat_resume_callback): Change type. (resume_stopped_resumed_lwps, count_events_callback) (select_event_lwp_callback): Likewise. (linux_stop_lwp, linux_nat_stop_lwp): Update. * arm-linux-nat.c (struct update_registers_data): Remove. (update_registers_callback): Change type. (arm_linux_insert_hw_breakpoint1): Update. * nat/x86-linux-dregs.c (update_debug_registers_callback): Remove parameter. (x86_linux_dr_set_addr): Update. (x86_linux_dr_set_control): Update. * nat/linux-nat.h (iterate_over_lwps_ftype): Remove parameter. (iterate_over_lwps): Use gdb::function_view. * nat/aarch64-linux-hw-point.c (struct aarch64_dr_update_callback_param): Remove. (debug_reg_change_callback): Change type. (aarch64_notify_debug_reg_change): Update. * s390-linux-nat.c (s390_refresh_per_info): Update. gdb/gdbserver/ChangeLog 2019-03-12 Tom Tromey <tromey@adacore.com> * linux-low.c (iterate_over_lwps): Update.
2019-01-25Normalize includes to use common/Tom Tromey1-5/+5
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.