Commit Graph

858 Commits

Author SHA1 Message Date
Pedro Alves 5018ce90c1 Make target_ops::has_execution take an 'inferior *' instead of a ptid_t
With the multi-target work, each inferior will have its own target
stack, so to call a target method, we'll need to make sure that the
inferior in question is the current one, otherwise target->beneath()
calls will find the target beneath in the wrong inferior.

In some places, it's much more convenient to be able to check whether
an inferior has execution without having to switch to it in order to
call target_has_execution on the right inferior/target stack, to avoid
side effects with switching inferior/thread/program space.

The current target_ops::has_execution method takes a ptid_t as
parameter, which, in a multi-target world, isn't sufficient to
identify the target.  This patch prepares to address that, by changing
the parameter to an inferior pointer instead.  From the inferior,
we'll be able to query its target stack to tell which target is
beneath.

Also adds a new inferior::has_execution() method to make callers a bit
more natural to read.

gdb/ChangeLog:
2020-01-10  Pedro Alves  <palves@redhat.com>

	* corelow.c (core_target::has_execution): Change parameter type to
	inferior pointer.
	* inferior.c (number_of_live_inferiors): Use
	inferior::has_execution instead of target_has_execution_1.
	* inferior.h (inferior::has_execution): New.
	* linux-thread-db.c (thread_db_target::update_thread_list): Use
	inferior::has_execution instead of target_has_execution_1.
	* process-stratum-target.c
	(process_stratum_target::has_execution): Change parameter type to
	inferior pointer.  Check the inferior's PID instead of
	inferior_ptid.
	* process-stratum-target.h
	(process_stratum_target::has_execution): Change parameter type to
	inferior pointer.
	* record-full.c (record_full_core_target::has_execution): Change
	parameter type to inferior pointer.
	* target.c (target_has_execution_1): Change parameter type to
	inferior pointer.
	(target_has_execution_current): Adjust.
	* target.h (target_ops::has_execution): Change parameter type to
	inferior pointer.
	(target_has_execution_1): Change parameter type to inferior
	pointer.  Change return type to bool.
	* tracefile.h (tracefile_target::has_execution): Change parameter
	type to inferior pointer.
2020-01-10 20:05:44 +00:00
Joel Brobecker b811d2c292 Update copyright year range in all GDB files.
gdb/ChangeLog:

        Update copyright year range in all GDB files.
2020-01-01 10:20:53 +04:00
Sergio Durigan Junior 494409bb8a Fix crash with core + TUI + run
Ref.: https://bugzilla.redhat.com/show_bug.cgi?id=1765117

A segfault can happen in a specific scenario when using TUI + a
corefile, as explained in the bug mentioned above.  The problem
happens when opening a corefile on GDB:

  $ gdb ./core program

entering TUI (C-x a), and then issuing a "run" command.  GDB segfaults
with the following stack trace:

  (top-gdb) bt
  #0  0x00000000004cd5da in target_ops::shortname (this=0x0) at ../../binutils-gdb/gdb/target.h:449
  #1  0x0000000000ac08fb in target_shortname () at ../../binutils-gdb/gdb/target.h:1323
  #2  0x0000000000ac09ae in tui_locator_window::make_status_line[abi:cxx11]() const (this=0x23e1fa0 <_locator>) at ../../binutils-gdb/gdb/tui/tui-stack.c:86
  #3  0x0000000000ac1043 in tui_locator_window::rerender (this=0x23e1fa0 <_locator>) at ../../binutils-gdb/gdb/tui/tui-stack.c:231
  #4  0x0000000000ac1632 in tui_show_locator_content () at ../../binutils-gdb/gdb/tui/tui-stack.c:369
  #5  0x0000000000ac63b6 in tui_set_key_mode (mode=TUI_COMMAND_MODE) at ../../binutils-gdb/gdb/tui/tui.c:321
  #6  0x0000000000aaf9be in tui_inferior_exit (inf=0x2d446a0) at ../../binutils-gdb/gdb/tui/tui-hooks.c:181
  #7  0x000000000044cddf in std::_Function_handler<void (inferior*), void (*)(inferior*)>::_M_invoke(std::_Any_data const&, inferior*&&) (__functor=..., __args#0=@0x7fffffffd650: 0x2d446a0)
      at /usr/include/c++/9/bits/std_function.h:300
  #8  0x0000000000757db9 in std::function<void (inferior*)>::operator()(inferior*) const (this=0x2cf3168, __args#0=0x2d446a0) at /usr/include/c++/9/bits/std_function.h:690
  #9  0x0000000000757876 in gdb::observers::observable<inferior*>::notify (this=0x23de0c0 <gdb::observers::inferior_exit>, args#0=0x2d446a0)
      at ../../binutils-gdb/gdb/gdbsupport/observable.h:106
  #10 0x000000000075532d in exit_inferior_1 (inftoex=0x2d446a0, silent=1) at ../../binutils-gdb/gdb/inferior.c:191
  #11 0x0000000000755460 in exit_inferior_silent (inf=0x2d446a0) at ../../binutils-gdb/gdb/inferior.c:234
  #12 0x000000000059f47c in core_target::close (this=0x2d68590) at ../../binutils-gdb/gdb/corelow.c:265
  #13 0x0000000000a7688c in target_close (targ=0x2d68590) at ../../binutils-gdb/gdb/target.c:3293
  #14 0x0000000000a63d74 in target_stack::push (this=0x23e1800 <g_target_stack>, t=0x23c38c8 <the_amd64_linux_nat_target>) at ../../binutils-gdb/gdb/target.c:568
  #15 0x0000000000a63dbf in push_target (t=0x23c38c8 <the_amd64_linux_nat_target>) at ../../binutils-gdb/gdb/target.c:583
  #16 0x0000000000748088 in inf_ptrace_target::create_inferior (this=0x23c38c8 <the_amd64_linux_nat_target>, exec_file=0x2d58d30 "/usr/bin/cat", allargs="", env=0x25f12b0, from_tty=1)
      at ../../binutils-gdb/gdb/inf-ptrace.c:128
  #17 0x0000000000795ccb in linux_nat_target::create_inferior (this=0x23c38c8 <the_amd64_linux_nat_target>, exec_file=0x2d58d30 "/usr/bin/cat", allargs="", env=0x25f12b0, from_tty=1)
      at ../../binutils-gdb/gdb/linux-nat.c:1094
  #18 0x000000000074eae9 in run_command_1 (args=0x0, from_tty=1, run_how=RUN_NORMAL) at ../../binutils-gdb/gdb/infcmd.c:639
  ...

The problem happens because 'tui_locator_window::make_status_line'
needs the value of 'target_shortname' in order to update the status
line.  'target_shortname' is a macro which expands to:

  #define	target_shortname	(current_top_target ()->shortname ())

and, in our scenario, 'current_top_target ()' returns NULL, which
obviously causes a segfault.  But why does it return NULL, since,
according to its comment on target.h, it should never do that?

What is happening is that we're being caught in the middle of a
"target switch".  We had the 'core_target' on top, because we were
inspecting a corefile, but when the user decided to invoke "run" GDB
had to actually create the inferior, which ends up detecting that we
have a target already, and tries to close it (from target.c):

  /* See target.h.  */

  void
  target_stack::push (target_ops *t)
  {
    /* If there's already a target at this stratum, remove it.  */
    strata stratum = t->stratum ();

    if (m_stack[stratum] != NULL)
      {
	target_ops *prev = m_stack[stratum];
	m_stack[stratum] = NULL;
	target_close (prev); // <-- here
      }
  ...

When the current target ('core_target') is being closed, it checks for
possible observers registered with it and calls them.  TUI is one of
those observers, it gets called, tries to update the status line, and
GDB crashes.

The real problem is that we are clearing 'm_stack[stratum]', but
forgetting to adjust 'm_top'.  Interestingly, this scenario is covered
in 'target_stack::unpush', but Pedro said he forgot to call it here..
The fix, therefore, is to call '::unpush' if there's a target on the
stack.

This patch has been tested on the Buildbot and no regressions have
been found.  I'm also submitting a testcase for it.

gdb/ChangeLog:
2019-11-18  Sergio Durigan Junior  <sergiodj@redhat.com>
	    Pedro Alves  <palves@redhat.com>

	https://bugzilla.redhat.com/show_bug.cgi?id=1765117
	* target.c (target_stack::push): Call 'unpush' if there's a
	target on top of the stack.

gdb/testsuite/ChangeLog:
2019-11-18  Sergio Durigan Junior  <sergiodj@redhat.com>

	https://bugzilla.redhat.com/show_bug.cgi?id=1765117
	* gdb.tui/corefile-run.exp: New file.

Change-Id: I39e2f8b538c580c8ea5bf1d657ee877e47746c8f
2019-11-18 19:13:43 -05:00
Tom de Vries 30baf67b65 [gdb] Fix more typos in comments (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
2019-10-26 09:55:32 +02:00
Alan Modra fd3619828e bfd_section_* macros
This large patch removes the unnecessary bfd parameter from various
bfd section macros and functions.  The bfd is hardly ever used and if
needed for the bfd_set_section_* or bfd_rename_section functions can
be found via section->owner except for the com, und, abs, and ind
std_section special sections.  Those sections shouldn't be modified
anyway.

The patch also removes various bfd_get_section_<field> macros,
replacing their use with bfd_section_<field>, and adds
bfd_set_section_lma.  I've also fixed a minor bug in gas where
compressed section renaming was done directly rather than calling
bfd_rename_section.  This would have broken bfd_get_section_by_name
and similar functions, but that hardly mattered at such a late stage
in gas processing.

bfd/
	* bfd-in.h (bfd_get_section_name, bfd_get_section_vma),
	(bfd_get_section_lma, bfd_get_section_alignment),
	(bfd_get_section_size, bfd_get_section_flags),
	(bfd_get_section_userdata): Delete.
	(bfd_section_name, bfd_section_size, bfd_section_vma),
	(bfd_section_lma, bfd_section_alignment): Lose bfd parameter.
	(bfd_section_flags, bfd_section_userdata): New.
	(bfd_is_com_section): Rename parameter.
	* section.c (bfd_set_section_userdata, bfd_set_section_vma),
	(bfd_set_section_alignment, bfd_set_section_flags, bfd_rename_section),
	(bfd_set_section_size): Delete bfd parameter, rename section parameter.
	(bfd_set_section_lma): New.
	* bfd-in2.h: Regenerate.
	* mach-o.c (bfd_mach_o_init_section_from_mach_o): Delete bfd param,
	update callers.
	* aoutx.h, * bfd.c, * coff-alpha.c, * coff-arm.c, * coff-mips.c,
	* coff64-rs6000.c, * coffcode.h, * coffgen.c, * cofflink.c,
	* compress.c, * ecoff.c, * elf-eh-frame.c, * elf-hppa.h,
	* elf-ifunc.c, * elf-m10200.c, * elf-m10300.c, * elf-properties.c,
	* elf-s390-common.c, * elf-vxworks.c, * elf.c, * elf32-arc.c,
	* elf32-arm.c, * elf32-avr.c, * elf32-bfin.c, * elf32-cr16.c,
	* elf32-cr16c.c, * elf32-cris.c, * elf32-crx.c, * elf32-csky.c,
	* elf32-d10v.c, * elf32-epiphany.c, * elf32-fr30.c, * elf32-frv.c,
	* elf32-ft32.c, * elf32-h8300.c, * elf32-hppa.c, * elf32-i386.c,
	* elf32-ip2k.c, * elf32-iq2000.c, * elf32-lm32.c, * elf32-m32c.c,
	* elf32-m32r.c, * elf32-m68hc1x.c, * elf32-m68k.c, * elf32-mcore.c,
	* elf32-mep.c, * elf32-metag.c, * elf32-microblaze.c,
	* elf32-moxie.c, * elf32-msp430.c, * elf32-mt.c, * elf32-nds32.c,
	* elf32-nios2.c, * elf32-or1k.c, * elf32-ppc.c, * elf32-pru.c,
	* elf32-rl78.c, * elf32-rx.c, * elf32-s390.c, * elf32-score.c,
	* elf32-score7.c, * elf32-sh.c, * elf32-spu.c, * elf32-tic6x.c,
	* elf32-tilepro.c, * elf32-v850.c, * elf32-vax.c, * elf32-visium.c,
	* elf32-xstormy16.c, * elf32-xtensa.c, * elf64-alpha.c,
	* elf64-bpf.c, * elf64-hppa.c, * elf64-ia64-vms.c, * elf64-mmix.c,
	* elf64-ppc.c, * elf64-s390.c, * elf64-sparc.c, * elf64-x86-64.c,
	* elflink.c, * elfnn-aarch64.c, * elfnn-ia64.c, * elfnn-riscv.c,
	* elfxx-aarch64.c, * elfxx-mips.c, * elfxx-sparc.c,
	* elfxx-tilegx.c, * elfxx-x86.c, * i386msdos.c, * linker.c,
	* mach-o.c, * mmo.c, * opncls.c, * pdp11.c, * pei-x86_64.c,
	* peicode.h, * reloc.c, * section.c, * syms.c, * vms-alpha.c,
	* xcofflink.c: Update throughout for bfd section macro and function
	changes.
binutils/
	* addr2line.c, * bucomm.c, * coffgrok.c, * dlltool.c, * nm.c,
	* objcopy.c, * objdump.c, * od-elf32_avr.c, * od-macho.c,
	* od-xcoff.c, * prdbg.c, * rdcoff.c, * rddbg.c, * rescoff.c,
	* resres.c, * size.c, * srconv.c, * strings.c, * windmc.c: Update
	throughout for bfd section macro and function changes.
gas/
	* as.c, * as.h, * dw2gencfi.c, * dwarf2dbg.c, * ecoff.c,
	* read.c, * stabs.c, * subsegs.c, * subsegs.h, * write.c,
	* config/obj-coff-seh.c, * config/obj-coff.c, * config/obj-ecoff.c,
	* config/obj-elf.c, * config/obj-macho.c, * config/obj-som.c,
	* config/tc-aarch64.c, * config/tc-alpha.c, * config/tc-arc.c,
	* config/tc-arm.c, * config/tc-avr.c, * config/tc-bfin.c,
	* config/tc-bpf.c, * config/tc-d10v.c, * config/tc-d30v.c,
	* config/tc-epiphany.c, * config/tc-fr30.c, * config/tc-frv.c,
	* config/tc-h8300.c, * config/tc-hppa.c, * config/tc-i386.c,
	* config/tc-ia64.c, * config/tc-ip2k.c, * config/tc-iq2000.c,
	* config/tc-lm32.c, * config/tc-m32c.c, * config/tc-m32r.c,
	* config/tc-m68hc11.c, * config/tc-mep.c, * config/tc-microblaze.c,
	* config/tc-mips.c, * config/tc-mmix.c, * config/tc-mn10200.c,
	* config/tc-mn10300.c, * config/tc-msp430.c, * config/tc-mt.c,
	* config/tc-nds32.c, * config/tc-or1k.c, * config/tc-ppc.c,
	* config/tc-pru.c, * config/tc-rl78.c, * config/tc-rx.c,
	* config/tc-s12z.c, * config/tc-s390.c, * config/tc-score.c,
	* config/tc-score7.c, * config/tc-sh.c, * config/tc-sparc.c,
	* config/tc-spu.c, * config/tc-tic4x.c, * config/tc-tic54x.c,
	* config/tc-tic6x.c, * config/tc-tilegx.c, * config/tc-tilepro.c,
	* config/tc-v850.c, * config/tc-visium.c, * config/tc-wasm32.c,
	* config/tc-xc16x.c, * config/tc-xgate.c, * config/tc-xstormy16.c,
	* config/tc-xtensa.c, * config/tc-z8k.c: Update throughout for
	bfd section macro and function changes.
	* write.c (compress_debug): Use bfd_rename_section.
gdb/
	* aarch64-linux-tdep.c, * arm-tdep.c, * auto-load.c,
	* coff-pe-read.c, * coffread.c, * corelow.c, * dbxread.c,
	* dicos-tdep.c, * dwarf2-frame.c, * dwarf2read.c, * elfread.c,
	* exec.c, * fbsd-tdep.c, * gcore.c, * gdb_bfd.c, * gdb_bfd.h,
	* hppa-tdep.c, * i386-cygwin-tdep.c, * i386-fbsd-tdep.c,
	* i386-linux-tdep.c, * jit.c, * linux-tdep.c, * machoread.c,
	* maint.c, * mdebugread.c, * minidebug.c, * mips-linux-tdep.c,
	* mips-sde-tdep.c, * mips-tdep.c, * mipsread.c, * nto-tdep.c,
	* objfiles.c, * objfiles.h, * osabi.c, * ppc-linux-tdep.c,
	* ppc64-tdep.c, * record-btrace.c, * record-full.c, * remote.c,
	* rs6000-aix-tdep.c, * rs6000-tdep.c, * s390-linux-tdep.c,
	* s390-tdep.c, * solib-aix.c, * solib-dsbt.c, * solib-frv.c,
	* solib-spu.c, * solib-svr4.c, * solib-target.c,
	* spu-linux-nat.c, * spu-tdep.c, * symfile-mem.c, * symfile.c,
	* symmisc.c, * symtab.c, * target.c, * windows-nat.c,
	* xcoffread.c, * cli/cli-dump.c, * compile/compile-object-load.c,
	* mi/mi-interp.c: Update throughout for bfd section macro and
	function changes.
	* gcore (gcore_create_callback): Use bfd_set_section_lma.
	* spu-tdep.c (spu_overlay_new_objfile): Likewise.
gprof/
	* corefile.c, * symtab.c: Update throughout for bfd section
	macro and function changes.
ld/
	* ldcref.c, * ldctor.c, * ldelf.c, * ldlang.c, * pe-dll.c,
	* emultempl/aarch64elf.em, * emultempl/aix.em,
	* emultempl/armcoff.em, * emultempl/armelf.em,
	* emultempl/cr16elf.em, * emultempl/cskyelf.em,
	* emultempl/m68hc1xelf.em, * emultempl/m68kelf.em,
	* emultempl/mipself.em, * emultempl/mmix-elfnmmo.em,
	* emultempl/mmo.em, * emultempl/msp430.em,
	* emultempl/nios2elf.em, * emultempl/pe.em, * emultempl/pep.em,
	* emultempl/ppc64elf.em, * emultempl/xtensaelf.em: Update
	throughout for bfd section macro and function changes.
libctf/
	* ctf-open-bfd.c: Update throughout for bfd section macro changes.
opcodes/
	* arc-ext.c: Update throughout for bfd section macro changes.
sim/
	* common/sim-load.c, * common/sim-utils.c, * cris/sim-if.c,
	* erc32/func.c, * lm32/sim-if.c, * m32c/load.c, * m32c/trace.c,
	* m68hc11/interp.c, * ppc/hw_htab.c, * ppc/hw_init.c,
	* rl78/load.c, * rl78/trace.c, * rx/gdb-if.c, * rx/load.c,
	* rx/trace.c: Update throughout for bfd section macro changes.
2019-09-19 09:40:13 +09:30
Christian Biesinger 491144b5e2 Change boolean options to bool instead of int
This is for add_setshow_boolean_cmd as well as the gdb::option interface.

gdb/ChangeLog:

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

	* ada-lang.c (ada_ignore_descriptive_types_p): Change to bool.
	(print_signatures): Likewise.
	(trust_pad_over_xvs): Likewise.
	* arch/aarch64-insn.c (aarch64_debug): Likewise.
	* arch/aarch64-insn.h (aarch64_debug): Likewise.
	* arm-linux-nat.c (arm_apcs_32): Likewise.
	* arm-linux-tdep.c (arm_apcs_32): Likewise.
	* arm-nbsd-nat.c (arm_apcs_32): Likewise.
	* arm-tdep.c (arm_debug): Likewise.
	(arm_apcs_32): Likewise.
	* auto-load.c (debug_auto_load): Likewise.
	(auto_load_gdb_scripts): Likewise.
	(global_auto_load): Likewise.
	(auto_load_local_gdbinit): Likewise.
	(auto_load_local_gdbinit_loaded): Likewise.
	* auto-load.h (global_auto_load): Likewise.
	(auto_load_local_gdbinit): Likewise.
	(auto_load_local_gdbinit_loaded): Likewise.
	* breakpoint.c (disconnected_dprintf): Likewise.
	(breakpoint_proceeded): Likewise.
	(automatic_hardware_breakpoints): Likewise.
	(always_inserted_mode): Likewise.
	(target_exact_watchpoints): Likewise.
	(_initialize_breakpoint): Update.
	* breakpoint.h (target_exact_watchpoints): Change to bool.
	* btrace.c (maint_btrace_pt_skip_pad): Likewise.
	* cli/cli-cmds.c (trace_commands): Likewise.
	* cli/cli-cmds.h (trace_commands): Likewise.
	* cli/cli-decode.c (add_setshow_boolean_cmd): Change int* argument
	to bool*.
	* cli/cli-logging.c (logging_overwrite): Change to bool.
	(logging_redirect): Likewise.
	(debug_redirect): Likewise.
	* cli/cli-option.h (option_def) <boolean>: Change return type to bool*.
	(struct boolean_option_def) <get_var_address_cb_>: Change return type
	to bool.
	<boolean_option_def>: Update.
	(struct flag_option_def): Change default type of Context to bool
	from int.
	<flag_option_def>: Change return type of var_address_cb_ to bool*.
	* cli/cli-setshow.c (do_set_command): Cast to bool* instead of int*.
	(get_setshow_command_value_string): Likewise.
	* cli/cli-style.c (cli_styling): Change to bool.
	(source_styling): Likewise.
	* cli/cli-style.h (source_styling): Likewise.
	(cli_styling): Likewise.
	* cli/cli-utils.h (struct qcs_flags) <quiet, cont, silent>: Change
	to bool.
	* command.h (var_types): Update comment.
	(add_setshow_boolean_cmd): Change int* var argument to bool*.
	* compile/compile-cplus-types.c (debug_compile_cplus_types): Change to
	bool.
	(debug_compile_cplus_scopes): Likewise.
	* compile/compile-internal.h (compile_debug): Likewise.
	* compile/compile.c (compile_debug): Likewise.
	(struct compile_options) <raw>: Likewise.
	* cp-support.c (catch_demangler_crashes): Likewise.
	* cris-tdep.c (usr_cmd_cris_version_valid): Likewise.
	(usr_cmd_cris_dwarf2_cfi): Likewise.
	* csky-tdep.c (csky_debug): Likewise.
	* darwin-nat.c (enable_mach_exceptions): Likewise.
	* dcache.c (dcache_enabled_p): Likewise.
	* defs.h (info_verbose): Likewise.
	* demangle.c (demangle): Likewise.
	(asm_demangle): Likewise.
	* dwarf-index-cache.c (debug_index_cache): Likewise.
	* dwarf2-frame.c (dwarf2_frame_unwinders_enabled_p): Likewise.
	* dwarf2-frame.h (dwarf2_frame_unwinders_enabled_p): Likewise.
	* dwarf2read.c (check_physname): Likewise.
	(use_deprecated_index_sections): Likewise.
	(dwarf_always_disassemble): Likewise.
	* eval.c (overload_resolution): Likewise.
	* event-top.c (set_editing_cmd_var): Likewise.
	(exec_done_display_p): Likewise.
	* event-top.h (set_editing_cmd_var): Likewise.
	(exec_done_display_p): Likewise.
	* exec.c (write_files): Likewise.
	* fbsd-nat.c (debug_fbsd_lwp): Likewise
	(debug_fbsd_nat): Likewise.
	* frame.h (struct frame_print_options) <print_raw_frame_arguments>:
	Likewise.
	(struct set_backtrace_options) <backtrace_past_main>: Likewise.
	<backtrace_past_entry> Likewise.
	* gdb-demangle.h (demangle): Likewise.
	(asm_demangle): Likewise.
	* gdb_bfd.c (bfd_sharing): Likewise.
	* gdbcore.h (write_files): Likewise.
	* gdbsupport/common-debug.c (show_debug_regs): Likewise.
	* gdbsupport/common-debug.h (show_debug_regs): Likewise.
	* gdbthread.h (print_thread_events): Likewise.
	* gdbtypes.c (opaque_type_resolution): Likewise.
	(strict_type_checking): Likewise.
	* gnu-nat.c (gnu_debug_flag): Likewise.
	* guile/scm-auto-load.c (auto_load_guile_scripts): Likewise.
	* guile/scm-param.c (pascm_variable): Add boolval.
	(add_setshow_generic): Update.
	(pascm_param_value): Update.
	(pascm_set_param_value_x): Update.
	* hppa-tdep.c (hppa_debug): Change to bool..
	* infcall.c (may_call_functions_p): Likewise.
	(coerce_float_to_double_p): Likewise.
	(unwind_on_signal_p): Likewise.
	(unwind_on_terminating_exception_p): Likewise.
	* infcmd.c (startup_with_shell): Likewise.
	* inferior.c (print_inferior_events): Likewise.
	* inferior.h (startup_with_shell): Likewise.
	(print_inferior_events): Likewise.
	* infrun.c (step_stop_if_no_debug): Likewise.
	(detach_fork): Likewise.
	(debug_displaced): Likewise.
	(disable_randomization): Likewise.
	(non_stop): Likewise.
	(non_stop_1): Likewise.
	(observer_mode): Likewise.
	(observer_mode_1): Likewise.
	(set_observer_mode): Update.
	(sched_multi): Change to bool.
	* infrun.h (debug_displaced): Likewise.
	(sched_multi): Likewise.
	(step_stop_if_no_debug): Likewise.
	(non_stop): Likewise.
	(disable_randomization): Likewise.
	* linux-tdep.c (use_coredump_filter): Likewise.
	(dump_excluded_mappings): Likewise.
	* linux-thread-db.c (auto_load_thread_db): Likewise.
	(check_thread_db_on_load): Likewise.
	* main.c (captured_main_1): Update.
	* maint-test-options.c (struct test_options_opts) <flag_opt, xx1_opt,
	xx2_opt, boolean_opt>: Change to bool.
	* maint-test-settings.c (maintenance_test_settings_boolean): Likewise.
	* maint.c (maintenance_profile_p): Likewise.
	(per_command_time): Likewise.
	(per_command_space): Likewise.
	(per_command_symtab): Likewise.
	* memattr.c (inaccessible_by_default): Likewise.
	* mi/mi-main.c (mi_async): Likewise.
	(mi_async_1): Likewise.
	* mips-tdep.c (mips64_transfers_32bit_regs_p): Likewise.
	* nat/fork-inferior.h (startup_with_shell): Likewise.
	* nat/linux-namespaces.c (debug_linux_namespaces): Likewise.
	* nat/linux-namespaces.h (debug_linux_namespaces): Likewise.
	* nios2-tdep.c (nios2_debug): Likewise.
	* or1k-tdep.c (or1k_debug): Likewise.
	* parse.c (parser_debug): Likewise.
	* parser-defs.h (parser_debug): Likewise.
	* printcmd.c (print_symbol_filename): Likewise.
	* proc-api.c (procfs_trace): Likewise.
	* python/py-auto-load.c (auto_load_python_scripts): Likewise.
	* python/py-param.c (union parmpy_variable): Add "bool boolval" field.
	(set_parameter_value): Update.
	(add_setshow_generic): Update.
	* python/py-value.c (copy_py_bool_obj): Change argument from int*
	to bool*.
	* python/python.c (gdbpy_parameter_value): Cast to bool* instead of
	int*.
	* ravenscar-thread.c (ravenscar_task_support): Change to bool.
	* record-btrace.c (record_btrace_target::store_registers): Update.
	* record-full.c (record_full_memory_query): Change to bool.
	(record_full_stop_at_limit): Likewise.
	* record-full.h (record_full_memory_query): Likewise.
	* remote-notif.c (notif_debug): Likewise.
	* remote-notif.h (notif_debug): Likewise.
	* remote.c (use_range_stepping): Likewise.
	(interrupt_on_connect): Likewise.
	(remote_break): Likewise.
	* ser-tcp.c (tcp_auto_retry): Likewise.
	* ser-unix.c (serial_hwflow): Likewise.
	* skip.c (debug_skip): Likewise.
	* solib-aix.c (solib_aix_debug): Likewise.
	* spu-tdep.c (spu_stop_on_load_p): Likewise.
	(spu_auto_flush_cache_p): Likewise.
	* stack.c (struct backtrace_cmd_options) <full, no_filters, hide>:
	Likewise.
	(struct info_print_options) <quiet>: Likewise.
	* symfile-debug.c (debug_symfile): Likewise.
	* symfile.c (auto_solib_add): Likewise.
	(separate_debug_file_debug): Likewise.
	* symfile.h (auto_solib_add): Likewise.
	(separate_debug_file_debug): Likewise.
	* symtab.c (basenames_may_differ): Likewise.
	(struct filename_partial_match_opts) <dirname, basename>: Likewise.
	(struct info_print_options) <quiet, exclude_minsyms>: Likewise.
	(struct info_types_options) <quiet>: Likewise.
	* symtab.h (demangle): Likewise.
	(basenames_may_differ): Likewise.
	* target-dcache.c (stack_cache_enabled_1): Likewise.
	(code_cache_enabled_1): Likewise.
	* target.c (trust_readonly): Likewise.
	(may_write_registers): Likewise.
	(may_write_memory): Likewise.
	(may_insert_breakpoints): Likewise.
	(may_insert_tracepoints): Likewise.
	(may_insert_fast_tracepoints): Likewise.
	(may_stop): Likewise.
	(auto_connect_native_target): Likewise.
	(target_stop_and_wait): Update.
	(target_async_permitted): Change to bool.
	(target_async_permitted_1): Likewise.
	(may_write_registers_1): Likewise.
	(may_write_memory_1): Likewise.
	(may_insert_breakpoints_1): Likewise.
	(may_insert_tracepoints_1): Likewise.
	(may_insert_fast_tracepoints_1): Likewise.
	(may_stop_1): Likewise.
	* target.h (target_async_permitted): Likewise.
	(may_write_registers): Likewise.
	(may_write_memory): Likewise.
	(may_insert_breakpoints): Likewise.
	(may_insert_tracepoints): Likewise.
	(may_insert_fast_tracepoints): Likewise.
	(may_stop): Likewise.
	* thread.c (struct info_threads_opts) <show_global_ids>: Likewise.
	(make_thread_apply_all_options_def_group): Change argument from int*
	to bool*.
	(thread_apply_all_command): Update.
	(print_thread_events): Change to bool.
	* top.c (confirm): Likewise.
	(command_editing_p): Likewise.
	(history_expansion_p): Likewise.
	(write_history_p): Likewise.
	(info_verbose): Likewise.
	* top.h (confirm): Likewise.
	(history_expansion_p): Likewise.
	* tracepoint.c (disconnected_tracing): Likewise.
	(circular_trace_buffer): Likewise.
	* typeprint.c (print_methods): Likewise.
	(print_typedefs): Likewise.
	* utils.c (debug_timestamp): Likewise.
	(sevenbit_strings): Likewise.
	(pagination_enabled): Likewise.
	* utils.h (sevenbit_strings): Likewise.
	(pagination_enabled): Likewise.
	* valops.c (overload_resolution): Likewise.
	* valprint.h (struct value_print_options) <prettyformat_arrays,
	prettyformat_structs, vtblprint, unionprint, addressprint, objectprint,
	stop_print_at_null, print_array_indexes, deref_ref, static_field_print,
	pascal_static_field_print, raw, summary, symbol_print, finish_print>:
	Likewise.
	* windows-nat.c (new_console): Likewise.
	(cygwin_exceptions): Likewise.
	(new_group): Likewise.
	(debug_exec): Likewise.
	(debug_events): Likewise.
	(debug_memory): Likewise.
	(debug_exceptions): Likewise.
	(useshell): Likewise.
	* windows-tdep.c (maint_display_all_tib): Likewise.
	* xml-support.c (debug_xml): Likewise.
2019-09-18 09:35:12 +09:00
Tom Tromey 33eca68072 Use field_string in more places
This replaces uses of field_fmt with a "%s" format string to use
field_string instead.  Also, one use of "%9lx" is replaced with a call
to phex_nz; the '9' is dropped as it is implicit in the field width.

2019-07-15  Tom Tromey  <tromey@adacore.com>

	* mi/mi-main.c (list_available_thread_groups): Use field_string.
	* mi/mi-interp.c (mi_memory_changed): Use field_string.
	* target.c (flash_erase_command): Use field_string.
	* infrun.c (print_signal_received_reason): Use field_string.
	* i386-tdep.c (i386_mpx_print_bounds): Use field_string.
	* breakpoint.c (maybe_print_thread_hit_breakpoint): Use
	field_string.
	* ada-tasks.c (print_ada_task_info): Use field_string.
2019-07-15 09:31:18 -06:00
Tom Tromey ca8d69beb1 Use field_core_addr in more places
This changes a few spots that use field_fmt to use field_core_addr
instead.

gdb/ChangeLog
2019-07-15  Tom Tromey  <tromey@adacore.com>

	* target.c (flash_erase_command): Use field_core_addr.
	* symfile.c (generic_load): Use field_core_addr.
	* sparc64-linux-tdep.c (sparc64_linux_handle_segmentation_fault):
	Use field_core_addr.
	* i386-linux-tdep.c (i386_linux_handle_segmentation_fault): Use
	field_core_addr.
2019-07-15 09:28:59 -06:00
Tom Tromey 268a13a5a3 Rename common to gdbsupport
This is the next patch in the ongoing series to move gdbsever to the
top level.

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

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

Tested by the buildbot.

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

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

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

	* configure: Rebuild.
	* configure.ac: Change common to gdbsupport.
	* acinclude.m4: Change common to gdbsupport.
	* Makefile.in (SFILES, OBS, GDBREPLAY_OBS, IPA_OBJS)
	(version-generated.c, gdbsupport/%-ipa.o, gdbsupport/%.o): Change
	common to gdbsupport.
	* ax.c, event-loop.c, fork-child.c, gdb_proc_service.h,
	gdbreplay.c, gdbthread.h, hostio-errno.c, hostio.c, i387-fp.c,
	inferiors.c, inferiors.h, linux-aarch64-tdesc-selftest.c,
	linux-amd64-ipa.c, linux-i386-ipa.c, linux-low.c,
	linux-tic6x-low.c, linux-x86-low.c, linux-x86-tdesc-selftest.c,
	linux-x86-tdesc.c, lynx-i386-low.c, lynx-low.c, mem-break.h,
	nto-x86-low.c, regcache.c, regcache.h, remote-utils.c, server.c,
	server.h, spu-low.c, symbol.c, target.h, tdesc.c, tdesc.h,
	thread-db.c, tracepoint.c, win32-i386-low.c, win32-low.c: Change
	common to gdbsupport.
2019-07-09 07:45:38 -06:00
Pedro Alves b02f78f928 Introduce and use make_unique_xstrdup
Adds an utility function to make it shorter to write the common case
of wrapping an xstrdup with a unique_xmalloc_ptr, and uses it
throughout.

Note: I tried to put this in common/common-utils.h near skip_spaces,
etc. but that is included in common/common-defs.h before
common/gdb_unique_ptr.h is included, so it would fail to compile
because gdb::unique_xmalloc_ptr isn't defined at that point yet.  I
tried moving the gdb_unique_ptr.h inclusion before common-utils.h, but
that doesn't work because gdb_unique_ptr.h depends on common-utils.h
for xfree.

gdb/ChangeLog:
2019-06-04  Pedro Alves  <palves@redhat.com>

	* common/gdb_unique_ptr.h (make_unique_xstrdup): New.

	* ada-lang.c (catch_ada_completer): Use make_unique_xstrdup.
	* breakpoint.c (condition_completer): Likewise.
	* cli/cli-dump.c (scan_expression): Likewise.
	* common/filestuff.c (mkdir_recursive): Likewise.
	* common/gdb_tilde_expand.c (gdb_tilde_expand_up)
	* common/pathstuff.c (gdb_realpath, gdb_realpath_keepfile)
	(gdb_abspath): Likewise.
	* compile/compile-cplus-types.c
	(compile_cplus_instance::decl_name): Likewise.
	* completer.c (complete_explicit_location):
	(signal_completer, reg_or_group_completer_1): Likewise.
	* cp-support.c (cp_remove_params_if_any): Likewise.
	* fbsd-tdep.c (fbsd_core_vnode_path): Likewise.
	* guile/scm-safe-call.c (gdbscm_safe_eval_string): Likewise.
	* infcmd.c (strip_bg_char): Likewise.
	* linespec.c (copy_token_string): Likewise.
	* mi/mi-main.c (output_cores): Likewise.
	* psymtab.c (psymtab_search_name):
	* symfile.c (test_set_ext_lang_command): Likewise.
	* target.c (target_fileio_read_stralloc): Likewise.
	* tui/tui-regs.c (tui_reggroup_completer): Likewise.
	* value.c (complete_internalvar): Likewise.

gdb/gdbserver/ChangeLog:
2019-06-04  Pedro Alves  <palves@redhat.com>

	* server.c (captured_main): Use make_unique_xstrdup.
2019-06-04 22:48:32 +01:00
Tom Tromey 4ca51187d2 Constify target_ops::follow_exec
I noticed that target_ops::follow_exec took a "char *" parameter,
where "const char *" would be more correct.  This patch changes this
(and related functions) to be constified.

Tested by rebuilding.

gdb/ChangeLog
2019-05-22  Tom Tromey  <tromey@adacore.com>

	* target.c (target_follow_exec): Constify parameter.
	* target-delegates.c: Rebuild.
	* remote.c (remote_target::follow_exec): Constify parameter.
	* infrun.c (follow_exec): Constify parameter.
	* target.h (struct target_ops) <follow_exec>: Constify parameter.
	(target_follow_exec): Likewise.
2019-05-22 15:41:28 -04:00
Kevin Buettner 3d6c62048d Introduce target_ops method thread_info_to_thread_handle
This patch adds a thread_info_to_thread_handle method to the target_ops
struct.  It also implements this functionality for remote targets and
linux native threads.

gdb/ChangeLog:

	* gdbthread.h (thread_to_thread_handle): Declare.
	* thread.c (gdbtypes.h): Include.
	(thread_to_thread_handle): New function.

	* target.h (struct target_ops): Add thread_info_to_thread_handle.
	(target_thread_info_to_thread_handle): Declare.
	* target.c (target_thread_info_to_thread_handle): New function.
	* target-debug.h (target_debug_print_gdb_byte_vector): Define.
	* target-delegates.c: Regenerate.

	* linux-thread-db.c (class thread_db_target): Add method
	thread_info_to_thread_handle.
	(thread_db_target::thread_info_to_thread_handle): Define.
	* remote.c (class remote_target): Add new method
	thread_info_to_thread_handle.
	(remote_target::thread_info_to_thread_handle): Define.
2019-04-08 20:09:37 -07:00
Tom Tromey eedc3f4f0a Replace throw_exception with throw in some cases
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.
2019-04-08 09:05:41 -06:00
Tom Tromey 230d2906b9 Rename gdb exception types
This renames the gdb exception types.  The old types were only needed
due to the macros in common-exception.h that are now gone.

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

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

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

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

	* gdbreplay.c: Update.
	* linux-low.c: Update.
	* server.c: Update.
2019-04-08 09:05:40 -06:00
Tom Tromey a70b814420 Rewrite TRY/CATCH
This rewrites gdb's TRY/CATCH to plain C++ try/catch.  The patch was
largely written by script, though one change (to a comment in
common-exceptions.h) was reverted by hand.

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

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

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

	* server.c: Use C++ exception handling.
	* linux-low.c: Use C++ exception handling.
	* gdbreplay.c: Use C++ exception handling.
2019-04-08 09:05:39 -06:00
Tom Tromey 3d6e9d2336 Make exceptions use std::string and be self-managing
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.
2019-04-08 09:05:38 -06:00
Philippe Waroquiers 5783e150b2 (re-)fix the regcache leaks when detaching from an executable.
Commit 799efbe8e0 was supposed to fix
the below leak.  However, for this fix to work, it is critical to
save the ptid before detach.

This commit (pushed as OBVIOUS, as the change was already reviewed/approved)
saves the ptid before the detach, as in the original reviewed patch
(see https://sourceware.org/ml/gdb-patches/2019-02/msg00263.html).

Re-tested on debian/amd64, natively and under valgrind.

==7426== 1,123 (72 direct, 1,051 indirect) bytes in 1 blocks are definitely lost in loss record 2,872 of 3,020
==7426==    at 0x4C2C4CC: operator new(unsigned long) (vg_replace_malloc.c:344)
==7426==    by 0x5BD1E1: get_thread_arch_aspace_regcache(ptid_t, gdbarch*, address_space*) (regcache.c:330)
==7426==    by 0x5BD39A: get_thread_regcache (regcache.c:366)
==7426==    by 0x5BD39A: get_current_regcache() (regcache.c:372)
==7426==    by 0x4B1EB4: get_current_frame() (frame.c:1588)
...
2019-03-24 13:56:46 +01:00
Tom Tromey a068643d69 Change pid_to_str to return std::string
Currently the target pid_to_str method returns a const char *, so many
implementations have a static buffer that they update.  This patch
changes these methods to return a std::string instead.  I think this
is cleaner and avoids possible gotchas when calling pid_to_str on
different ptids in a single statement.  (Though no such calls exist
currently.)

This also updates various helper functions, and the gdbarch pid_to_str
methods.

I also made a best effort to fix all the callers, but I can't build
some of the *-nat.c files.

Tested by the buildbot.

gdb/ChangeLog
2019-03-13  Tom Tromey  <tromey@adacore.com>

	* i386-gnu-nat.c (i386_gnu_nat_target::fetch_registers)
	(i386_gnu_nat_target::store_registers): Update.
	* target-debug.h (target_debug_print_std_string): New macro.
	* x86-linux-nat.c (x86_linux_nat_target::enable_btrace): Update.
	* windows-tdep.c (display_one_tib): Update.
	* tui/tui-stack.c (tui_make_status_line): Update.
	* top.c (print_inferior_quit_action): Update.
	* thread.c (thr_try_catch_cmd): Update.
	(add_thread_with_info): Update.
	(thread_target_id_str): Update.
	(thr_try_catch_cmd): Update.
	(thread_command): Update.
	(thread_find_command): Update.
	* record-btrace.c (record_btrace_target::info_record)
	(record_btrace_resume_thread, record_btrace_target::resume)
	(record_btrace_cancel_resume, record_btrace_step_thread)
	(record_btrace_target::wait, record_btrace_target::wait)
	(record_btrace_target::wait, record_btrace_target::stop): Update.
	* progspace.c (print_program_space): Update.
	* process-stratum-target.c
	(process_stratum_target::thread_address_space): Update.
	* linux-fork.c (linux_fork_mourn_inferior)
	(detach_checkpoint_command, info_checkpoints_command)
	(linux_fork_context): Update.
	(linux_fork_detach): Update.
	(class scoped_switch_fork_info): Update.
	(delete_checkpoint_command): Update.
	* infrun.c (follow_fork_inferior): Update.
	(follow_fork_inferior): Update.
	(proceed_after_vfork_done): Update.
	(handle_vfork_child_exec_or_exit): Update.
	(follow_exec): Update.
	(displaced_step_prepare_throw): Update.
	(displaced_step_restore): Update.
	(start_step_over): Update.
	(resume_1): Update.
	(clear_proceed_status_thread): Update.
	(proceed): Update.
	(print_target_wait_results): Update.
	(do_target_wait): Update.
	(context_switch): Update.
	(stop_all_threads): Update.
	(restart_threads): Update.
	(finish_step_over): Update.
	(handle_signal_stop): Update.
	(switch_back_to_stepped_thread): Update.
	(keep_going_pass_signal): Update.
	(print_exited_reason): Update.
	(normal_stop): Update.
	* inferior.c (inferior_pid_to_str): Change return type.
	(print_selected_inferior): Update.
	(add_inferior): Update.
	(detach_inferior): Update.
	* dummy-frame.c (fprint_dummy_frames): Update.
	* dcache.c (dcache_info_1): Update.
	* btrace.c (btrace_enable, btrace_disable, btrace_teardown)
	(btrace_fetch, btrace_clear): Update.
	* linux-tdep.c (linux_core_pid_to_str): Change return type.
	* i386-cygwin-tdep.c (i386_windows_core_pid_to_str): Change return
	type.
	* fbsd-tdep.c (fbsd_core_pid_to_str): Change return type.
	* sol2-tdep.h (sol2_core_pid_to_str): Change return type.
	* sol2-tdep.c (sol2_core_pid_to_str): Change return type.
	* gdbarch.c, gdbarch.h: Rebuild.
	* gdbarch.sh (core_pid_to_str): Change return type.
	* windows-nat.c (struct windows_nat_target) <pid_to_str>: Change
	return type.
	(windows_nat_target::pid_to_str): Change return type.
	(windows_delete_thread): Update.
	(windows_nat_target::attach): Update.
	(windows_nat_target::files_info): Update.
	* target-delegates.c: Rebuild.
	* sol-thread.c (class sol_thread_target) <pid_to_str>: Change
	return type.
	(sol_thread_target::pid_to_str): Change return type.
	* remote.c (class remote_target) <pid_to_str>: Change return
	type.
	(remote_target::pid_to_str): Change return type.
	(extended_remote_target::attach, remote_target::remote_stop_ns)
	(remote_target::remote_notif_remove_queued_reply)
	(remote_target::push_stop_reply, remote_target::disable_btrace):
	Update.
	(extended_remote_target::attach): Update.
	* remote-sim.c (struct gdbsim_target) <pid_to_str>: Change return
	type.
	(gdbsim_target::pid_to_str): Change return type.
	* ravenscar-thread.c (struct ravenscar_thread_target)
	<pid_to_str>: Change return type.
	(ravenscar_thread_target::pid_to_str): Change return type.
	* procfs.c (class procfs_target) <pid_to_str>: Change return
	type.
	(procfs_target::pid_to_str): Change return type.
	(procfs_target::attach): Update.
	(procfs_target::detach): Update.
	(procfs_target::fetch_registers): Update.
	(procfs_target::store_registers): Update.
	(procfs_target::wait): Update.
	(procfs_target::files_info): Update.
	* obsd-nat.c (obsd_nat_target::pid_to_str): Change return type.
	* nto-procfs.c (struct nto_procfs_target) <pid_to_str>: Change
	return type.
	(nto_procfs_target::pid_to_str): Change return type.
	(nto_procfs_target::files_info, nto_procfs_target::attach): Update.
	* linux-thread-db.c (class thread_db_target) <pid_to_str>: Change
	return type.
	* linux-nat.c (linux_nat_target::pid_to_str): Change return type.
	(exit_lwp): Update.
	(attach_proc_task_lwp_callback, get_detach_signal)
	(detach_one_lwp, resume_lwp, linux_nat_target::resume)
	(linux_nat_target::resume, wait_lwp, stop_callback)
	(maybe_clear_ignore_sigint, stop_wait_callback, status_callback)
	(save_stop_reason, select_event_lwp, linux_nat_filter_event)
	(linux_nat_wait_1, resume_stopped_resumed_lwps)
	(linux_nat_target::wait, linux_nat_stop_lwp): Update.
	* inf-ptrace.c (inf_ptrace_target::pid_to_str): Change return
	type.
	(inf_ptrace_target::attach): Update.
	(inf_ptrace_target::files_info): Update.
	* go32-nat.c (struct go32_nat_target) <pid_to_str>: Change return
	type.
	(go32_nat_target::pid_to_str): Change return type.
	* gnu-nat.c (gnu_nat_target::pid_to_str): Change return type.
	(gnu_nat_target::wait): Update.
	(gnu_nat_target::wait): Update.
	(gnu_nat_target::resume): Update.
	* fbsd-nat.c (fbsd_nat_target::pid_to_str): Change return type.
	(fbsd_nat_target::wait): Update.
	* darwin-nat.c (darwin_nat_target::pid_to_str): Change return
	type.
	(darwin_nat_target::attach): Update.
	* corelow.c (class core_target) <pid_to_str>: Change return type.
	(core_target::pid_to_str): Change return type.
	* target.c (normal_pid_to_str): Change return type.
	(default_pid_to_str): Likewise.
	(target_pid_to_str): Change return type.
	(target_translate_tls_address): Update.
	(target_announce_detach): Update.
	* bsd-uthread.c (struct bsd_uthread_target) <pid_to_str>: Change
	return type.
	(bsd_uthread_target::pid_to_str): Change return type.
	* bsd-kvm.c (class bsd_kvm_target) <pid_to_str>: Change return
	type.
	(bsd_kvm_target::pid_to_str): Change return type.
	* aix-thread.c (class aix_thread_target) <pid_to_str>: Change
	return type.
	(aix_thread_target::pid_to_str): Change return type.
	* target.h (struct target_ops) <pid_to_str>: Change return type.
	(target_pid_to_str, normal_pid_to_str): Likewise.
	* obsd-nat.h (class obsd_nat_target) <pid_to_str>: Change return
	type.
	* linux-nat.h (class linux_nat_target) <pid_to_str>: Change return
	type.
	* inf-ptrace.h (struct inf_ptrace_target) <pid_to_str>: Change
	return type.
	* gnu-nat.h (struct gnu_nat_target) <pid_to_str>: Change return
	type.
	* fbsd-nat.h (class fbsd_nat_target) <pid_to_str>: Change return
	type.
	* darwin-nat.h (class darwin_nat_target) <pid_to_str>: Change
	return type.
2019-03-13 13:50:13 -06:00
John Baldwin 6e056c8178 Add a new gdbarch method to resolve the address of TLS variables.
Permit TLS variable addresses to be resolved purely by an ABI rather
than requiring a target method.  This doesn't try the target method if
the ABI function is present (even if the ABI function fails) to
simplify error handling.

gdb/ChangeLog:

	* gdbarch.sh (get_thread_local_address): New method.
	* gdbarch.h, gdbarch.c: Regenerate.
	* target.c (target_translate_tls_address): Use
	gdbarch_get_thread_local_address if present instead of
	target::get_thread_local_address.
2019-03-12 13:45:47 -07:00
Tom Tromey 06b5b831a0 Change the_dummy_target to be a global
While debugging gdb, I printed the target stack and got:

    (top-gdb) p g_target_stack
    $10 = {
      m_top = thread_stratum,
      m_stack = {0x142b0b0, 0x13da600 <exec_ops>, 0x1c70690, 0x13d63b0 <ravenscar_ops>, 0x0, 0x0, 0x0}
    }

(This is clearly from before the change to make ravenscar
multi-target-capable.)

Here, 0x142b0b0 is the singleton dummy target.  It seems to me that
since this is always a singleton, it would be a bit nicer if it were a
global, so that it would be noted in the above.

This patch implements this idea, and now I get:

    (top-gdb) p g_target_stack
    $2 = {
      m_top = dummy_stratum,
      m_stack = {0x1f1b040 <the_dummy_target>, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}
    }

I did not do the same for the debug target.  It didn't seem as useful
to me.

gdb/ChangeLog
2019-03-05  Tom Tromey  <tromey@adacore.com>

	* target.c (the_dummy_target): Move later.  Change type to
	"dummy_target".
	(initialize_targets): Don't initialize the_dummy_target.
2019-03-05 14:11:17 -07:00
Tom Tromey c119e04082 Remove excess calls to gdb_flush
A customer noticed some mildly odd MI output, where CLI output was
split into multiple MI strings at unusual boundaries, like this:

    ~"$1 = (b => true"
    ~", p => 0x407260"

This is technically correct according to the MI spec, but still
unusual, in that there's no particular reason for the string to be
split where it is.

I tracked this down to a call to gdb_flush in generic_val_print.
Then, I went through all calls to gdb_flush and removed the ones I
thought were superfluous.  In particular:

* Any call in the value-printing code;
* Likewise the type-printing code (just a single call); and
* Any call that immediately followed a printf that obviously
  ended with a newline, my belief being that gdb's standard output
  streams are line buffered (by inheriting the behavior from stdio)

Regression tested on x86-64 Fedora 29.

I didn't add a new test case.  I tend to think we don't necessarily
want to specify this behavior in the tests.  Let me know what you
think of this.

gdb/ChangeLog
2019-03-05  Tom Tromey  <tromey@adacore.com>

	* windows-nat.c (windows_nat_target::attach)
	(windows_nat_target::detach): Don't call gdb_flush.
	* valprint.c (generic_val_print, val_print, val_print_string):
	Don't call gdb_flush.
	* utils.c (defaulted_query): Don't call gdb_flush.
	* typeprint.c (print_type_scalar): Don't call gdb_flush.
	* target.c (target_announce_detach): Don't call gdb_flush.
	* sparc64-tdep.c (adi_print_versions): Don't call gdb_flush.
	* remote.c (extended_remote_target::attach): Don't call
	gdb_flush.
	* procfs.c (procfs_target::detach): Don't call gdb_flush.
	* printcmd.c (do_examine): Don't call gdb_flush.
	(info_display_command): Don't call gdb_flush.
	* p-valprint.c (pascal_val_print): Don't call gdb_flush.
	* nto-procfs.c (nto_procfs_target::attach): Don't call gdb_flush.
	* memattr.c (info_mem_command): Don't call gdb_flush.
	* mdebugread.c (mdebug_build_psymtabs): Don't call gdb_flush.
	* m2-valprint.c (m2_val_print): Don't call gdb_flush.
	* infrun.c (follow_exec, handle_command): Don't call gdb_flush.
	* inf-ptrace.c (inf_ptrace_target::attach): Don't call gdb_flush.
	* hppa-tdep.c (unwind_command): Don't call gdb_flush.
	* gnu-nat.c (gnu_nat_target::attach): Don't call gdb_flush.
	(gnu_nat_target::detach): Don't call gdb_flush.
	* f-valprint.c (f_val_print): Don't call gdb_flush.
	* darwin-nat.c (darwin_nat_target::attach): Don't call gdb_flush.
	* cli/cli-script.c (read_command_lines): Don't call gdb_flush.
	* cli/cli-cmds.c (shell_escape, print_disassembly): Don't call
	gdb_flush.
	* c-valprint.c (c_val_print): Don't call gdb_flush.
	* ada-valprint.c (ada_print_scalar): Don't call gdb_flush.
2019-03-05 08:55:51 -07:00
Philippe Waroquiers 799efbe8e0 Fix regcache leak, and avoid possible regcache access after detach.
Valgrind reports leaks like the below in various tests,
e.g. gdb.threads/attach-slow-waitpid.exp, gdb.ada/task_switch_in_core.exp, ...

Fix the leak by clearing the regcache when detaching from an inferior.
Note that these leaks are 'created' when GDB exits,
when the regcache::current_regcache is destroyed : the elements
of the forward_list are pointers, and the 'pointed to' memory is not
deleted by the forward_list destructor.

Nevertheless, fixing this leak is good as it makes a bunch of
tests 'leak clean'.

Also, it seems strange to keep a register cache for a process from
which GDB detached : it is not clear if this cache is still valid
after detach.  And effectively, when clearing only the regcache,
(and not the frame cache), then the frame cache was still 'pointing'
at this regcache and was used when switching to the child process
in the test gdb.threads/watchpoint-fork.exp, which seems strange.

So, we solve the leak and avoid possible accesses to the regcache
and frame cache of the detached inferior, by clearing both the
regcache and the frame cache.

Tested on debian/amd64, natively, under Valgrind,
and with make check RUNTESTFLAGS="--target_board=native-gdbserver".

==27679== VALGRIND_GDB_ERROR_BEGIN
==27679== 1,123 (72 direct, 1,051 indirect) bytes in 1 blocks are definitely lost in loss record 2,942 of 3,400
==27679==    at 0x4C2C4CC: operator new(unsigned long) (vg_replace_malloc.c:344)
==27679==    by 0x5CDF71: get_thread_arch_aspace_regcache(ptid_t, gdbarch*, address_space*) (regcache.c:330)
==27679==    by 0x5CE12A: get_thread_regcache (regcache.c:366)
==27679==    by 0x5CE12A: get_current_regcache() (regcache.c:372)
==27679==    by 0x4FF63D: post_create_inferior(target_ops*, int) (infcmd.c:452)
==27679==    by 0x43AF62: core_target_open(char const*, int) (corelow.c:458)
==27679==    by 0x408B68: cmd_func(cmd_list_element*, char const*, int) (cli-decode.c:1892)
...

gdb/ChangeLog
2019-02-27  Philippe Waroquiers  <philippe.waroquiers@skynet.be>

	* target.c (target_detach): Clear the regcache and the
	frame cache.
2019-02-27 22:41:16 +01:00
Tom Tromey dea57a6263 Add push_target overload
This adds a push_target overload that takes a "target_ops_up &&".
This removes some calls to release a target_ops_up, and makes the
intent here clearer.

gdb/ChangeLog
2019-02-15  Tom Tromey  <tromey@adacore.com>

	* target.h (push_target): Declare new overload.
	* target.c (push_target): New overload, taking an rvalue reference.
	* remote.c (remote_target::open_1): Use push_target overload.
	* corelow.c (core_target_open): Use push_target overload.
2019-02-15 13:53:43 -07:00
Tom Tromey 1688cb2916 Hoist assertion in target_stack::unpush
I noticed that target_stack::unpush first uses the target "t", then
later asserts that it is non-NULL:

  strata stratum = t->stratum ();
[...]
  gdb_assert (t != NULL);

This is backwards, though, as the assertion must come first.

gdb/ChangeLog
2019-02-05  Tom Tromey  <tom@tromey.com>

	* target.c (target_stack::unpush): Move assertion earlier.
2019-02-05 06:36:48 -07:00
Tom Tromey 0747795c08 Normalize includes to use common/
This changes all includes to use the form "common/filename.h" rather
than just "filename.h".  This was written by a script.

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

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

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

	* win32-low.c: Fix common/ includes.
	* win32-i386-low.c: Fix common/ includes.
	* tracepoint.c: Fix common/ includes.
	* thread-db.c: Fix common/ includes.
	* target.h: Fix common/ includes.
	* symbol.c: Fix common/ includes.
	* spu-low.c: Fix common/ includes.
	* server.h: Fix common/ includes.
	* server.c: Fix common/ includes.
	* remote-utils.c: Fix common/ includes.
	* regcache.h: Fix common/ includes.
	* regcache.c: Fix common/ includes.
	* nto-x86-low.c: Fix common/ includes.
	* notif.h: Fix common/ includes.
	* mem-break.h: Fix common/ includes.
	* lynx-low.c: Fix common/ includes.
	* lynx-i386-low.c: Fix common/ includes.
	* linux-x86-tdesc-selftest.c: Fix common/ includes.
	* linux-x86-low.c: Fix common/ includes.
	* linux-low.c: Fix common/ includes.
	* inferiors.h: Fix common/ includes.
	* i387-fp.c: Fix common/ includes.
	* hostio.c: Fix common/ includes.
	* hostio-errno.c: Fix common/ includes.
	* gdbthread.h: Fix common/ includes.
	* gdbreplay.c: Fix common/ includes.
	* fork-child.c: Fix common/ includes.
	* event-loop.c: Fix common/ includes.
	* ax.c:
	(enum gdb_agent_op): Fix common/ includes.
2019-01-25 15:28:16 -07:00
Pedro Alves adc6a863a9 target_pass_signals/target_program_signals: Use gdb::array_view
This replaces the pointer and length parameters of target_pass_signals
and target_program_signals with a gdb::array_view parameter, and fixes
the fallout.

In infrun.c, the signal_stop, signal_print, signal_program,
signal_catch, signal_pass globals are currently pointers to
heap-allocated memory.  I see no point in that, so I converted them to
arrays.  This allows simplifying the calls to
target_pass_signals/target_program_signals, since we can pass the
array directly, which can implicitly convert to gdb::array_view.

gdb/ChangeLog:
2019-01-24  Pedro Alves  <palves@redhat.com>

	* infrun.c (signal_stop, signal_print, signal_program)
	(signal_catch, signal_pass): Now arrays instead of pointers.
	(update_signals_program_target, do_target_resume)
	(signal_catch_update, handle_command, _initialize_infrun): Adjust.
	* linux-nat.c (linux_nat_target::pass_signals)
	(linux_nat_target::create_inferior, linux_nat_target::attach):
	Adjust.
	* linux-nat.h (linux_nat_target::pass_signals): Adjust.
	* nto-procfs.c (nto_procfs_target::pass_signals): Adjust.
	* procfs.c (procfs_target::pass_signals): Adjust.
	* record-full.c (record_full_target::resume): Adjust.
	* remote.c (remote_target::pass_signals)
	(remote_target::program_signals): Adjust.
	* target-debug.h (target_debug_print_signals): Now takes a
	gdb::array_view as parameter.  Adjust.
	* target.h (target_ops) <pass_signals, program_signals>: Replace
	pointer and length parameters with gdb::array_view.
	(target_pass_signals, target_program_signals): Likewise.
	* target-delegates.c: Regenerate.
2019-01-24 18:25:06 +00:00
Tom Tromey be6d4f74c7 Remove duplicate or commented-out #includes
I wrote a little script to detect duplicate or commented-out #includes
and ran it on gdb.  This patch is the result.  Tested by rebuilding.

gdb/ChangeLog
2019-01-21  Tom Tromey  <tom@tromey.com>

	* ui-out.c: Fix includes.
	* tui/tui-source.c: Fix includes.
	* target.c: Fix includes.
	* remote.c: Fix includes.
	* regcache.c: Fix includes.
	* python/py-block.c: Fix includes.
	* printcmd.c: Fix includes.
	* or1k-tdep.c: Fix includes.
	* mi/mi-main.c: Fix includes.
	* m32r-tdep.c: Fix includes.
	* csky-tdep.c: Fix includes.
	* compile/compile-cplus-types.c: Fix includes.
	* cli/cli-interp.c: Fix includes.

gdb/gdbserver/ChangeLog
2019-01-21  Tom Tromey  <tom@tromey.com>

	* tracepoint.c: Fix includes.
	* remote-utils.c: Fix includes.
	* linux-x86-low.c: Fix includes.

gdb/stubs/ChangeLog
2019-01-21  Tom Tromey  <tom@tromey.com>

	* ia64vms-stub.c: Fix includes.
2019-01-21 11:14:07 -07:00
Tom Tromey 491adecac4 Constify target_pass_signals and target_program_signals
This constifies the final parameter to target_pass_signals and
target_program_signals and updates the rest of gdb.

Note that I have no way to test the nto-procfs.c change.

gdb/ChangeLog
2019-01-14  Tom Tromey  <tom@tromey.com>

	* target-debug.h (target_debug_print_signals): Constify.
	* nto-procfs.c (nto_procfs_target::pass_signals): Update.
	* procfs.c (procfs_target::pass_signals): Update.
	* linux-nat.c (linux_nat_target::pass_signals): Update.
	* linux-nat.h (class linux_nat_target) <pass_signals>: Update.
	* target-delegates.c: Rebuild.
	* remote.c (remote_target::program_signals): Update.
	(remote_target::pass_signals): Update.
	* target.c (target_pass_signals): Constify argument.
	(target_program_signals): Likewise.
	* target.h (struct target_ops) <pass_signals, program_signals>:
	Constify argument.
	(target_pass_signals, target_program_signals): Constify argument.
2019-01-14 17:32:24 -07:00
Joel Brobecker 42a4f53d2b Update copyright year range in all GDB files.
This commit applies all changes made after running the gdb/copyright.py
script.

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

gdb/ChangeLog:

	Update copyright year range in all GDB files.
2019-01-01 10:01:51 +04:00
Simon Marchi 84b68c77e7 target.c: Remove struct keyword in range-based for
I get this when compiling with a gcc 6.3.0-based cross-compiler:

  CXX    target.o
/home/simark/src/binutils-gdb/gdb/target.c: In static member function 'static void target_terminal::restore_inferior()':
/home/simark/src/binutils-gdb/gdb/target.c:396:10: error: types may not be defined in a for-range-declaration [-Werror]
     for (struct inferior *inf : all_inferiors ())
          ^~~~~~

Accomodate it by dropping the unnecessary struct keyword.  Actually, I used
"::inferior", otherwise it resolves to the inferior method of the
target_terminal class.

gdb/ChangeLog:

	* target.c (target_terminal::restore_inferior): Remove struct keyword.
2018-12-26 20:14:18 -05:00
Paul Marechal d00a27c5ad gdb: Fix "info os <unknown>" command
Running `info os someUnknownOsType` is crashing when gdb is built with
-D_GLIBCXX_DEBUG:

	/usr/include/c++/5/debug/vector:439:error: attempt to
	access an element in an empty container.

In target_read_stralloc from target.c, the call to
target_read_alloc_1 can return an empty vector, we then call vector::back on
this vector, which is invalid.

This commit adds a check for emptiness before trying to call
vector::back on it. It also adds test to check for `info os <unknown>`
to return the proper error message.

This is a regression in gdb 8.2 and this patch restores the behavior of
previous versions.

gdb/ChangeLog:

	PR gdb/23974
	* target.c (target_read_stralloc): Check for empty vector.

gdb/testsuite/ChangeLog:

	PR gdb/23974
	* gdb.base/info-os.exp: Check return for unknown "info os" type.
2018-12-21 13:04:43 -05:00
Pedro Alves 66b4deae03 target_ops::to_stratum -> target_ops::stratum() virtual method
Given that a target's stratum is a property of the type, and not of an
instance of the type, get rid of to_stratum data field and replace it
with a virtual method.

I.e., when we have e.g., 10 target remote instances active, there's no
need for each of the instances to have their own to_stratum copy.

gdb/ChangeLog:
2018-11-30  Pedro Alves  <palves@redhat.com>

	* aix-thread.c (aix_thread_target) <aix_thread_target>: Delete.
	<stratum>: New override.
	* bfd-target.c (aix_thread_target) <aix_thread_target>: Delete.
	<stratum>: New override.
	* bsd-uthread.c (bsd_uthread_target) <bsd_uthread_target>: Delete.
	<stratum>: New override.
	* exec.c (exec_target) <exec_target>: Delete.
	<stratum>: New override.
	* gdbarch-selftests.c (register_to_value_test): Adjust to use the
	stratum method instead of the to_stratum field.
	* linux-thread-db.c (thread_db_target) <thread_db_target>: Delete.
	<stratum>: New override.
	(thread_db_target::thread_db_target): Delete.
	* make-target-delegates (print_class): Don't print a ctor
	declaration.  Print a stratum method override declaration.
	* process-stratum-target.h (process_stratum_target)
	<process_stratum_target>: Delete.
	<stratum>: New override.
	* ravenscar-thread.c (ravenscar_thread_target)
	<ravenscar_thread_target>: Delete.
	<stratum>: New override.
	* record-btrace.c (record_btrace_target)
	<record_btrace_target>: Delete.
	<stratum>: New override.
	* record-full.c (record_full_base_target)
	<record_full_base_target>: Delete.
	<stratum>: New override.
	* record.c (record_disconnect, record_detach)
	(record_mourn_inferior, record_kill): Adjust to use the stratum
	method instead of the to_stratum field.
	* regcache.c (cooked_read_test, cooked_write_test): Likewise.
	* sol-thread.c (sol_thread_target)
	<sol_thread_target>: Delete.
	<stratum>: New override.
	* spu-multiarch.c (spu_multiarch_target)
	<spu_multiarch_target>: Delete.
	<stratum>: New override.
	* target-delegates.c: Regenerate.
	* target.c (target_stack::push, target_stack::unpush)
	(pop_all_targets_above, pop_all_targets_at_and_above)
	(info_target_command, target_require_runnable)
	(target_stack::find_beneath): Adjust to use the stratum method
	instead of the to_stratum field.
	(dummy_target::dummy_target): Delete.
	(dummy_target::stratum): New.
	(debug_target::debug_target): Delete.
	(debug_target::stratum): New.
	(maintenance_print_target_stack): Adjust to use the stratum method
	instead of the to_stratum field.
	* target.h (struct target_ops) <stratum>: New method.
	<to_stratum>: Delete.
	<is_pushed>: Adjust to use the stratum method
	instead of the to_stratum field.
2018-11-30 17:49:49 +00:00
Pedro Alves f3d11a9a96 Convert default_child_has_foo functions to process_stratum_target methods
This patch converts the default_child_has_foo functions to
process_stratum_target methods.  This simplifies "regular"
non-inf_child process_stratum targets, since they no longer have to
override the target_ops::has_foo methods to call the default_child_foo
functions.  A couple targets need to override the new defaults
(corelow and tracefiles), but it still seems like a good tradeoff,
since those are expected to be little different (target doesn't run).

gdb/ChangeLog:
2018-11-30  Pedro Alves  <palves@redhat.com>

	* corelow.c (core_target) <has_all_memory, has_execution>: New
	overrides.
	* inf-child.c (inf_child_target::has_all_memory)
	(inf_child_target::has_memory, inf_child_target::has_stack)
	(inf_child_target::has_registers)
	(inf_child_target::has_execution): Delete.
	* inf-child.h (inf_child_target) <has_all_memory, has_memory,
	has_stack, has_registers, has_execution>: Delete.
	* process-stratum-target.c
	(process_stratum_target::has_all_memory)
	(process_stratum_target::has_memory)
	(process_stratum_target::has_stack)
	(process_stratum_target::has_registers)
	(process_stratum_target::has_execution): New.
	* process-stratum-target.h (process_stratum_target)
	<has_all_memory, has_memory, has_stack, has_registers,
	has_execution>: New method overrides.
	* ravenscar-thread.c (ravenscar_thread_target) <has_all_memory,
	has_memory, has_stack, has_registers, has_execution>: Delete.
	* remote-sim.c (gdbsim_target) <has_stack, has_registers,
	has_execution>: Delete.
	* remote.c (remote_target) <has_all_memory, has_memory, has_stack,
	has_registers, has_execution>: Delete.
	* target.c (default_child_has_all_memory)
	(default_child_has_memory, default_child_has_stack)
	(default_child_has_registers, default_child_has_execution):
	Delete.
	* target.h (default_child_has_all_memory)
	(default_child_has_memory, default_child_has_stack)
	(default_child_has_registers, default_child_has_execution):
	Delete.
	* tracefile.h (tracefile_target) <has_execution>: New override.
2018-11-30 16:28:11 +00:00
Pedro Alves 3b3dac9b3f Introduce process_stratum_target
This adds a base class that all process_stratum targets inherit from.

default_thread_address_space/default_thread_architecture only make
sense for process_stratum targets, so they are transformed to
process_stratum_target methods/overrides.

gdb/ChangeLog:
2018-11-30  Pedro Alves  <palves@redhat.com>

	* Makefile.in (COMMON_SFILES): Add process-stratum-target.c.
	* bsd-kvm.c: Include "process-stratum-target.h".
	(bsd_kvm_target): Now inherits from process_stratum_target.
	(bsd_kvm_target::bsd_kvm_target): Default it.
	* corelow.c: Include "process-stratum-target.h".
	(core_target): Now inherits from process_stratum_target.
	(core_target::core_target): Don't set to_stratum here.
	* inf-child.c (inf_child_target::inf_child_target): Delete.
	* inf-child.h: Include "process-stratum-target.h".
	(inf_child_target): Inherit from process_stratum_target.
	(inf_child_target) <inf_child_target>: Default it.
	<can_async_p, supports_non_stop, supports_disable_randomization>:
	Delete overrides.
	* process-stratum-target.c: New file.
	* process-stratum-target.h: New file.
	* remote-sim.c: Include "process-stratum-target.h".
	(gdbsim_target): Inherit from process_stratum_target.
	<gdbsim_target>: Default it.
	* remote.c: Include "process-stratum-target.h".
	(remote_target): Inherit from process_stratum_target.
	<remote_target>: Default it.
	* target.c (default_thread_address_space)
	(default_thread_architecture): Delete.
	* target.h (target_ops) <thread_architecture>: Now returns NULL by
	default.
	<thread_address_space>: Ditto.
	* test-target.h: Include "process-stratum-target.h" instead of
	"target.h".
	(test_target_ops): Inherit from process_stratum_target.
	<test_target_ops>: Default it.
	* tracefile.c (tracefile_target::tracefile_target): Delete.
	* tracefile.h: Include "process-stratum-target.h".
	(tracefile_target): Inherit from process_stratum_target.
	<tracefile_target>: Default it.
	* target-delegates.c: Regenerate.
2018-11-30 16:27:26 +00:00
Pedro Alves c180496d2a Move test_target_ops to a separate file
There's no need to have all target.h users seeing this type.

Also helps with a follow up patch.

gdb/ChangeLog:
2018-11-30  Pedro Alves  <palves@redhat.com>

	* Makefile.in (COMMON_SFILES): Add test-target.c.
	* gdbarch-selftests.c: Include "test-target.h".
	* regcache.c: Include "test-target.h".
	* target.c (test_target_info, test_target_ops::info): Move to ...
	* test-target.c: ... this new file.
	* target.h (test_target_ops): Move to ...
	* test-target.h: ... this new file.
2018-11-30 14:53:38 +00:00
Pedro Alves 0803633106 Per-inferior thread list, thread ranges/iterators, down with ALL_THREADS, etc.
As preparation for multi-target, this patch makes each inferior have
its own thread list.

This isn't absolutely necessary for multi-target, but simplifies
things.  It originally stemmed from the desire to eliminate the
init_thread_list calls sprinkled around, plus it makes it more
efficient to iterate over threads of a given inferior (no need to
always iterate over threads of all inferiors).

We still need to iterate over threads of all inferiors in a number of
places, which means we'd need adjust the ALL_THREADS /
ALL_NON_EXITED_THREADS macros.  However, naively tweaking those macros
to have an extra for loop, like:

     #define ALL_THREADS (thr, inf) \
       for (inf = inferior_list; inf; inf = inf->next) \
	 for (thr = inf->thread_list; thr; thr = thr->next)

causes problems with code that does "break" or "continue" within the
ALL_THREADS loop body.  Plus, we need to declare the extra "inf" local
variable in order to pass it as temporary variable to ALL_THREADS
(etc.)

It gets even trickier when we consider extending the macros to filter
out threads matching a ptid_t and a target.  The macros become tricker
to read/write.  Been there.

An alternative (which was my next attempt), is to replace the
ALL_THREADS etc. iteration style with for_each_all_threads,
for_each_non_exited_threads, etc. functions which would take a
callback as parameter, which would usually be passed a lambda.
However, I did not find that satisfactory at all, because the
resulting code ends up a little less natural / more noisy to read,
write and debug/step-through (due to use of lambdas), and in many
places where we use "continue;" to skip to the next thread now need to
use "return;".  (I ran into hard to debug bugs caused by a
continue/return confusion.)

I.e., before:

    ALL_NON_EXITED_THREADS (tp)
      {
	if (tp->not_what_I_want)
	  continue;
	// do something
      }

would turn into:

    for_each_non_exited_thread ([&] (thread_info *tp)
      {
	if (tp->not_what_I_want)
	  return;
	// do something
      });

Lastly, the solution I settled with was to replace the ALL_THREADS /
ALL_NON_EXITED_THREADS / ALL_INFERIORS macros with (C++20-like) ranges
and iterators, such that you can instead naturaly iterate over
threads/inferiors using range-for, like e.g,.:

   // all threads, including THREAD_EXITED threads.
   for (thread_info *tp : all_threads ())
     { .... }

   // all non-exited threads.
   for (thread_info *tp : all_non_exited_threads ())
     { .... }

   // all non-exited threads of INF inferior.
   for (thread_info *tp : inf->non_exited_threads ())
     { .... }

The all_non_exited_threads() function takes an optional filter ptid_t as
parameter, which is quite convenient when we need to iterate over
threads matching that filter.  See e.g., how the
set_executing/set_stop_requested/finish_thread_state etc. functions in
thread.c end up being simplified.

Most of the patch thus is about adding the infrustructure for allowing
the above.  Later on when we get to actual multi-target, these
functions/ranges/iterators will gain a "target_ops *" parameter so
that e.g., we can iterate over all threads of a given target that
match a given filter ptid_t.

The only entry points users needs to be aware of are the
all_threads/all_non_exited_threads etc. functions seen above.  Thus,
those functions are declared in gdbthread.h/inferior.h.  The actual
iterators/ranges are mainly "internals" and thus are put out of view
in the new thread-iter.h/thread-iter.c/inferior-iter.h files.  That
keeps the gdbthread.h/inferior.h headers quite a bit more readable.

A common/safe-iterator.h header is added which adds a template that
can be used to build "safe" iterators, which are forward iterators
that can be used to replace the ALL_THREADS_SAFE macro and other
instances of the same idiom in future.

There's a little bit of shuffling of code between
gdbthread.h/thread.c/inferior.h in the patch.  That is necessary in
order to avoid circular dependencies between the
gdbthread.h/inferior.h headers.

As for the init_thread_list calls sprinkled around, they're all
eliminated by this patch, and a new, central call is added to
inferior_appeared.  Note how also related to that, there's a call to
init_wait_for_inferior in remote.c that is eliminated.
init_wait_for_inferior is currently responsible for discarding skipped
inline frames, which had to be moved elsewhere.  Given that nowadays
we always have a thread even for single-threaded processes, the
natural place is to delete a frame's inline frame info when we delete
the thread.  I.e., from clear_thread_inferior_resources.

gdb/ChangeLog:
2018-11-22  Pedro Alves  <palves@redhat.com>

	* Makefile.in (COMMON_SFILES): Add thread-iter.c.
	* breakpoint.c (breakpoints_should_be_inserted_now): Replace
	ALL_NON_EXITED_THREADS with all_non_exited_threads.
	(print_one_breakpoint_location): Replace ALL_INFERIORS with
	all_inferiors.
	* bsd-kvm.c: Include inferior.h.
	* btrace.c (btrace_free_objfile): Replace ALL_NON_EXITED_THREADS
	with all_non_exited_threads.
	* common/filtered-iterator.h: New.
	* common/safe-iterator.h: New.
	* corelow.c (core_target_open): Don't call init_thread_list here.
	* darwin-nat.c (thread_info_from_private_thread_info): Replace
	ALL_THREADS with all_threads.
	* fbsd-nat.c (fbsd_nat_target::resume): Replace
	ALL_NON_EXITED_THREADS with inf->non_exited_threads.
	* fbsd-tdep.c (fbsd_make_corefile_notes): Replace
	ALL_NON_EXITED_THREADS with inf->non_exited_threads.
	* fork-child.c (postfork_hook): Don't call init_thread_list here.
	* gdbarch-selftests.c (register_to_value_test): Adjust.
	* gdbthread.h: Don't include "inferior.h" here.
	(struct inferior): Forward declare.
	(enum step_over_calls_kind): Moved here from inferior.h.
	(thread_info::deletable): Definition moved to thread.c.
	(find_thread_ptid (inferior *, ptid_t)): Declare.
	(ALL_THREADS, ALL_THREADS_BY_INFERIOR, ALL_THREADS_SAFE): Delete.
	Include "thread-iter.h".
	(all_threads, all_non_exited_threads, all_threads_safe): New.
	(any_thread_p): Declare.
	(thread_list): Delete.
	* infcmd.c (signal_command): Replace ALL_NON_EXITED_THREADS with
	all_non_exited_threads.
	(proceed_after_attach_callback): Delete.
	(proceed_after_attach): Take an inferior pointer instead of an
	integer PID.  Adjust to use range-for.
	(attach_post_wait): Pass down inferior pointer instead of pid.
	Use range-for instead of ALL_NON_EXITED_THREADS.
	(detach_command): Remove init_thread_list call.
	* inferior-iter.h: New.
	* inferior.c (struct delete_thread_of_inferior_arg): Delete.
	(delete_thread_of_inferior): Delete.
	(delete_inferior, exit_inferior_1): Use range-for with
	inf->threads_safe() instead of iterate_over_threads.
	(inferior_appeared): Call init_thread_list here.
	(discard_all_inferiors): Use all_non_exited_inferiors.
	(find_inferior_id, find_inferior_pid): Use all_inferiors.
	(iterate_over_inferiors): Use all_inferiors_safe.
	(have_inferiors, number_of_live_inferiors): Use
	all_non_exited_inferiors.
	(number_of_inferiors): Use all_inferiors and std::distance.
	(print_inferior): Use all_inferiors.
	* inferior.h: Include gdbthread.h.
	(enum step_over_calls_kind): Moved to gdbthread.h.
	(struct inferior) <thread_list>: New field.
	<threads, non_exited_threads, threads_safe>: New methods.
	(ALL_INFERIORS): Delete.
	Include "inferior-iter.h".
	(ALL_NON_EXITED_INFERIORS): Delete.
	(all_inferiors_safe, all_inferiors, all_non_exited_inferiors): New
	functions.
	* inflow.c (child_interrupt, child_pass_ctrlc): Replace
	ALL_NON_EXITED_THREADS with all_non_exited_threads.
	* infrun.c (follow_exec): Use all_threads_safe.
	(clear_proceed_status, proceed): Use all_non_exited_threads.
	(init_wait_for_inferior): Don't clear inline frame state here.
	(infrun_thread_stop_requested, for_each_just_stopped_thread): Use
	all_threads instead of ALL_NON_EXITED_THREADS.
	(random_pending_event_thread): Use all_non_exited_threads instead
	of ALL_NON_EXITED_THREADS.  Use a lambda for repeated code.
	(clean_up_just_stopped_threads_fsms): Use all_non_exited_threads
	instead of ALL_NON_EXITED_THREADS.
	(handle_no_resumed): Use all_non_exited_threads instead of
	ALL_NON_EXITED_THREADS.  Use all_inferiors instead of
	ALL_INFERIORS.
	(restart_threads, switch_back_to_stepped_thread): Use
	all_non_exited_threads instead of ALL_NON_EXITED_THREADS.
	* linux-nat.c (check_zombie_leaders): Replace ALL_INFERIORS with
	all_inferiors.
	(kill_unfollowed_fork_children): Use inf->non_exited_threads
	instead of ALL_NON_EXITED_THREADS.
	* linux-tdep.c (linux_make_corefile_notes): Use
	inf->non_exited_threads instead of ALL_NON_EXITED_THREADS.
	* linux-thread-db.c (thread_db_target::update_thread_list):
	Replace ALL_INFERIORS with all_inferiors.
	(thread_db_target::thread_handle_to_thread_info): Use
	inf->non_exited_threads instead of ALL_NON_EXITED_THREADS.
	* mi/mi-interp.c (multiple_inferiors_p): New.
	(mi_on_resume_1): Simplify using all_non_exited_threads and
	multiple_inferiors_p.
	* mi/mi-main.c (mi_cmd_thread_list_ids): Use all_non_exited_threads
	instead of ALL_NON_EXITED_THREADS.
	* nto-procfs.c (nto_procfs_target::open): Don't call
	init_thread_list here.
	* record-btrace.c (record_btrace_target_open)
	(record_btrace_target::stop_recording)
	(record_btrace_target::close)
	(record_btrace_target::record_is_replaying)
	(record_btrace_target::resume, record_btrace_target::wait)
	(record_btrace_target::record_stop_replaying): Use
	all_non_exited_threads instead of ALL_NON_EXITED_THREADS.
	* record-full.c (record_full_wait_1): Use all_non_exited_threads
	instead of ALL_NON_EXITED_THREADS.
	* regcache.c (cooked_read_test): Remove reference to global
	thread_list.
	* remote-sim.c (gdbsim_target::create_inferior): Don't call
	init_thread_list here.
	* remote.c (remote_target::update_thread_list): Use
	all_threads_safe instead of ALL_NON_EXITED_THREADS.
	(remote_target::process_initial_stop_replies): Replace
	ALL_INFERIORS with all_non_exited_inferiors and use
	all_non_exited_threads instead of ALL_NON_EXITED_THREADS.
	(remote_target::open_1): Don't call init_thread_list here.
	(remote_target::append_pending_thread_resumptions)
	(remote_target::remote_resume_with_hc): Use all_non_exited_threads
	instead of ALL_NON_EXITED_THREADS.
	(remote_target::commit_resume)
	(remote_target::remove_new_fork_children): Replace ALL_INFERIORS
	with all_non_exited_inferiors and use all_non_exited_threads
	instead of ALL_NON_EXITED_THREADS.
	(remote_target::kill_new_fork_children): Use
	all_non_exited_threads instead of ALL_NON_EXITED_THREADS.  Remove
	init_thread_list and init_wait_for_inferior calls.
	(remote_target::remote_btrace_maybe_reopen)
	(remote_target::thread_handle_to_thread_info): Use
	all_non_exited_threads instead of ALL_NON_EXITED_THREADS.
	* target.c (target_terminal::restore_inferior)
	(target_terminal_is_ours_kind): Replace ALL_INFERIORS with
	all_non_exited_inferiors.
	* thread-iter.c: New file.
	* thread-iter.h: New file.
	* thread.c: Include "inline-frame.h".
	(thread_list): Delete.
	(clear_thread_inferior_resources): Call clear_inline_frame_state.
	(init_thread_list): Use all_threads_safe instead of
	ALL_THREADS_SAFE.  Adjust to per-inferior thread lists.
	(new_thread): Adjust to per-inferior thread lists.
	(add_thread_silent): Pass inferior to find_thread_ptid.
	(thread_info::deletable): New, moved from the header.
	(delete_thread_1): Adjust to per-inferior thread lists.
	(find_thread_global_id): Use inf->threads().
	(find_thread_ptid): Use find_inferior_ptid and pass inferior to
	find_thread_ptid.
	(find_thread_ptid(inferior*, ptid_t)): New overload.
	(iterate_over_threads): Use all_threads_safe.
	(any_thread_p): New.
	(thread_count): Use all_threads and std::distance.
	(live_threads_count): Use all_non_exited_threads and
	std::distance.
	(valid_global_thread_id): Use all_threads.
	(in_thread_list): Use find_thread_ptid.
	(first_thread_of_inferior): Adjust to per-inferior thread lists.
	(any_thread_of_inferior, any_live_thread_of_inferior): Use
	inf->non_exited_threads().
	(prune_threads, delete_exited_threads): Use all_threads_safe.
	(thread_change_ptid): Pass inferior pointer to find_thread_ptid.
	(set_resumed, set_running): Use all_non_exited_threads.
	(is_thread_state, is_stopped, is_exited, is_running)
	(is_executing): Delete.
	(set_executing, set_stop_requested, finish_thread_state): Use
	all_non_exited_threads.
	(print_thread_info_1): Use all_inferiors and all_threads.
	(thread_apply_all_command): Use all_non_exited_threads.
	(thread_find_command): Use all_threads.
	(update_threads_executing): Use all_non_exited_threads.
	* tid-parse.c (parse_thread_id): Use inf->threads.
	* x86-bsd-nat.c (x86bsd_dr_set): Use inf->non_exited_threads ().
2018-11-22 16:13:23 +00:00
Tom Tromey 20f0d60db4 Avoid crash when calling warning too early
I noticed that if you pass the name of an existing file (not a
directory) as the argument to --data-directory, gdb will crash:

    $ ./gdb -nx  --data-directory  ./gdb
    ../../binutils-gdb/gdb/target.c:590:56: runtime error: member call on null pointer of type 'struct target_ops'

This was later reported as PR gdb/23838.

This happens because warning ends up calling
target_supports_terminal_ours, which calls current_top_target, which
returns nullptr this early.

This fixes the problem by handling this case specially in
target_supports_terminal_ours.  I also changed
target_supports_terminal_ours to return bool.

gdb/ChangeLog
2018-11-08  Tom Tromey  <tom@tromey.com>

	PR gdb/23555:
	PR gdb/23838:
	* target.h (target_supports_terminal_ours): Return bool.
	* target.c (target_supports_terminal_ours): Handle case where
	current_top_target returns nullptr.  Return bool.

gdb/testsuite/ChangeLog
2018-11-08  Tom Tromey  <tom@tromey.com>

	PR gdb/23555:
	PR gdb/23838:
	* gdb.base/warning.exp: New file.
2018-11-08 16:10:21 -07:00
Simon Marchi fdbac7d8d1 Fix some comments in target.c
Fix a typo and add a missing one.

gdb/ChangeLog:

	* target.c (str_comma_list_concat_elem): Fix typo in comment.
	(target_options_to_string): Add comment.
2018-08-08 18:13:18 -04:00
Andrew Burgess 9d4a934ce6 gdb: Fix assert for extended-remote target (PR gdb/18050)
Consider the following GDB session:

   (gdb) target extended-remote :2347
   (gdb) file /path/to/exe
   (gdb) set remote exec-file /path/to/exe
   (gdb) set detach-on-fork off
   (gdb) break breakpt
   (gdb) run
   # ... hits breakpoint
   (gdb) info inferiors
     Num  Description       Executable
   * 1    process 17001     /path/to/exe
     2    process 17002     /path/to/exe
   (gdb) kill
   (gdb) info inferiors
     Num  Description       Executable
   * 1    <null>            /path/to/exe
     2    process 17002     /path/to/exe
   (gdb) target extended-remote :2348
   ../../src/gdb/thread.c:660: internal-error: thread_info* any_thread_of_process(int): Assertion `pid != 0' failed.
   A problem internal to GDB has been detected,
   further debugging may prove unreliable.

Or, from bug PR gdb/18050:

   (gdb) start
   (gdb) add-inferior -exec /path/to/exe
   (gdb) target extended-remote :2347
   ../../src/gdb/thread.c:660: internal-error: thread_info* any_thread_of_process(int): Assertion `pid != 0' failed.
   A problem internal to GDB has been detected,
   further debugging may prove unreliable.

The issue is calling target.c:dispose_inferior with a killed inferior in
the inferior list.  This assertion is fixed in this commit.

The new test for this issue only runs on platforms that support
'detach-on-fork', and when using
'--target_board=native-extended-gdbserver'.

gdb/ChangeLog:

	PR gdb/18050:
	* target.c (dispose_inferior): Don't dispose of inferiors that are
	already killed.

gdb/testsuite/ChangeLog:

	PR gdb/18050:
	* gdb.server/extended-remote-restart.c: New file.
	* gdb.server/extended-remote-restart.exp: New file.
2018-08-08 13:14:45 +01:00
Simon Marchi 09ce46f230 Make target_options_to_string return an std::string
Return an std::string instead of a char *, saving some manual freeing.

I only manually tested with "set debug target 1" and "set debug lin-lwp
1", since this only deals with debug output.

gdb/ChangeLog:

	* target.h (target_options_to_string): Return an std::string.
	* target.c (str_comma_list_concat_elem): Return void, use
	std::string.
	(do_option): Likewise.
	(target_options_to_string): Return an std::string.
	* linux-nat.c (linux_nat_target::wait): Adjust.
	* target-debug.h (target_debug_print_options): Adjust.
2018-08-07 21:38:27 -04:00
Tom Tromey 8d49165d83 Simple unused variable removals
This patch holds all the straightforward unused variable deletions.

gdb/ChangeLog
2018-07-22  Tom Tromey  <tom@tromey.com>

	* guile/scm-value.c (gdbscm_value_call): Remove unused variables.
	* guile/scm-math.c (vlscm_unop_gdbthrow, vlscm_binop_gdbthrow)
	(vlscm_convert_typed_value_from_scheme): Remove unused variable.
	* buildsym-legacy.c (get_macro_table): Remove unused variable.
	* stack.c (frame_apply_level_command): Remove unused variable.
	* tic6x-tdep.c (tic6x_push_dummy_call): Remove unused variable.
	* sparc64-tdep.c (adi_examine_command): Remove unused variable.
	* rs6000-lynx178-tdep.c (rs6000_lynx178_push_dummy_call): Remove
	unused variable.
	* nios2-tdep.c (nios2_push_dummy_call): Remove unused variable.
	* mep-tdep.c (mep_push_dummy_call): Remove unused variable.
	* ada-lang.c (ada_lookup_symbol_list_worker): Remove unused
	variable.
	* amd64-tdep.c (amd64_supply_xsave): Remove unused variable.
	* arm-tdep.c (arm_record_data_proc_misc_ld_str): Remove unused
	variable.
	* breakpoint.c (check_no_tracepoint_commands, update_watchpoint):
	Remove unused variable.
	* cli/cli-script.c (recurse_read_control_structure): Remove unused
	variable.
	* common/tdesc.c (print_xml_feature::visit): Remove unused
	variable.
	* compile/compile-object-load.c (store_regs): Remove unused
	variables.
	* complaints.c (clear_complaints): Remove unused variable.
	* corelow.c (core_target_open): Remove unused variable.
	* fbsd-tdep.c (fbsd_core_info_proc_status): Remove unused
	variable.
	* guile/scm-frame.c (gdbscm_frame_read_var): Remove unused
	variable.
	* guile/scm-symtab.c (stscm_print_sal_smob): Remove unused
	variable.
	* guile/scm-type.c (gdbscm_field_baseclass_p): Remove unused
	variable.
	* guile/scm-utils.c (gdbscm_parse_function_args): Remove unused
	variable.
	* hppa-tdep.c (hppa_stub_frame_unwind_cache): Remove unused
	variable.
	* ia64-tdep.c (examine_prologue): Remove unused variable.
	* infcall.c (run_inferior_call): Remove unused variable.
	* inferior.c (exit_inferior): Remove unused variable.
	* infrun.c (infrun_thread_ptid_changed): Remove unused variable.
	* linespec.c (decode_line_2): Remove unused variable.
	* linux-nat.c (super_close): Remove.
	* linux-tdep.c (linux_info_proc): Remove unused variable.
	* mi/mi-main.c (mi_execute_command): Remove unused variable.
	* microblaze-linux-tdep.c (microblaze_linux_sigtramp_cache):
	Remove unused variable.
	* parse.c (find_minsym_type_and_address): Remove unused variable.
	* printcmd.c (info_symbol_command, printf_floating): Remove unused
	variable.
	* python/py-breakpoint.c (bppy_set_commands): Remove unused
	variable.
	* python/py-unwind.c (unwind_infopy_dealloc): Remove unused
	variables.
	* record-btrace.c (record_btrace_target::store_registers): Remove
	unused variable.
	(cmd_show_record_btrace_cpu): Remove unused variable.
	* riscv-tdep.c (riscv_register_reggroup_p)
	(riscv_push_dummy_call, riscv_return_value): Remove unused
	variable.
	* rust-exp.y (literal): Remove unused variable.
	* rust-lang.c (rust_evaluate_subexp) <OP_RUST_ARARAY>: Remove
	unused variable.
	<STRUCTOP_ANONYMOUS>: Likewise.
	* s390-linux-tdep.c (s390_linux_init_abi_31)
	(s390_linux_init_abi_64): Remove unused variable.
	* ser-ming2.c (ser_windows_read_prim, pipe_select_thread)
	(file_select_thread, net_windows_open, _initialize_ser_windows):
	Remove unused variables.
	* symtab.c (find_pc_sect_line): Remove unused variable.
	* target-memory.c (compute_garbled_blocks): Remove unused
	variable.
	(target_write_memory_blocks): Remove unused variable.
	* target.c (target_stack::unpush): Remove unused variables.
	* tracepoint.c (start_tracing, all_tracepoint_actions)
	(merge_uploaded_trace_state_variables)
	(print_one_static_tracepoint_marker): Remove unused variable.
	* unittests/basic_string_view/element_access/char/1.cc (test01):
	Remove unused variable.
	* windows-nat.c (windows_continue, windows_add_all_dlls)
	(do_initial_windows_stuff, windows_nat_target::create_inferior):
	Remove unused variables.
2018-07-22 13:20:01 -06:00
Tom Tromey d7e15655a4 Remove ptid_equal
Remove ptid_equal in favor of using "==".

gdb/ChangeLog
2018-07-03  Tom Tromey  <tom@tromey.com>

	* common/ptid.c (ptid_equal): Remove.
	* common/ptid.h (ptid_equal): Don't declare.
	* ada-tasks.c: Update.
	* breakpoint.c: Update.
	* common/agent.c: Update.
	* corelow.c: Update.
	* darwin-nat-info.c: Update.
	* darwin-nat.c: Update.
	* dcache.c: Update.
	* dtrace-probe.c: Update.
	* dummy-frame.c: Update.
	* fbsd-nat.c: Update.
	* frame.c: Update.
	* gdbthread.h: Update.
	* gnu-nat.c: Update.
	* go32-nat.c: Update.
	* inf-loop.c: Update.
	* inf-ptrace.c: Update.
	* infcall.c: Update.
	* infcmd.c: Update.
	* inflow.c: Update.
	* infrun.c: Update.
	* linux-fork.c: Update.
	* linux-nat.c: Update.
	* linux-thread-db.c: Update.
	* mi/mi-cmd-var.c: Update.
	* mi/mi-interp.c: Update.
	* mi/mi-main.c: Update.
	* nto-procfs.c: Update.
	* ppc-linux-tdep.c: Update.
	* procfs.c: Update.
	* python/py-inferior.c: Update.
	* python/py-record-btrace.c: Update.
	* python/py-record.c: Update.
	* ravenscar-thread.c: Update.
	* regcache.c: Update.
	* remote-sim.c: Update.
	* remote.c: Update.
	* sol-thread.c: Update.
	* solib.c: Update.
	* target.c: Update.
	* tui/tui-stack.c: Update.
	* varobj.c: Update.
	* windows-nat.c: Update.
	* windows-tdep.c: Update.

gdb/gdbserver/ChangeLog
2018-07-03  Tom Tromey  <tom@tromey.com>

	* linux-low.c: Update.
	* lynx-low.c: Update.
	* mem-break.c: Update.
	* nto-low.c: Update.
	* remote-utils.c: Update.
	* server.c: Update.
	* spu-low.c: Update.
	* target.c: Update.
	* win32-low.c: Update.
2018-07-03 11:36:46 -06:00
Tom Tromey e99b03dcf4 Remove ptid_get_pid
This removes ptid_get_pid in favor of calling the ptid_t::pid method.

gdb/ChangeLog
2018-07-03  Tom Tromey  <tom@tromey.com>

	* common/ptid.c (ptid_get_pid): Remove.
	* common/ptid.h (ptid_get_pid): Don't declare.
	* aarch64-linux-nat.c: Update.
	* ada-lang.c: Update.
	* aix-thread.c: Update.
	* alpha-bsd-nat.c: Update.
	* amd64-fbsd-nat.c: Update.
	* amd64-linux-nat.c: Update.
	* arm-linux-nat.c: Update.
	* arm-nbsd-nat.c: Update.
	* auxv.c: Update.
	* break-catch-syscall.c: Update.
	* breakpoint.c: Update.
	* bsd-uthread.c: Update.
	* corelow.c: Update.
	* ctf.c: Update.
	* darwin-nat.c: Update.
	* fbsd-nat.c: Update.
	* fbsd-tdep.c: Update.
	* gcore.c: Update.
	* gnu-nat.c: Update.
	* hppa-nbsd-nat.c: Update.
	* hppa-obsd-nat.c: Update.
	* i386-fbsd-nat.c: Update.
	* ia64-linux-nat.c: Update.
	* inf-ptrace.c: Update.
	* infcmd.c: Update.
	* inferior.c: Update.
	* inferior.h: Update.
	* inflow.c: Update.
	* infrun.c: Update.
	* linux-fork.c: Update.
	* linux-nat.c: Update.
	* linux-tdep.c: Update.
	* linux-thread-db.c: Update.
	* m68k-bsd-nat.c: Update.
	* mi/mi-interp.c: Update.
	* mi/mi-main.c: Update.
	* mips-linux-nat.c: Update.
	* mips-nbsd-nat.c: Update.
	* mips64-obsd-nat.c: Update.
	* nat/aarch64-linux-hw-point.c: Update.
	* nat/aarch64-linux.c: Update.
	* nat/linux-btrace.c: Update.
	* nat/linux-osdata.c: Update.
	* nat/linux-procfs.c: Update.
	* nat/x86-linux-dregs.c: Update.
	* nto-procfs.c: Update.
	* obsd-nat.c: Update.
	* ppc-linux-nat.c: Update.
	* ppc-nbsd-nat.c: Update.
	* ppc-obsd-nat.c: Update.
	* proc-service.c: Update.
	* procfs.c: Update.
	* python/py-inferior.c: Update.
	* python/py-infthread.c: Update.
	* ravenscar-thread.c: Update.
	* record.c: Update.
	* remote-sim.c: Update.
	* remote.c: Update.
	* rs6000-nat.c: Update.
	* s390-linux-nat.c: Update.
	* sh-nbsd-nat.c: Update.
	* sol-thread.c: Update.
	* sparc-nat.c: Update.
	* sparc64-tdep.c: Update.
	* spu-linux-nat.c: Update.
	* spu-tdep.c: Update.
	* target-debug.h: Update.
	* target.c: Update.
	* thread.c: Update.
	* tid-parse.c: Update.
	* tracefile-tfile.c: Update.
	* vax-bsd-nat.c: Update.
	* windows-nat.c: Update.
	* x86-linux-nat.c: Update.
	* x86-nat.c: Update.

gdb/gdbserver/ChangeLog
2018-07-03  Tom Tromey  <tom@tromey.com>

	* linux-low.c: Update.
	* linux-mips-low.c: Update.
	* lynx-low.c: Update.
	* mem-break.c: Update.
	* nto-low.c: Update.
	* remote-utils.c: Update.
	* server.c: Update.
	* spu-low.c: Update.
	* target.c: Update.
	* tracepoint.c: Update.
2018-07-03 11:36:42 -06:00
Tom Tromey f2907e4991 Remove pid_to_ptid
This removes pid_to_ptid in favor of calling the ptid_t constructor
directly.

gdb/ChangeLog
2018-07-03  Tom Tromey  <tom@tromey.com>

	* common/ptid.c (pid_to_ptid): Remove.
	* common/ptid.h (pid_to_ptid): Don't declare.
	* aix-thread.c: Update.
	* arm-linux-nat.c: Update.
	* common/ptid.c: Update.
	* common/ptid.h: Update.
	* corelow.c: Update.
	* ctf.c: Update.
	* darwin-nat.c: Update.
	* fbsd-nat.c: Update.
	* fork-child.c: Update.
	* gnu-nat.c: Update.
	* go32-nat.c: Update.
	* inf-ptrace.c: Update.
	* infcmd.c: Update.
	* inferior.c: Update.
	* infrun.c: Update.
	* linux-fork.c: Update.
	* linux-nat.c: Update.
	* nat/aarch64-linux-hw-point.c: Update.
	* nat/fork-inferior.c: Update.
	* nat/x86-linux-dregs.c: Update.
	* nto-procfs.c: Update.
	* obsd-nat.c: Update.
	* procfs.c: Update.
	* progspace.c: Update.
	* remote.c: Update.
	* rs6000-nat.c: Update.
	* s390-linux-nat.c: Update.
	* sol-thread.c: Update.
	* spu-linux-nat.c: Update.
	* target.c: Update.
	* top.c: Update.
	* tracefile-tfile.c: Update.
	* windows-nat.c: Update.

gdb/gdbserver/ChangeLog
2018-07-03  Tom Tromey  <tom@tromey.com>

	* linux-low.c: Update.
	* linux-ppc-low.c: Update.
	* linux-x86-low.c: Update.
	* proc-service.c: Update.
	* server.c: Update.
	* spu-low.c: Update.
	* thread-db.c: Update.
	* win32-low.c: Update.
2018-07-03 11:36:42 -06:00
Tom Tromey fd79271bd9 Remove ptid_build
This removes ptid_build in favor of simply calling the ptid_t
constructor directly.

gdb/ChangeLog
2018-07-03  Tom Tromey  <tom@tromey.com>

	* common/ptid.h (ptid_build): Don't declare.
	* common/ptid.c (ptid_build): Remove.
	* aix-thread.c: Update.
	* bsd-kvm.c: Update.
	* bsd-uthread.c: Update.
	* common/agent.c: Update.
	* common/ptid.c: Update.
	* common/ptid.h: Update.
	* corelow.c: Update.
	* darwin-nat.c: Update.
	* fbsd-nat.c: Update.
	* gnu-nat.c: Update.
	* linux-fork.c: Update.
	* linux-nat.c: Update.
	* linux-thread-db.c: Update.
	* nat/linux-osdata.c: Update.
	* nat/linux-procfs.c: Update.
	* nto-procfs.c: Update.
	* obsd-nat.c: Update.
	* proc-service.c: Update.
	* procfs.c: Update.
	* ravenscar-thread.c: Update.
	* remote-sim.c: Update.
	* remote.c: Update.
	* sol-thread.c: Update.
	* target.c: Update.
	* windows-nat.c: Update.

gdb/gdbserver/ChangeLog
2018-07-03  Tom Tromey  <tom@tromey.com>

	* linux-low.c: Update.
	* lynx-low.c: Update.
	* nto-low.c: Update.
	* remote-utils.c: Update.
	* spu-low.c: Update.
	* thread-db.c: Update.
	* win32-low.c: Update.
2018-07-03 11:36:41 -06:00
Pedro Alves f2ffa92bbc gdb: Eliminate the 'stop_pc' global
In my multi-target work, I need to add a few more
scoped_restore_current_thread and switch_to_thread calls in some
places, and in some lower-level places I was fighting against the fact
that switch_to_thread reads/refreshes the stop_pc global.

Instead of piling on workarounds, let's just finally eliminate the
stop_pc global.  We already have the per-thread
thread_info->suspend.stop_pc field, so it's mainly a matter of using
that more/instead.

gdb/ChangeLog:
2018-06-28  Pedro Alves  <palves@redhat.com>

	* gdbthread.h (struct thread_suspend_state) <stop_pc>: Extend
	comments.
	(switch_to_thread_no_regs): Adjust comment.
	* infcmd.c (stop_pc): Delete.
	(post_create_inferior, info_program_command): Replace references
	to stop_pc with references to thread_info->suspend.stop_pc.
	* inferior.h (stop_pc): Delete declaration.
	* infrun.c (proceed, handle_syscall_event, fill_in_stop_func)
	(handle_inferior_event_1, handle_signal_stop)
	(process_event_stop_test, keep_going_stepped_thread)
	(handle_step_into_function, handle_step_into_function_backward)
	(print_stop_location): Replace references to stop_pc with
	references to thread_info->suspend.stop_pc.
	(struct infcall_suspend_state) <stop_pc>: Delete field.
	(save_infcall_suspend_state, restore_infcall_suspend_state):
	Remove references to inf_stat->stop_pc.
	* linux-fork.c (fork_load_infrun_state): Likewise.
	* record-btrace.c (record_btrace_set_replay): Likewise.
	* record-full.c (record_full_goto_entry): Likewise.
	* remote.c (print_one_stopped_thread): Likewise.
	* target.c (target_resume): Extend comment.
	* thread.c (set_executing_thread): New.
	(set_executing): Use it.
	(switch_to_thread_no_regs, switch_to_no_thread, switch_to_thread):
	Remove references to stop_pc.
2018-06-28 17:12:07 +01:00
Pedro Alves 00431a78b2 Use thread_info and inferior pointers more throughout
This is more preparation bits for multi-target support.

In a multi-target scenario, we need to address the case of different
processes/threads running on different targets that happen to have the
same PID/PTID.  E.g., we can have both process 123 in target 1, and
process 123 in target 2, while they're in reality different processes
running on different machines.  Or maybe we've loaded multiple
instances of the same core file.  Etc.

To address this, in my WIP multi-target branch, threads and processes
are uniquely identified by the (process_stratum target_ops *, ptid_t)
and (process_stratum target_ops *, pid) tuples respectively.  I.e.,
each process_stratum instance has its own thread/process number space.

As you can imagine, that requires passing around target_ops * pointers
in a number of functions where we're currently passing only a ptid_t
or an int.  E.g., when we look up a thread_info object by ptid_t in
find_thread_ptid, the ptid_t alone isn't sufficient.

In many cases though, we already have the thread_info or inferior
pointer handy, but we "lose" it somewhere along the call stack, only
to look it up again by ptid_t/pid.  Since thread_info or inferior
objects know their parent target, if we pass around thread_info or
inferior pointers when possible, we avoid having to add extra
target_ops parameters to many functions, and also, we eliminate a
number of by ptid_t/int lookups.

So that's what this patch does.  In a bit more detail:

- Changes a number of functions and methods to take a thread_info or
  inferior pointer instead of a ptid_t or int parameter.

- Changes a number of structure fields from ptid_t/int to inferior or
  thread_info pointers.

- Uses the inferior_thread() function whenever possible instead of
  inferior_ptid.

- Uses thread_info pointers directly when possible instead of the
  is_running/is_stopped etc. routines that require a lookup.

- A number of functions are eliminated along the way, such as:

  int valid_gdb_inferior_id (int num);
  int pid_to_gdb_inferior_id (int pid);
  int gdb_inferior_id_to_pid (int num);
  int in_inferior_list (int pid);

- A few structures and places hold a thread_info pointer across
  inferior execution, so now they take a strong reference to the
  (refcounted) thread_info object to avoid the thread_info pointer
  getting stale.  This is done in enable_thread_stack_temporaries and
  in the infcall.c code.

- Related, there's a spot in infcall.c where using a RAII object to
  handle the refcount would be handy, so a gdb::ref_ptr specialization
  for thread_info is added (thread_info_ref, in gdbthread.h), along
  with a gdb_ref_ptr policy that works for all refcounted_object types
  (in common/refcounted-object.h).

gdb/ChangeLog:
2018-06-21  Pedro Alves  <palves@redhat.com>

	* ada-lang.h (ada_get_task_number): Take a thread_info pointer
	instead of a ptid_t.  All callers adjusted.
	* ada-tasks.c (ada_get_task_number): Likewise.  All callers
	adjusted.
	(print_ada_task_info, display_current_task_id, task_command_1):
	Adjust.
	* breakpoint.c (watchpoint_in_thread_scope): Adjust to use
	inferior_thread.
	(breakpoint_kind): Adjust.
	(remove_breakpoints_pid): Rename to ...
	(remove_breakpoints_inf): ... this.  Adjust to take an inferior
	pointer.  All callers adjusted.
	(bpstat_clear_actions): Use inferior_thread.
	(get_bpstat_thread): New.
	(bpstat_do_actions): Use it.
	(bpstat_check_breakpoint_conditions, bpstat_stop_status): Adjust
	to take a thread_info pointer.  All callers adjusted.
	(set_longjmp_breakpoint_for_call_dummy, set_momentary_breakpoint)
	(breakpoint_re_set_thread): Use inferior_thread.
	* breakpoint.h (struct inferior): Forward declare.
	(bpstat_stop_status): Update.
	(remove_breakpoints_pid): Delete.
	(remove_breakpoints_inf): New.
	* bsd-uthread.c (bsd_uthread_target::wait)
	(bsd_uthread_target::update_thread_list): Use find_thread_ptid.
	* btrace.c (btrace_add_pc, btrace_enable, btrace_fetch)
	(maint_btrace_packet_history_cmd)
	(maint_btrace_clear_packet_history_cmd): Adjust.
	(maint_btrace_clear_cmd, maint_info_btrace_cmd): Adjust to use
	inferior_thread.
	* cli/cli-interp.c: Include "inferior.h".
	* common/refcounted-object.h (struct
	refcounted_object_ref_policy): New.
	* compile/compile-object-load.c: Include gdbthread.h.
	(store_regs): Use inferior_thread.
	* corelow.c (core_target::close): Use current_inferior.
	(core_target_open): Adjust to use first_thread_of_inferior and use
	the current inferior.
	* ctf.c (ctf_target::close): Adjust to use current_inferior.
	* dummy-frame.c (dummy_frame_id) <ptid>: Delete, replaced by ...
	<thread>: ... this new field.  All references adjusted.
	(dummy_frame_pop, dummy_frame_discard, register_dummy_frame_dtor):
	Take a thread_info pointer instead of a ptid_t.
	* dummy-frame.h (dummy_frame_push, dummy_frame_pop)
	(dummy_frame_discard, register_dummy_frame_dtor): Take a
	thread_info pointer instead of a ptid_t.
	* elfread.c: Include "inferior.h".
	(elf_gnu_ifunc_resolver_stop, elf_gnu_ifunc_resolver_return_stop):
	Use inferior_thread.
	* eval.c (evaluate_subexp): Likewise.
	* frame.c (frame_pop, has_stack_frames, find_frame_sal): Use
	inferior_thread.
	* gdb_proc_service.h (struct thread_info): Forward declare.
	(struct ps_prochandle) <ptid>: Delete, replaced by ...
	<thread>: ... this new field.  All references adjusted.
	* gdbarch.h, gdbarch.c: Regenerate.
	* gdbarch.sh (get_syscall_number): Replace 'ptid' parameter with a
	'thread' parameter.  All implementations and callers adjusted.
	* gdbthread.h (thread_info) <set_running>: New method.
	(delete_thread, delete_thread_silent): Take a thread_info pointer
	instead of a ptid.
	(global_thread_id_to_ptid, ptid_to_global_thread_id): Delete.
	(first_thread_of_process): Delete, replaced by ...
	(first_thread_of_inferior): ... this new function.  All callers
	adjusted.
	(any_live_thread_of_process): Delete, replaced by ...
	(any_live_thread_of_inferior): ... this new function.  All callers
	adjusted.
	(switch_to_thread, switch_to_no_thread): Declare.
	(is_executing): Delete.
	(enable_thread_stack_temporaries): Update comment.
	<enable_thread_stack_temporaries>: Take a thread_info pointer
	instead of a ptid_t.  Incref the thread.
	<~enable_thread_stack_temporaries>: Decref the thread.
	<m_ptid>: Delete
	<m_thr>: New.
	(thread_stack_temporaries_enabled_p, push_thread_stack_temporary)
	(get_last_thread_stack_temporary)
	(value_in_thread_stack_temporaries, can_access_registers_thread):
	Take a thread_info pointer instead of a ptid_t.  All callers
	adjusted.
	* infcall.c (get_call_return_value): Use inferior_thread.
	(run_inferior_call): Work with thread pointers instead of ptid_t.
	(call_function_by_hand_dummy): Work with thread pointers instead
	of ptid_t.  Use thread_info_ref.
	* infcmd.c (proceed_thread_callback): Access thread's state
	directly.
	(ensure_valid_thread, ensure_not_running): Use inferior_thread,
	access thread's state directly.
	(continue_command): Use inferior_thread.
	(info_program_command): Use find_thread_ptid and access thread
	state directly.
	(proceed_after_attach_callback): Use thread state directly.
	(notice_new_inferior): Take a thread_info pointer instead of a
	ptid_t.  All callers adjusted.
	(exit_inferior): Take an inferior pointer instead of a pid.  All
	callers adjusted.
	(exit_inferior_silent): New.
	(detach_inferior): Delete.
	(valid_gdb_inferior_id, pid_to_gdb_inferior_id)
	(gdb_inferior_id_to_pid, in_inferior_list): Delete.
	(detach_inferior_command, kill_inferior_command): Use
	find_inferior_id instead of valid_gdb_inferior_id and
	gdb_inferior_id_to_pid.
	(inferior_command): Use inferior and thread pointers.
	* inferior.h (struct thread_info): Forward declare.
	(notice_new_inferior): Take a thread_info pointer instead of a
	ptid_t.  All callers adjusted.
	(detach_inferior): Delete declaration.
	(exit_inferior, exit_inferior_silent): Take an inferior pointer
	instead of a pid.  All callers adjusted.
	(gdb_inferior_id_to_pid, pid_to_gdb_inferior_id, in_inferior_list)
	(valid_gdb_inferior_id): Delete.
	* infrun.c (follow_fork_inferior, proceed_after_vfork_done)
	(handle_vfork_child_exec_or_exit, follow_exec): Adjust.
	(struct displaced_step_inferior_state) <pid>: Delete, replaced by
	...
	<inf>: ... this new field.
	<step_ptid>: Delete, replaced by ...
	<step_thread>: ... this new field.
	(get_displaced_stepping_state): Take an inferior pointer instead
	of a pid.  All callers adjusted.
	(displaced_step_in_progress_any_inferior): Adjust.
	(displaced_step_in_progress_thread): Take a thread pointer instead
	of a ptid_t.  All callers adjusted.
	(displaced_step_in_progress, add_displaced_stepping_state): Take
	an inferior pointer instead of a pid.  All callers adjusted.
	(get_displaced_step_closure_by_addr): Adjust.
	(remove_displaced_stepping_state): Take an inferior pointer
	instead of a pid.  All callers adjusted.
	(displaced_step_prepare_throw, displaced_step_prepare)
	(displaced_step_fixup): Take a thread pointer instead of a ptid_t.
	All callers adjusted.
	(start_step_over): Adjust.
	(infrun_thread_ptid_changed): Remove bit updating ptids in the
	displaced step queue.
	(do_target_resume): Adjust.
	(fetch_inferior_event): Use inferior_thread.
	(context_switch, get_inferior_stop_soon): Take an
	execution_control_state pointer instead of a ptid_t.  All callers
	adjusted.
	(switch_to_thread_cleanup): Delete.
	(stop_all_threads): Use scoped_restore_current_thread.
	* inline-frame.c: Include "gdbthread.h".
	(inline_state) <inline_state>: Take a thread pointer instead of a
	ptid_t.  All callers adjusted.
	<ptid>: Delete, replaced by ...
	<thread>: ... this new field.
	(find_inline_frame_state): Take a thread pointer instead of a
	ptid_t.  All callers adjusted.
	(skip_inline_frames, step_into_inline_frame)
	(inline_skipped_frames, inline_skipped_symbol): Take a thread
	pointer instead of a ptid_t.  All callers adjusted.
	* inline-frame.h (skip_inline_frames, step_into_inline_frame)
	(inline_skipped_frames, inline_skipped_symbol): Likewise.
	* linux-fork.c (delete_checkpoint_command): Adjust to use thread
	pointers directly.
	* linux-nat.c (get_detach_signal): Likewise.
	* linux-thread-db.c (thread_from_lwp): New 'stopped' parameter.
	(thread_db_notice_clone): Adjust.
	(thread_db_find_new_threads_silently)
	(thread_db_find_new_threads_2, thread_db_find_new_threads_1): Take
	a thread pointer instead of a ptid_t.  All callers adjusted.
	* mi/mi-cmd-var.c: Include "inferior.h".
	(mi_cmd_var_update_iter): Update to use thread pointers.
	* mi/mi-interp.c (mi_new_thread): Update to use the thread's
	inferior directly.
	(mi_output_running_pid, mi_inferior_count): Delete, bits factored
	out to ...
	(mi_output_running): ... this new function.
	(mi_on_resume_1): Adjust to use it.
	(mi_user_selected_context_changed): Adjust to use inferior_thread.
	* mi/mi-main.c (proceed_thread): Adjust to use thread pointers
	directly.
	(interrupt_thread_callback): : Adjust to use thread and inferior
	pointers.
	* proc-service.c: Include "gdbthread.h".
	(ps_pglobal_lookup): Adjust to use the thread's inferior directly.
	* progspace-and-thread.c: Include "inferior.h".
	* progspace.c: Include "inferior.h".
	* python/py-exitedevent.c (create_exited_event_object): Adjust to
	hold a reference to an inferior_object.
	* python/py-finishbreakpoint.c (bpfinishpy_init): Adjust to use
	inferior_thread.
	* python/py-inferior.c (struct inferior_object): Give the type a
	tag name instead of a typedef.
	(python_on_normal_stop): No need to check if the current thread is
	listed.
	(inferior_to_inferior_object): Change return type to
	inferior_object.  All callers adjusted.
	(find_thread_object): Delete, bits factored out to ...
	(thread_to_thread_object): ... this new function.
	* python/py-infthread.c (create_thread_object): Use
	inferior_to_inferior_object.
	(thpy_is_stopped): Use thread pointer directly.
	(gdbpy_selected_thread): Use inferior_thread.
	* python/py-record-btrace.c (btpy_list_object) <ptid>: Delete
	field, replaced with ...
	<thread>: ... this new field.  All users adjusted.
	(btpy_insn_or_gap_new): Drop const.
	(btpy_list_new): Take a thread pointer instead of a ptid_t.  All
	callers adjusted.
	* python/py-record.c: Include "gdbthread.h".
	(recpy_insn_new, recpy_func_new): Take a thread pointer instead of
	a ptid_t.  All callers adjusted.
	(gdbpy_current_recording): Use inferior_thread.
	* python/py-record.h (recpy_record_object) <ptid>: Delete
	field, replaced with ...
	<thread>: ... this new field.  All users adjusted.
	(recpy_element_object) <ptid>: Delete
	field, replaced with ...
	<thread>: ... this new field.  All users adjusted.
	(recpy_insn_new, recpy_func_new): Take a thread pointer instead of
	a ptid_t.  All callers adjusted.
	* python/py-threadevent.c: Include "gdbthread.h".
	(get_event_thread): Use thread_to_thread_object.
	* python/python-internal.h (struct inferior_object): Forward
	declare.
	(find_thread_object, find_inferior_object): Delete declarations.
	(thread_to_thread_object, inferior_to_inferior_object): New
	declarations.
	* record-btrace.c: Include "inferior.h".
	(require_btrace_thread): Use inferior_thread.
	(record_btrace_frame_sniffer)
	(record_btrace_tailcall_frame_sniffer): Use inferior_thread.
	(get_thread_current_frame): Use scoped_restore_current_thread and
	switch_to_thread.
	(get_thread_current_frame): Use thread pointer directly.
	(record_btrace_replay_at_breakpoint): Use thread's inferior
	pointer directly.
	* record-full.c: Include "inferior.h".
	* regcache.c: Include "gdbthread.h".
	(get_thread_arch_regcache): Use the inferior's address space
	directly.
	(get_thread_regcache, registers_changed_thread): New.
	* regcache.h (get_thread_regcache(thread_info *thread)): New
	overload.
	(registers_changed_thread): New.
	(remote_target) <remote_detach_1>: Swap order of parameters.
	(remote_add_thread): <remote_add_thread>: Return the new thread.
	(get_remote_thread_info(ptid_t)): New overload.
	(remote_target::remote_notice_new_inferior): Use thread pointers
	directly.
	(remote_target::process_initial_stop_replies): Use
	thread_info::set_running.
	(remote_target::remote_detach_1, remote_target::detach)
	(extended_remote_target::detach): Adjust.
	* stack.c (frame_show_address): Use inferior_thread.
	* target-debug.h (target_debug_print_thread_info_pp): New.
	* target-delegates.c: Regenerate.
	* target.c (default_thread_address_space): Delete.
	(memory_xfer_partial_1): Use current_inferior.
	(target_detach): Use current_inferior.
	(target_thread_address_space): Delete.
	(generic_mourn_inferior): Use current_inferior.
	* target.h (struct target_ops) <thread_address_space>: Delete.
	(target_thread_address_space): Delete.
	* thread.c (init_thread_list): Use ALL_THREADS_SAFE.  Use thread
	pointers directly.
	(delete_thread_1, delete_thread, delete_thread_silent): Take a
	thread pointer instead of a ptid_t.  Adjust all callers.
	(ptid_to_global_thread_id, global_thread_id_to_ptid): Delete.
	(first_thread_of_process): Delete, replaced by ...
	(first_thread_of_inferior): ... this new function.  All callers
	adjusted.
	(any_thread_of_process): Rename to ...
	(any_thread_of_inferior): ... this, and take an inferior pointer.
	(any_live_thread_of_process): Rename to ...
	(any_live_thread_of_inferior): ... this, and take an inferior
	pointer.
	(thread_stack_temporaries_enabled_p, push_thread_stack_temporary)
	(value_in_thread_stack_temporaries)
	(get_last_thread_stack_temporary): Take a thread pointer instead
	of a ptid_t.  Adjust all callers.
	(thread_info::set_running): New.
	(validate_registers_access): Use inferior_thread.
	(can_access_registers_ptid): Rename to ...
	(can_access_registers_thread): ... this, and take a thread
	pointer.
	(print_thread_info_1): Adjust to compare thread pointers instead
	of ptids.
	(switch_to_no_thread, switch_to_thread): Make extern.
	(scoped_restore_current_thread::~scoped_restore_current_thread):
	Use m_thread pointer directly.
	(scoped_restore_current_thread::scoped_restore_current_thread):
	Use inferior_thread.
	(thread_command): Use thread pointer directly.
	(thread_num_make_value_helper): Use inferior_thread.
	* top.c (execute_command): Use inferior_thread.
	* tui/tui-interp.c: Include "inferior.h".
	* varobj.c (varobj_create): Use inferior_thread.
	(value_of_root_1): Use find_thread_global_id instead of
	global_thread_id_to_ptid.
2018-06-21 17:09:31 +01:00
Pedro Alves a1740ee157 Introduce class target_stack
Currently, the target stack is represented by a singly linked list,
with target_ops having a pointer to the target beneath.  This poses a
problem for multi-process / multi-target debugging.  In that case, we
will naturally want multiple instances of target stacks.  E.g., one
stack for inferior 1 which is debugging a core file, and another
target stack for inferior 2 which is debugging a remote process.  The
problem then is in finding a target's "beneath" target, if we consider
that for some target_ops types, we'll be sharing a single target_ops
instance between several inferiors.  For example, so far, I found no
need to have multiple instances of the spu_multiarch_target /
exec_target / dummy_target targets.

Thus this patch, which changes the target stack representation to an
array of pointers.  For now, there's still a single global instance of
this new target_stack class, though further down in the multi-target
work, each inferior will have its own instance.

gdb/ChangeLog:
2018-06-07  Pedro Alves  <palves@redhat.com>

	* target.h (target_ops) <beneath>: Now a method.  All references
	updated.
	(class target_stack): New.
	* target.c (g_target_stack): New.
	(g_current_top_target): Delete.
	(current_top_target): Get the top target out of g_target_stack.
	(target_stack::push, target_stack::unpush): New.
	(push_target, unpush_target): Reimplement.
	(target_is_pushed): Reimplement in terms of g_target_stack.
	(target_ops::beneath, target_stack::find_beneath): New.
2018-06-07 18:58:04 +01:00
Pedro Alves d6ca69cddc Eliminate find_target_beneath
Call target_ops::beneath() throughout instead.

gdb/ChangeLog:
2018-06-07  Pedro Alves  <palves@redhat.com>

	* target.h (find_target_beneath): Delete declaration.
	* target.c (find_target_beneath): Delete definition.
	* aix-thread.c: All callers of find_target_beneath adjusted to
	call target_ops::beneath instead.
	* bsd-uthread.c: Likewise.
	* linux-thread-db.c: Likewise.
	* ravenscar-thread.c: Likewise.
	* sol-thread.c: Likewise.
	* spu-multiarch.c: Likewise.
2018-06-07 18:57:37 +01:00
Pedro Alves b6a8c27bb8 target_ops::beneath -> target_ops::beneath()
This changes target_ops::beneath from a pointer to a method, and
adjusts all references throughout.  The idea here is to make it easier
to change the target stack representation from an intrusive singly
linked list to something else without leaking implementation details
throughout.

The commit does not change the representation yet, that will be done
in a following patch.  That is why a new target_ops::m_beneath field
appears here.  That new field isn't really documented properly or made
private, simply because it will be removed shortly.

Note that target_ops::beneath() is essentially the same as the current
find_target_beneath routine.  The following patch will eliminate the
latter.

gdb/ChangeLog:
2018-06-07  Pedro Alves  <palves@redhat.com>

	* target.h (target_ops) <beneath>: Now a method.  All references
	updated.
	(target_ops) <m_beneath>: New.
	* target.c (target_ops::beneath): New.
	* corelow.c: Adjust all references to target_ops::beneath.
	* linux-thread-db.c: Likewise.
	* make-target-delegates: Likewise.
	* record-btrace.c: Likewise.
	* record-full.c: Likewise.
	* remote.c: Likewise.
	* target.c: Likewise.
	* target-delegates.c: Regenerate.
2018-06-07 18:57:06 +01:00